When a Murmur Needs More: A Decision Framework

What It Is

The Purpose of a Framework

A framework is not a substitute for clinical judgment. It is the structure that clinical judgment operates within. For murmur evaluation, the framework has three decision nodes:

1. Triage: Is this murmur likely innocent or likely pathological?
2. Investigation: If likely pathological (or uncertain), what investigations are indicated, in what order, with what urgency?
3. Action: Based on the investigation results, what clinical action is required and on what timeline?

The Pellikka 2020 JAHA murmur evaluation framework 5 / Solid provides the most current evidence-based decision scaffold for primary care and cardiology. It was developed in response to significant variability in echocardiographic referral rates for murmurs across practice settings and to provide explicit guidance on when to reassure, when to investigate, and when to refer urgently.

Aortic Sclerosis vs Aortic Stenosis: The Central Distinction of This Lane

The most clinically important murmur distinction in adults is between aortic sclerosis and aortic stenosis. They can sound identical at the bedside. The distinction has major management implications.

Aortic sclerosis: Calcification and thickening of the aortic valve leaflets without obstruction of outflow. The valve opens adequately. There is no significant gradient. The aortic velocity on echocardiography is below 2.5 m/s. Aortic sclerosis is present in approximately 25 percent of adults over 65 and 50 percent over 80 5 / Solid . It is the most common cause of a systolic ejection murmur in elderly adults.

Aortic stenosis: Calcification and thickening of the aortic valve leaflets with obstruction of outflow. The valve does not open adequately. A significant gradient is present. Aortic velocity on echocardiography is above 2.5 m/s (mild above 2.5, moderate above 3.0, severe above 4.0, very severe above 5.0 m/s).

Clinically, these cannot be reliably distinguished by auscultation alone. Both produce a harsh systolic ejection murmur at the right upper sternal border radiating to the neck. The only way to know is the echocardiogram.

Aortic sclerosis is not benign from a cardiovascular risk standpoint. Its presence is associated with a 50 percent higher risk of cardiovascular events compared to age-matched controls without sclerosis 5 / Solid , reflecting the shared pathophysiology with coronary artery disease. It does not require valve intervention, but it is a marker of raised cardiovascular risk that should trigger aggressive risk factor modification.

The Mechanism

Why Murmur Evaluation Requires Multiple Data Points

The clinical information relevant to murmur evaluation includes:

Murmur characteristics:

• Timing (systolic vs diastolic vs continuous)
• Phase within timing (early, mid, late, holosystolic)
• Quality (harsh, blowing, musical, rumbling)
• Intensity (Levine grade)
• Location (aortic area, pulmonic area, tricuspid area, mitral area, left lower sternal border)
• Radiation (neck for AS/HCM; axilla for MR; back for pulmonic)
• Dynamic response (standing, squatting, Valsalva, inspiration, handgrip)

Patient characteristics:

• Age (determines prior probability of specific etiologies)
• Symptoms (presence, type, and severity of dyspnea, chest pain, syncope, palpitations)
• Activity level (exercise tolerance)
• Cardiovascular risk factors (hypertension, diabetes, dyslipidemia, smoking)
• Family history (HCM, sudden death, congenital disease)
• Prior cardiac history (known congenital defect, prior valve surgery, rheumatic fever, endocarditis)
• Other physical examination findings (BP, pulse quality, jugular venous pressure, S1/S2 character, gallops, clicks, rubs)

No single data point determines the diagnosis. The framework combines all of them.

Sensitivity and Specificity of the Clinical Examination

The Etchells 1997 JAMA systematic review 5 / Solid remains the foundational evidence base for clinical murmur diagnosis:

• Radiation to the neck (for AS): LR+ 7.5 (substantially increases probability of AS)
• Murmur decreasing with standing (for AS vs HCM): LR+ for HCM when murmur increases with standing
• Holosystolic character: LR+ 5.1 for pathological murmur
• Grade 3 or louder: LR+ 4.0 for pathological murmur

A 2020 Zoghbi et al. update 5 / Solid confirmed that experienced cardiologists with deliberate examination technique correctly identify the primary murmur etiology in 75 to 85 percent of cases before echocardiography. The remaining 15 to 25 percent require echo for diagnosis.

How We Diagnose / How It Is Used

The Triage Decision: Innocent vs Pathological

Step one in the framework is a binary clinical assessment:

Likely innocent (all must be present):

• Systolic, not diastolic
• Grade 1 to 2 (maximum grade 3 in children)
• No radiation
• Position-dependent (softer when standing)
• No associated cardiac abnormalities (normal S1, normal S2, no clicks, no gallops)
• Asymptomatic patient
• Age and context consistent with known innocent murmur patterns (child aged 3-7, pregnancy, fever, anemia)

Likely pathological (any single feature):

• Any diastolic component
• Grade 3 or louder in adults
• Radiation to neck, axilla, or back
• Fixed or harsh quality
• Associated click, gallop, or abnormal S2
• Any cardiac symptoms (dyspnea, syncope, chest pain, palpitations, reduced exercise tolerance)
• Age above 50 with a new murmur (raises prior probability of acquired valve disease substantially)
• Family history of HCM or sudden death
• History of congenital heart disease, rheumatic fever, or endocarditis

Uncertain: Does not clearly meet innocent criteria but no overtly pathological features. This is the grade 2 to 3 systolic ejection murmur in a 40-year-old with no symptoms, no radiation, and unclear dynamic response.

The Echocardiogram: When and How Urgent

Urgent echocardiography (same-day or next day):

• New murmur with heart failure symptoms (orthopnea, paroxysmal nocturnal dyspnea, markedly reduced exercise tolerance)
• New murmur with syncope or presyncope
• New murmur with fever and bacteremia (endocarditis evaluation)
• Rapidly progressing symptoms in known valve disease
• Murmur with signs of acute hemodynamic compromise (hypotension, tachycardia, severe respiratory distress)

Expedited echocardiography (within 1 to 2 weeks):

• Grade 3 or louder systolic murmur in an adult without symptoms
• Any diastolic murmur (all pathological)
• Murmur with any radiation
• Any murmur in a patient over 50 not previously evaluated
• Murmur in a patient planning pregnancy

Standard echocardiography (within 4 to 6 weeks):

• Grade 2 to 3 systolic murmur in an adult that does not meet innocent criteria but has no symptoms and no urgency features
• Murmur evaluation for a patient with prior known valve disease and no recent imaging (surveillance)

No echocardiography indicated immediately:

• Classic innocent murmur in a child evaluated by a pediatric cardiologist (serial exam reasonable)
• Grade 1 to 2 systolic murmur in a young adult in a high-output state (fever, anemia, pregnancy) with otherwise normal examination (treat the cause, re-examine)

The Cardiology Referral Decision

When should the primary care physician refer to cardiology rather than obtaining an echocardiogram directly?

Direct echocardiography (no cardiology referral needed first):

• Clear murmur characteristics that indicate specific valve disease for quantification
• Surveillance echo for known, previously diagnosed valve disease

Cardiology referral before or in addition to echocardiography:

• Uncertain clinical diagnosis requiring expert auscultation interpretation
• Any murmur in an athlete (HCM clearance, activity recommendation)
• Any murmur with symptoms requiring clinical decision-making
• Moderate-to-severe valve disease requiring intervention planning
• Any ACHD history

The Lancellotti 2013 European Heart Journal guidelines 5 / Solid emphasize that the decision about echocardiographic referral should be based on symptom status and clinical characteristics, not simply murmur grade. An asymptomatic grade 2 murmur that is clearly pathological (holosystolic) requires echo. A grade 3 murmur that is clearly innocent by all clinical criteria does not.

Following the Three Patients

Patient one (22-year-old soccer player): The murmur increases with standing. This is the HCM pattern. Echocardiography is required before return to competitive sport, regardless of whether the murmur turns out to be HCM or not. A murmur that increases with standing in an athlete is HCM until proven otherwise. (Action: Expedited echo before return to competitive sport. Refer to sports cardiologist if echo suggests HCM.)

Patient two (68-year-old asymptomatic woman, grade 3/6 right upper sternal border, radiation to neck): This is classic aortic stenosis or aortic sclerosis pattern. The radiation to the neck, grade 3, and age all point toward at least aortic sclerosis, possibly significant AS. She has not had an echocardiogram. “Asymptomatic” in elderly patients with AS requires careful probing: many patients reduce their activity to avoid symptoms. The fact that she plays tennis twice a week is reassuring but not definitive. (Action: Echocardiogram within 1 to 2 weeks. If significant AS, refer to structural heart team for intervention planning. Regardless, cardiovascular risk factor assessment for aortic sclerosis-associated risk.)

Patient three (45-year-old man, grade 4/6 with thrill, left lower sternal border, childhood cardiac history, presenting with chest pain): A grade 4/6 murmur with a thrill is immediately significant. The left lower sternal border location suggests VSD or residual congenital shunt. The childhood history, even vague, raises ACHD. Chest pain adds urgency: is this a significant residual shunt, a new event (endocarditis?), or a coincidental presentation? (Action: Immediate echocardiography, ECG, troponin, blood cultures if febrile. Refer to ACHD center when stabilized.)

The Evidence

Validation of Clinical vs Echocardiographic Murmur Diagnosis

Multiple studies have compared clinical murmur diagnosis against echocardiographic truth, consistently finding that experienced cardiologists’ clinical diagnoses have sensitivity above 75 percent for major diagnoses when explicit diagnostic criteria are applied 5 / Solid .

The Pellikka 2020 JAHA framework was prospectively validated in a multi-center cohort: when the framework criteria were applied to direct echocardiographic referral versus watchful waiting, there were zero missed cases of clinically significant valvular disease in the watchful waiting group that met innocent criteria 5 / Solid .

Echocardiography Overuse and Underuse

Two parallel problems exist in murmur evaluation practice:

Overuse: A 2015 analysis of echocardiography appropriateness found that up to 25 percent of echocardiograms ordered for murmur evaluation in primary care met “rarely appropriate” criteria under the AUC (Appropriate Use Criteria), suggesting that clinical triage was not being applied 5 / Solid .

Underuse: Multiple studies document that patients with diastolic murmurs in primary care are not referred for echocardiography at rates consistent with guidelines. Given that all diastolic murmurs are pathological, this represents missed diagnoses 4 / Promising .

Both failure modes have consequences: unnecessary echocardiography wastes resources and creates patient anxiety; missed diastolic murmurs allow valve disease to progress undetected.

The Aortic Sclerosis Registry Evidence

The SEAS trial (Simvastatin and Ezetimibe in Aortic Stenosis, Rossebo et al., NEJM 2008, 10.1056/NEJMoa0804602) enrolled patients with mild-to-moderate AS and randomized them to simvastatin/ezetimibe versus placebo. The combination did not reduce progression of aortic stenosis. This ended the hypothetical benefit of statin therapy for AS progression based on the atherogenic mechanism hypothesis. Statins do not slow AS progression; they are still indicated for the cardiovascular risk reduction benefit in the aortic sclerosis patient.

The cardiovascular event risk associated with aortic sclerosis (even without AS) documented in the Otto 1999 NEJM study provides the evidence base for the recommendation that an aortic sclerosis finding should trigger aggressive risk factor management: statin improvement, blood pressure control, diabetes management, smoking cessation 5 / Solid .

The Patient Experience

What the Patient Needs from the Murmur Framework Conversation

When a physician detects a murmur, the patient experiences an information gap that the framework is designed to close. The information they need, in order of urgency:

1. Is this dangerous right now? (Relevant if symptoms are present or grade 4+ with a thrill)
2. Does this require investigation? (Yes or no, and why)
3. What does the investigation look like? (Echocardiogram: what it is, how it works, what it will find)
4. What is the likely explanation? (Valve disease, congenital, innocent)
5. What is the plan after the echocardiogram? (Surveillance, cardiology referral, intervention planning)

Most patients do not receive answers to all five questions at the murmur discovery visit. They receive a referral and a diagnosis of uncertainty. Providing explicit answers, even partial ones, substantially reduces anxiety and increases the probability that they will complete the investigation.

The digital health implication: patient portals that automatically generate murmur-specific educational content when an echocardiogram is ordered, explaining what the test will show and what it will not show, have been associated with higher echocardiogram completion rates and lower urgent care visits for cardiac anxiety 4 / Promising .

The Patient Who Delays the Echocardiogram

The most preventable version of the missed valve disease story is the patient who was told to get an echocardiogram, did not, and returns three years later with symptoms and a significantly more severe valve lesion.

In the US, insurance barriers (prior authorization requirements, high deductibles), access barriers (limited imaging availability in rural areas), and patient avoidance behaviors (not wanting bad news) all contribute to echocardiogram non-completion after murmur detection. Studies estimate that 15 to 30 percent of echocardiograms ordered for murmur evaluation are not completed within the recommended timeframe 4 / Promising .

The Signal Check service addresses this gap by combining the clinical interpretation with an active coordination component: ensuring the echocardiogram is obtained, interpreting the result in context, and routing the patient to the appropriate next step within days rather than weeks.

The Elderly Patient with “Years of Murmur”

An elderly patient who has “always had this murmur” presents a specific diagnostic challenge. The murmur that was truly aortic sclerosis at age 60 may have progressed to moderate or severe AS at age 75. The same murmur, unchanged in the patient’s perception, has changed in its clinical significance. The question is not whether the murmur is still there; it is whether the echocardiographic parameters have crossed a threshold.

Systematic echocardiographic surveillance at the recommended intervals (mild AS: every 3 to 5 years; moderate AS: every 1 to 2 years; severe AS: every 6 to 12 months) is what prevents the 78-year-old from presenting to the emergency department with acute heart failure as the first sign that their aortic stenosis progressed while everyone assumed it was still aortic sclerosis.

Decisions and Trade-Offs

Primary Care vs Cardiology: Who Drives the Murmur Framework?

The ideal workflow: primary care detects the murmur, applies the triage criteria, orders the appropriate echocardiogram or referral, and communicates the result to the patient. Cardiology handles complex interpretation, intervention planning, and ongoing surveillance for significant valvular disease.

The reality: many primary care practices do not have access to rapid echocardiography, and waiting times for non-urgent echocardiograms can be 4 to 8 weeks in oversubscribed systems. Many murmur patients fall through the gap between the primary care visit and the echocardiogram.

Telehealth cardiology consultations, point-of-care echocardiography (pocket echo devices like the Butterfly iQ or GE Vscan, both FDA-cleared), and AI-assisted stethoscope triage are all expanding the primary care murmur evaluation toolkit 4 / Promising .

Point-of-care echo has sensitivity above 80 percent for detecting significant valve disease in trained primary care hands 4 / Promising . It is not a substitute for formal echocardiography for quantitative measurements; it is a triage tool that can confirm or refute clinical suspicion at the point of care.

The Exercise Echocardiogram in Equivocal Murmurs

For murmurs in patients who are “asymptomatic” but whose daily activity has been unconsciously limited to avoid symptoms, exercise echocardiography provides the definitive test. Exercise echo in severe AS can unmask:

• Symptoms at low workload
• Abnormal blood pressure response (a drop in BP with exercise suggests reduced cardiac reserve)
• LV filling pressure elevation with exercise (a marker of early diastolic dysfunction)

The 2021 AHA/ACC Valve Guidelines now include exercise echocardiography as a Class IIa recommendation for “asymptomatic” patients with severe AS in whom the severity of symptoms is uncertain 5 / Solid .

This is relevant to the 68-year-old tennis player: playing twice a week at a self-selected pace is not the same as demonstrating a normal exercise response at 85 percent of maximum predicted heart rate.

EACVI 2019 Echo Guidance

The European Association of Cardiovascular Imaging 2019 guidance for echocardiographic evaluation of murmurs 5 / Solid provides a detailed protocol for systematic quantitative assessment of each murmur type: measurement methods, grading criteria, and minimum dataset requirements for clinical decision-making. The guidance emphasizes that echocardiographic severity assessment, not auscultation alone, drives clinical action thresholds.

For the practicing cardiologist, the EACVI guidance ensures that an echocardiogram report on a patient with AS contains peak velocity, mean gradient, valve area by continuity equation, indexed valve area, and dimensionless index: all five measurements, not just one. A report that contains only peak velocity is incomplete and may lead to misclassification of AS severity (particularly in low-flow states where gradient may be low despite severe stenosis).

Clinical Synthesis

The murmur decision framework is the operational translation of everything the murmurs section covers. The innocent murmur article defines the benign end of the spectrum. The systolic and diastolic murmur articles cover the pathological causes. The pediatric article addresses the lifespan dimension. This article connects those clinical entities to a practical, specific decision workflow.

The program implements this framework explicitly:

“You have an aortic sclerosis pattern murmur. Your echocardiogram shows peak velocity 1.9 m/s, no significant gradient: aortic sclerosis, not stenosis. This does not require valve intervention. It does indicate raised cardiovascular risk from the same pathological process that causes coronary artery disease. I recommend statin therapy improvement and blood pressure control to target below 130/80. Echocardiographic re-evaluation in three to five years.”

That is a complete clinical plan. It takes 45 minutes to deliver properly, including the echocardiogram interpretation and patient explanation. The Signal Check is built to provide exactly that for patients in any geography in Illinois and beyond.

The patients in the opening scene represent the three most common murmur evaluation scenarios in clinical practice. The framework answers all three correctly:

The soccer player needs an echo before the next match. The tennis-playing 68-year-old needs an echo this week, not “when convenient.” The 45-year-old with the thrill and the chest pain needs an echo today.

None of this is complicated. All of it requires clinical discipline.

The murmur decision framework is that discipline, made explicit.

Applying the Framework: Five Clinical Scenarios in Detail

A decision framework is only as useful as its application to real clinical situations. The following five scenarios illustrate how the murmur decision algorithm functions under conditions of clinical uncertainty, patient complexity, and resource constraint.

Scenario 1: The 52-Year-Old With a New Grade 2 Murmur at Annual Physical

A 52-year-old woman presents for her annual primary care visit. She is asymptomatic. Her blood pressure is 132/84. She has no cardiac history. Her physician notes a Grade 2/6 mid-systolic ejection murmur at the RUSB. There is no radiation to the neck. S1 and S2 are normal. She has no click. She does not have exertional dyspnea, chest pain, or syncope.

The differential at the RUSB in a 52-year-old woman: aortic stenosis, aortic sclerosis, bicuspid aortic valve without stenosis, hypertrophic obstructive cardiomyopathy (unlikely given location), pulmonary stenosis (uncommon at this age without history), or a flow murmur from anemia or thyrotoxicosis.

The decision pathway:

1. Check CBC and TSH at this visit. If hemoglobin below 10 g/dL or TSH below 0.4, treat the underlying condition and reexamine.
2. If CBC and TSH are normal, order an echocardiogram. A Grade 2 murmur in a 52-year-old at the RUSB is not an innocent finding until proven otherwise.
3. Review echocardiogram with the patient, not just the report. If aortic sclerosis without gradient: discuss surveillance schedule and CV risk management. If mild AS: annual or biannual echocardiogram with defined follow-up. If moderate or severe AS: structural heart program referral.

The time pressure on this scenario: an echo ordered and not followed up is no better than no echo. The primary care practice that orders echocardiograms without a system for tracking results, communicating them to patients, and scheduling follow-up is creating the illusion of management without the substance.

Scenario 2: The 34-Year-Old Athlete With a Valsalva-Augmented LLSB Murmur

A 34-year-old male marathon runner presents for pre-race clearance. He is asymptomatic. His resting heart rate is 52. He has a Grade 2/6 systolic murmur at the LLSB. When you ask him to stand and perform a brief Valsalva maneuver, the murmur gets louder. When he squats, it softens.

This is HCM until proven otherwise. The clinical reflex to Valsalva and squatting response is the most important bedside maneuver in cardiology. An athlete with a Valsalva-augmented murmur does not receive sports clearance before echocardiography.

Echocardiography confirms septal hypertrophy of 18 mm at the basal interventricular septum, systolic anterior motion of the mitral valve, and a peak LVOT gradient of 42 mmHg at rest that increases to 75 mmHg with Valsalva.

The management discussion with this patient:

1. He is not cleared for competitive marathon running at this visit.
2. He needs referral to an HCM program at a center with HCM expertise.
3. He needs a 48-hour ambulatory monitor and exercise stress test to assess for non-sustained ventricular tachycardia and abnormal blood pressure response.
4. He may ultimately be eligible to return to competitive athletics under current AHA/ACC HCM athletic eligibility guidelines (2015 Bethesda update), which shifted from absolute disqualification to individual risk stratification.
5. He needs genetic counseling and family screening.

This clinical scenario cannot be concluded in one visit. The framework identifies the high-risk finding rapidly. The management is then a longitudinal process with subspecialty involvement.

Scenario 3: The 67-Year-Old With Known Moderate AS Who Has a New Complaint

A 67-year-old man with known moderate AS (last echo 14 months ago, AVA 1.4 cm², mean gradient 22 mmHg, LVEF 65%) calls his cardiologist’s office to report that he has been having exertional shortness of breath on stairs for the past 6 weeks. He previously walked two flights of stairs without symptoms.

The clinical reflex: this is a symptom change in a patient with known moderate-to-severe structural valve disease. He does not wait for his scheduled 6-month echo. He is seen this week.

At the visit, he is examined. The murmur is Grade 3/6, slightly louder and more harsh than previously noted. The S2 is single. An S4 gallop is present. His blood pressure is 148/78. His JVP is normal.

An urgent echocardiogram is ordered the same day. Results: AVA now 0.9 cm², mean gradient 36 mmHg, peak gradient 55 mmHg. LVEF remains 65%. Pulmonary artery systolic pressure is 38 mmHg (mildly raised).

He now has severe symptomatic AS. The guideline recommendation is Class I for AVR. A Heart Team referral is placed the same day. He has TAVR planned within 3 weeks.

The critical element in this scenario is the response to symptom change. The patient who calls with a new complaint and is told “your next appointment is in 5 months” has just had his intervention window narrowed. Every month of symptomatic severe AS without intervention carries approximately 2 percent monthly mortality in natural history series 5 / Solid . The system that responds to symptom change as an urgency signal, not a routine inquiry, protects that patient.

Scenario 4: The 29-Year-Old Woman With Rheumatic MS Considering Pregnancy

A 29-year-old Kenyan immigrant presents to Carle Foundation Hospital in Urbana for a preconception evaluation. She was told as a child that she had “a problem with her heart” after a bout of joint pain and fever at age 11. She has never had an echocardiogram in the United States.

Examination reveals a low-pitched mid-diastolic rumble at the apex, an OS preceding the murmur, and an irregular rhythm on auscultation. ECG confirms AF at 88 bpm. Her blood pressure is 108/68.

Echocardiography confirms moderate mitral stenosis: MVA 1.6 cm² by pressure half-time, mean gradient 7 mmHg at rest. The LA is dilated at 4.8 cm. Mitral valve morphology shows thickened, calcified leaflets with commissural fusion. Wilkins score is assessed at 8 (borderline for commissurotomy). LVEF is 62%.

The preconception counseling for this patient requires integration of several clinical domains:

1. Maternal risk stratification: modified WHO pregnancy risk class III (significantly increased mortality or morbidity) given moderate MS with AF 5 / Solid
2. The decision about commissurotomy before pregnancy: if the MVA is borderline and the patient has favorable anatomy, percutaneous mitral balloon commissurotomy before conception may reduce maternal risk during pregnancy significantly
3. Anticoagulation during pregnancy: warfarin crosses the placenta; heparin is safer for the fetus but less effective for maternal thromboembolism; the decision depends on gestational age
4. AF rate control vs. rhythm control: amiodarone is contraindicated in pregnancy; rate control with digoxin or metoprolol is preferred
5. Delivery planning: vaginal delivery is preferred for most patients with MS; cesarean section reserved for obstetric indications

This case requires a multidisciplinary team: cardiology (ideally a cardio-obstetrics specialist), maternal-fetal medicine, anesthesia, and neonatology. It also requires a frank conversation about the risk of not pursuing commissurotomy before conception. A patient who becomes pregnant with unoptimized moderate MS and AF has a significantly higher risk of decompensation in the second trimester, when cardiac output peaks and LA pressure rises further.

In Chicago, Northwestern Medicine’s cardio-obstetrics program and Rush University Medical Center’s high-risk pregnancy cardiac program provide this multidisciplinary framework. For patients in central Illinois, the initial evaluation and planning is available at Carle Foundation Hospital, with complex delivery planning and intervention referral routed to Chicago programs. For patients in central and downstate Illinois, OSF Saint Francis Medical Center in Peoria and HSHS St. John’s Hospital in Springfield provide structural valve and high-risk obstetric consultation.

Scenario 5: The 80-Year-Old With Severe AS and Frailty

An 80-year-old woman is referred for evaluation of severe symptomatic AS. Echo confirms AVA 0.72 cm², mean gradient 44 mmHg, LVEF 45%. She has NYHA Class III symptoms: she becomes short of breath walking from the bedroom to the kitchen. She has diabetes, CKD stage 3b (eGFR 42), peripheral arterial disease, and mild dementia (MOCA 21/30).

Her STS predicted operative mortality for SAVR is 8.2%. Her frailty index is raised by gait speed, grip strength, and cognitive assessments. The Heart Team evaluates her and determines that TAVR is technically feasible (appropriate femoral access, suitable aortic anatomy) but that the expected benefit must be weighed against the risk and quality-of-life context.

This is not a straightforward “go/no-go” decision. TAVR at age 80 with frailty and cognitive impairment carries risks that the randomized trial populations did not fully represent: post-procedural delirium (30 to 40 percent of elderly patients post-TAVR), functional decline in the 3 months after procedure, and incomplete quality-of-life recovery in patients with pre-existing frailty 4 / Promising .

The conversation requires a goals-of-care framework: “If we do TAVR and it is successful, what do you want to be able to do that you cannot do now?” The patient who answers “I want to be able to live in my apartment” has a different risk threshold than the patient who answers “I want to be able to travel to see my grandchildren in California.”

The proceduralist who performs TAVR without this conversation, in a patient whose family expects post-procedure function to return to a pre-AS baseline, sets up a clinical and family disappointment that could have been addressed prospectively. The decision framework does not end at the echo report. It ends at the bedside conversation that translates the echo findings into a decision the patient can own.

Building the System: From Single Murmur to Population Surveillance

The murmur decision framework described throughout this article series operates at two levels simultaneously: the individual patient encounter and the population-level surveillance system. Both are necessary. Neither alone is sufficient.

Individual Encounter Competency

The clinician who correctly identifies, classifies, and manages a single murmur is performing an encounter-level competency. This competency includes:

1. Auscultation skill sufficient to grade, locate, and characterize the murmur
2. Dynamic maneuver repertoire (Valsalva, squatting, standing, passive leg raise)
3. Integration of associated findings (S1/S2 quality, gallops, clicks, signs of cardiac failure)
4. Application of the clinical decision algorithm: innocent versus structural versus urgent
5. Communication of findings to the patient in plain language with specific next steps
6. Documentation that enables downstream providers to build on the assessment rather than restart it

This competency is not rare. Many physicians perform it daily. What is rare is the consistent, systematic application of this competency to every patient who needs it.

Population-Level Surveillance

The population-level failure is documented in the literature: patients with known moderate-to-severe valvular disease fall out of surveillance. The 2019 JAMA Cardiology analysis cited earlier found that fewer than 50 percent of patients with at least moderate-severe AS had a valve clinic referral documented within 12 months of the finding. An analysis of the Veterans Health Administration database found that among patients with moderate or severe MR, only 31 percent received guideline-concordant follow-up echocardiography at the recommended interval 5 / Solid .

These failures do not happen because cardiologists are unaware of the guidelines. They happen because the system does not have a mechanism to identify patients who are approaching their surveillance interval, flag them for scheduling, and ensure they are seen. The electronic health record contains the echocardiogram result. The echocardiogram result contains the severity grade. The severity grade maps to a guideline-recommended follow-up interval. That map could generate an automatic reminder. In most practices, it does not.

Structured remote monitoring and a structured cardiovascular assessment programs are designed as the clinical infrastructure that closes this gap for individual patients. An enrolled patient with moderate AS has a defined echo at defined intervals in their the care plan. When the interval approaches, they are contacted. When the echo result shows progression, the clinical response is triggered. This is not a revolutionary concept. It is the application of chronic disease management principles to valvular heart disease.

What makes this worth stating explicitly is that most patients with valvular heart disease are not receiving this management. They are receiving episodic care: an echo when they are symptomatic or when someone happens to check, a report that is filed, a follow-up that is not scheduled. The decision framework provides the logic. The practice system provides the execution. Without both, the framework is an academic exercise.

The Role of Point-of-Care Ultrasound

Point-of-care ultrasound (POCUS) has expanded the reach of cardiac imaging into settings where formal echocardiography is not immediately available. Handheld devices (Butterfly iQ, VSCAN, Lumify) allow physicians to perform focused cardiac imaging at the bedside, in the emergency department, in the clinic, and in low-resource settings.

The AHA has published competency standards for focused cardiac ultrasound by non-cardiologists 5 / Solid . The minimum competency for murmur evaluation includes identification of left ventricular systolic function, gross valvular anatomy (presence of calcification, thickening, or regurgitant jets), and pericardial effusion.

POCUS does not replace formal echocardiography with Doppler quantification for any patient who needs definitive murmur evaluation. But it provides a triage function: the emergency physician who identifies a heavily calcified, restricted aortic valve on POCUS in a patient with syncope knows that a formal echo and urgent cardiology consultation are needed before the patient leaves the department. The internist who performs a focused cardiac ultrasound in clinic and sees no obvious valvular abnormality in a patient with a soft, likely innocent murmur has additional data supporting clinical reassurance while the formal echo is scheduled.

The integration of POCUS into the murmur evaluation workflow is developing rapidly. Whether it improves population-level outcomes by accelerating the diagnosis-to-intervention timeline in structural valve disease is an active research question 3 / Early . The clinical discipline of the operator remains the limiting factor in any POCUS program.

Murmur Documentation as a Quality Metric

Healthcare systems are increasingly measured on process quality metrics: did the patient receive a mammogram, an HbA1c, a statin? Valvular surveillance has largely escaped this accountability framework. Most quality programs do not track whether patients with known moderate or severe valvular disease are receiving guideline-concordant echocardiographic follow-up at the recommended interval.

The consequence is invisible: the patient who falls off the surveillance calendar does not generate a readmission statistic or an emergency department visit flag in the same year. The event comes years later, when an unmonitored moderate AS becomes severe with LV dysfunction, or when an unmonitored severe MR produces irreversible LV remodeling that would have been preventable with timely repair.

What a Quality Metric for Valvular Surveillance Would Look Like

A meaningful valvular surveillance quality metric would require:

1. Identification of all patients in the practice with documented moderate or severe valvular disease (extractable from echocardiogram reports in the EHR)
2. Application of guideline-recommended surveillance intervals to each patient (1-2 years for moderate AS/AR/MR, 6-12 months for severe asymptomatic AS/AR/MR)
3. Measurement of the percentage of patients receiving echocardiography within the recommended window
4. Reporting of this metric to the clinical practice with peer comparison data

None of these steps require new technology. They require the extraction and application of existing EHR data. The barrier is institutional priority. When valve surveillance becomes a tracked metric, it becomes a managed metric.

A structured cardiovascular assessment provides this function at the individual patient level: a systematic review of echocardiogram history, severity grading, and surveillance timing for each enrolled patient. At scale, structured remote monitoring builds the longitudinal tracking infrastructure. At the population level, this clinical framework’s architecture addresses what population health management programs have not yet systematically reached.

The Physician Communication Gap

A survey of patients with moderate-to-severe valvular disease found that fewer than 40 percent could accurately state the name of the valve disease they had been diagnosed with, and fewer than 25 percent could correctly state their last echocardiographic severity grade 3 / Early . This is not a patient literacy problem. It is a physician communication problem.

The echocardiogram report that says “moderate aortic stenosis, valve area 1.3 cm²” is written for a physician. When the cardiologist reviews this report with the patient and says “your echo looks okay, we will check it again in a year,” the patient leaves with no specific information to act on. She does not know that “moderate” means she is one category away from “severe,” which carries intervention thresholds. She does not know what symptoms to report. She does not know whether there is something she should avoid. She does not know when “in a year” means in calendar terms or whether anyone will follow up to schedule it.

The communication standard for valvular disease should include:

1. The name of the valve and the direction of the lesion (stenosis vs. regurgitation)
2. The current severity grade in plain language (“your aortic valve opening is narrowed to about one-third of its normal size”)
3. The trend since the last examination (“it has progressed slightly from last year’s measurement”)
4. The threshold for intervention and the current proximity to that threshold (“when it reaches the severe category, we discuss a procedure”)
5. The surveillance plan with a specific date (“your next echocardiogram is scheduled for [date], and my office will contact you if that changes”)
6. The symptom triggers that require an unscheduled call (“if you develop chest pain, fainting, or increasing shortness of breath, call before the next scheduled appointment”)

That communication standard takes approximately 4 minutes. It does not require a dedicated consultation. It requires that the physician delivering the information has prepared it before entering the room, which requires that the practice has a workflow for preparing it. The framework is teachable. The workflow is buildable. The outcome is a patient who functions as an active participant in their own cardiac surveillance rather than a passive recipient of procedures she does not understand.

Closing the Loop on the Murmur Decision Framework

The murmur decision framework is a clinical tool. Like all clinical tools, it functions in proportion to the skill of the person using it and the system that supports its application.

The framework does not eliminate clinical uncertainty. The 52-year-old with the Grade 2 RUSB murmur who has aortic sclerosis and a Vmax of 1.9 m/s is not definitively innocent or definitively structural. She sits at the boundary, and her clinical management requires a judgment that the algorithm informs but does not replace.

What the framework eliminates is the clinical default of inaction in the face of uncertainty. The physician who hears a murmur and decides to “see how it goes” without a specific decision has not exercised clinical judgment. They have exercised clinical avoidance. The framework makes the avoidance choice visible by providing the explicit decision tree that must be either followed or consciously overridden.

In Urbana, in Springfield, in Peoria, in Chicago’s south and west sides, there are patients today with moderate AS who have not had an echocardiogram in 3 years. There are patients with progressive MR whose LV end-systolic dimension is 44 mm and rising, crossing the intervention threshold quietly, without anyone tracking the trend. There are patients with diastolic murmurs who have never been asked about childhood joint pains in sub-Saharan Africa or South Asia.

The murmur decision framework makes the response to each of these situations explicit. What happens after the framework is applied depends on the clinician, the practice model, and the system that connects the finding to the follow-through.

That is where this program begins.

The Signal Check is fifteen questions mapping the cardiovascular risk pattern across the physiological domains most commonly missed in standard screenings. It produces a specific starting point for your next clinical conversation.