Valvular heart disease nursing: a complete reference guide

Introduction

Valvular heart disease (VHD) encompasses any disorder affecting the structure or function of the heart’s four valves — mitral, aortic, tricuspid, and pulmonic. Each valve can develop stenosis (restricted opening, impeding forward flow) or regurgitation (incomplete closure, allowing backward flow). The nursing implications differ sharply between valve types, between stenosis and regurgitation, and between acute and chronic presentations.

This reference covers the six major valvular disorders tested on NCLEX and encountered in medical-surgical and critical care settings: mitral stenosis, mitral regurgitation, aortic stenosis, aortic regurgitation, tricuspid regurgitation, and pulmonic stenosis. For each, you will find pathophysiology, clinical presentation, murmur characteristics, and nursing priorities — plus three reference tables and 12 NCLEX tips that tie the concepts together.

Valvular disease quick reference

Murmur characteristics comparison

Mitral stenosis

Pathophysiology

The mitral valve separates the left atrium (LA) from the left ventricle (LV). In mitral stenosis (MS), fusion and fibrosis of the valve leaflets — most commonly from rheumatic heart disease — progressively narrow the mitral valve orifice. Normal mitral valve area (MVA) is 4–6 cm²; symptoms typically emerge when MVA falls below 2.0 cm², and stenosis is considered severe at MVA less than 1.5 cm².

As the valve narrows, blood backs up behind the obstruction. Left atrial pressure rises chronically, causing LA enlargement — the hallmark structural consequence of mitral stenosis. Elevated LA pressure transmits backward to the pulmonary veins and pulmonary capillaries, eventually producing pulmonary hypertension, right heart failure, and pulmonary edema.

The LA dilation is the substrate for atrial fibrillation. AFib develops in up to 40% of patients with significant mitral stenosis and is a pivotal complication: the loss of atrial kick (atrial contraction contributing to ventricular filling) further reduces cardiac output across the already narrowed valve, and the slow, irregular rhythm allows more time for thrombus formation in the enlarged, hypocontractile LA appendage. Systemic embolism and stroke are major risks. See the atrial fibrillation nursing reference for anticoagulation management.

Etiology

• Rheumatic heart disease — the dominant cause worldwide. Group A Streptococcal pharyngitis triggers an autoimmune inflammatory response (rheumatic fever) that damages valve leaflets, causing leaflet fusion, calcification, and subvalvular scarring. The mitral valve is most commonly affected. Symptoms of MS typically appear 20–40 years after the initial rheumatic fever episode.
• Mitral annular calcification — degenerative calcification of the mitral annulus in elderly patients; less severe than rheumatic MS
• Congenital — rare; may present in infancy or childhood

Clinical presentation

• Dyspnea on exertion progressing to dyspnea at rest — the most common symptom; from pulmonary venous hypertension and pulmonary edema
• Orthopnea and paroxysmal nocturnal dyspnea — position-dependent worsening of pulmonary congestion
• Fatigue — reduced cardiac output from the fixed obstruction at the mitral valve
• Palpitations — AFib, which worsens symptoms acutely
• Hemoptysis — rupture of dilated bronchial vessels under chronically elevated pulmonary venous pressure; typically blood-streaked sputum
• Malar flush (mitral facies) — a rosy or ruddy discoloration of the cheeks in patients with chronic low cardiac output and pulmonary hypertension; more common in young patients; rarely seen today
• Right heart failure signs — JVD, peripheral edema, hepatomegaly — in advanced disease with pulmonary hypertension
• Opening snap — a crisp, high-pitched early diastolic sound caused by the sudden tensing of the fused mitral leaflets when they reach maximum opening; heard best at the apex. The interval between S2 and the opening snap shortens as stenosis worsens (higher LA pressure = earlier valve opening).
• Diastolic rumble — the low-pitched mid-diastolic murmur of blood turbulently crossing the narrowed valve; heard best at the apex with the patient in left lateral decubitus position, using the bell of the stethoscope

Management

Medical:

• Rate control — slowing the heart rate allows more diastolic filling time across the stenotic valve; beta-blockers or rate-limiting calcium channel blockers (diltiazem, verapamil); critical in patients with AFib
• Anticoagulation — all patients with MS and AFib require anticoagulation (warfarin preferred; NOACs are used but evidence is less established for MS-related AFib); goal is to prevent LA thrombus and stroke
• Diuretics — reduce pulmonary congestion; loop diuretics (furosemide) for symptom relief; use cautiously to avoid excess preload reduction
• Antibiotic prophylaxis for recurrent Streptococcal infection (rheumatic fever prevention) in patients with a history of rheumatic fever

Interventional:

• Percutaneous mitral balloon valvuloplasty (PMBV) — the procedure of choice for suitable anatomy (pliable, non-calcified leaflets, no LA thrombus, no more than mild mitral regurgitation). A balloon catheter is advanced across the mitral valve and inflated, splitting the fused commissures. Highly effective and durable in appropriate patients.
• Surgical mitral valve repair or replacement (MVR) — for patients with unfavorable valve anatomy, significant calcification, or concomitant mitral regurgitation; tissue or mechanical prostheses (mechanical requires lifelong anticoagulation)

Mitral regurgitation

Pathophysiology

In mitral regurgitation (MR), the mitral valve fails to close completely during systole, allowing blood to flow backward from the LV into the LA. This volume overload creates two distinct syndromes depending on onset: acute MR and chronic MR are hemodynamically and clinically very different.

Acute MR is a cardiac emergency. The LA has not had time to dilate and accommodate the sudden volume overload — LA pressure spikes dramatically, transmitting immediately to the pulmonary vasculature. The result is flash pulmonary edema and cardiogenic shock. Patients are critically ill within hours.

Chronic MR develops gradually over months to years. The LA and LV dilate progressively to accommodate the regurgitant volume, maintaining forward cardiac output at the cost of chamber enlargement. For years, patients may be asymptomatic. Eventually, LV dysfunction develops — the chronically volume-overloaded ventricle dilates beyond its ability to compensate, and ejection fraction falls. Once symptomatic or EF declines below 60%, surgical intervention becomes urgent.

Etiology

Acute:

• Papillary muscle rupture — a catastrophic complication of myocardial infarction, typically occurring 2–7 days post-MI (the posterior papillary muscle is more commonly affected because it has a single blood supply from the RCA). Sudden, severe MR causes hemodynamic collapse. See the MI/ACS nursing reference for the ACS context.
• Chordae tendineae rupture — from endocarditis, myxomatous degeneration, or trauma
• Infective endocarditis — vegetation disrupts leaflet coaptation; see infective endocarditis nursing

Chronic:

• Mitral valve prolapse (MVP) — the most common cause of chronic primary MR in developed countries; myxomatous degeneration of leaflets allows posterior leaflet billowing into the LA during systole
• Rheumatic heart disease — leaflet retraction and fibrosis prevents closure; usually mixed stenosis and regurgitation
• Dilated cardiomyopathy — annular dilation from LV enlargement causes functional (secondary) MR without intrinsic leaflet disease; see cardiomyopathy nursing
• Ischemic MR — regional wall motion abnormalities from coronary disease distort papillary muscle geometry chronically

Clinical presentation

Acute MR:

• Abrupt onset dyspnea, orthopnea, pulmonary edema
• Cardiogenic shock — hypotension, tachycardia, cold/clammy skin, decreased urine output
• New harsh holosystolic murmur at apex (may be soft if cardiac output is severely reduced)
• CXR: pulmonary edema without cardiomegaly (no time for cardiac enlargement)

Chronic MR:

• Exertional dyspnea, fatigue — develop insidiously over years
• Holosystolic blowing murmur at the apex, radiating to the left axilla; high-pitched; present throughout systole from S1 to S2
• S3 gallop — from volume overload and LV dilation
• Displaced PMI — LV enlargement shifts the apical impulse laterally
• LA enlargement — risks AFib and thrombus formation
• Signs of left heart failure in decompensated chronic MR

Management

Acute MR:

• IV vasodilators — sodium nitroprusside reduces afterload, decreasing the fraction of stroke volume that regurgitates backward and improving forward output. This is the pharmacologic bridge to surgery.
• Intra-aortic balloon pump (IABP) — reduces afterload mechanically; used as bridge to surgery when nitroprusside is insufficient
• Emergent surgical repair or replacement — definitive treatment; acute severe MR carries very high mortality without urgent surgery
• Avoid beta-blockers — slowing the heart rate in acute MR increases regurgitant volume per beat

Chronic MR:

• ACE inhibitors — reduce afterload in symptomatic patients; preserve LV function; standard management in LV dysfunction
• Loop diuretics — manage volume overload and pulmonary congestion
• Surgical mitral valve repair (preferred) or replacement — indicated when symptoms develop, when EF falls below 60%, or when LV end-systolic diameter exceeds 40 mm
• Transcatheter edge-to-edge repair (MitraClip) — for high surgical-risk patients with secondary MR and heart failure; improves symptoms and reduces HF hospitalizations

Aortic stenosis

Pathophysiology

Aortic stenosis (AS) is the most common valvular heart disease requiring intervention in developed countries. The aortic valve separates the LV from the aorta; when stenotic, it obstructs LV outflow during systole. The LV responds with compensatory concentric hypertrophy — the walls thicken to maintain stroke volume against the increased pressure gradient. For years, the hypertrophied LV sustains near-normal cardiac output. Eventually, the ventricle fails to compensate: symptoms emerge, and median survival without intervention drops sharply.

Severe AS is defined as aortic valve area (AVA) less than 1.0 cm² (normal: 3–4 cm²) or a mean gradient greater than 40 mmHg. The valve gradient drives turbulent flow through the narrowed orifice, generating the characteristic harsh ejection murmur.

Etiology

• Calcific (degenerative) aortic stenosis — the most common cause in adults over 65 in the United States. Progressive calcium deposits accumulate on leaflet bases over decades. Age, male sex, hypertension, hyperlipidemia, and smoking accelerate calcification. This is fundamentally an active inflammatory process resembling atherosclerosis.
• Bicuspid aortic valve (BAV) — a congenital abnormality affecting 1–2% of the population; the valve has two leaflets instead of three. Abnormal leaflet architecture causes turbulent flow and accelerated calcification; AS typically presents 20–30 years earlier than in tricuspid valves (often in patients in their 50s–60s). BAV is also associated with aortic root dilation and aortic dissection risk.
• Rheumatic AS — commissural fusion from prior rheumatic fever; less common in developed countries

Clinical presentation: the classic triad

The three hallmark symptoms of severe aortic stenosis represent sequential stages of decompensation. Their onset marks a sharp deterioration in prognosis without intervention:

1. Angina — the first symptom to appear (average survival 5 years without intervention). The hypertrophied LV has increased oxygen demand but impaired coronary perfusion reserve — subendocardial ischemia occurs during demand states even without obstructive coronary artery disease. Nitroglycerin for AS-related angina must be used cautiously — it reduces preload and afterload, potentially causing severe hypotension in the pressure-dependent AS patient.

2. Syncope (exertional) — average survival 3 years without intervention. During exercise, peripheral vasodilation occurs normally, but the fixed stenotic obstruction prevents the LV from increasing cardiac output proportionally. The result is a sudden fall in systemic blood pressure and cerebral perfusion. The mechanism may also involve vasodepressor reflex activation.

3. Dyspnea (heart failure) — average survival 1–2 years without intervention. The LV ultimately fails — the hypertrophied, stiff ventricle develops diastolic dysfunction, elevated filling pressures, and pulmonary venous hypertension. Eventually systolic dysfunction supervenes.

Additional physical exam findings

• Pulsus parvus et tardus — the carotid pulse is weak and delayed (small amplitude, slow upstroke) due to reduced stroke volume crossing the stenotic valve; best appreciated by simultaneous palpation of the carotid and cardiac apex
• Diminished or absent S2 — calcified leaflets lose their closing snap; S2 becomes quiet, single, or paradoxically split
• Ejection click — a high-pitched sound just after S1, present only in bicuspid AV before calcification occurs; disappears as the valve becomes immobile
• Narrow pulse pressure — reduced stroke volume
• Systolic thrill — palpable vibration at the right upper sternal border in severe AS

Management

Medical — limitation: There is no medication proven to delay progression of AS. Statins, which were theorized to slow progression, did not reduce events in large trials. Medical therapy addresses symptoms and co-existing conditions (hypertension, heart failure) but does not replace intervention.

Interventional:

• Transcatheter aortic valve replacement (TAVR) — the standard of care for severe symptomatic AS in patients of any surgical risk. A bioprosthetic valve is delivered via catheter (typically transfemoral) and deployed within the native calcified valve. Originally used for high-risk patients, TAVR is now approved for intermediate and low surgical risk. Requires dual antiplatelet therapy post-procedure.
• Surgical aortic valve replacement (SAVR) — open-heart surgery; preferred in younger, low-surgical-risk patients (particularly with BAV), those needing concomitant bypass surgery, or when anatomy is unsuitable for TAVR
• Balloon aortic valvuloplasty — temporary dilation of the stenotic valve; used as a bridge to definitive intervention (TAVR/SAVR) in hemodynamically unstable patients; not durable as a long-term solution

See heart failure nursing for the acute decompensated HF management that may be needed before valve intervention.

Aortic regurgitation

Pathophysiology

In aortic regurgitation (AR), the aortic valve fails to close completely during diastole, allowing blood to flow back from the aorta into the LV. The regurgitant volume increases LV end-diastolic volume (volume overload), causing progressive LV dilation and eccentric hypertrophy — the LV enlarges to accommodate the combined forward and regurgitant volumes.

As in MR, the hemodynamics of acute and chronic AR differ dramatically.

Acute AR is a cardiac emergency. The LV has not had time to dilate — normal diastolic pressure is suddenly overwhelmed by the high-pressure aortic regurgitant flow. LV end-diastolic pressure rises precipitously, closes the mitral valve prematurely (premature mitral valve closure), and back-pressures into the pulmonary circulation: flash pulmonary edema and cardiogenic shock. Patients deteriorate within hours.

Chronic AR allows years of progressive LV dilation and volume adaptation, during which patients may remain asymptomatic. The dilating LV accommodates increasing regurgitant volume. The aortic root often enlarges as well. Eventually, LV dysfunction develops.

The widened pulse pressure — the difference between systolic and diastolic BP — is the hemodynamic signature of chronic AR. The regurgitant volume swells aortic systolic pressure while diastole is shortened by the backward leak, dropping diastolic pressure. A pulse pressure greater than 60 mmHg suggests significant AR.

Etiology

Acute:

• Aortic dissection — Type A dissection can involve the aortic valve root, causing acute AR; a cardiovascular emergency. See aortic dissection nursing
• Infective endocarditis — leaflet destruction from vegetations; see infective endocarditis nursing
• Trauma — blunt chest trauma causing leaflet prolapse

Chronic:

• Bicuspid aortic valve — same structural abnormality that causes AS; can also cause AR from leaflet prolapse
• Aortic root dilation — Marfan syndrome, Ehlers-Danlos syndrome, or idiopathic aortic root enlargement; the root dilates, pulling the leaflets apart during diastole
• Rheumatic heart disease — leaflet scarring and retraction; often mixed stenosis and regurgitation
• Syphilitic aortitis — historical cause; inflammation of the ascending aorta and aortic root

Clinical presentation and peripheral signs

Chronic AR produces a constellation of physical signs from the bounding, high-amplitude arterial pulse:

• Corrigan’s pulse (water-hammer pulse) — an abrupt, forceful systolic impulse that collapses rapidly; felt in the carotid or radial arteries; caused by the large stroke volume and rapid diastolic runoff
• de Musset’s sign — head bobbing synchronous with the heartbeat; from the same mechanism
• Quincke’s pulse — visible nail bed pulsations (capillary pulsations) visible with gentle pressure on the fingertip
• Duroziez’s sign — a systolic and diastolic bruit heard over the femoral artery with partial compression
• Traube’s sign — a pistol-shot sound heard over the femoral artery
• Widened pulse pressure — systolic BP elevated; diastolic BP low (often below 60 mmHg)
• Diastolic murmur — high-pitched early diastolic blowing murmur at the left sternal border; best heard with the diaphragm, patient sitting forward, breath held at end-expiration; decrescendo in character
• Austin Flint murmur — a diastolic rumble at the apex mimicking mitral stenosis; caused by the regurgitant jet impinging on the anterior mitral leaflet, causing functional mitral obstruction

Management

Acute AR:

• Emergent surgical aortic valve replacement — the only effective treatment; medical stabilization is a very short bridge
• IV vasodilators (nitroprusside) — reduce afterload and regurgitant fraction temporarily
• Inotropes (dobutamine) — support forward output
• AVOID beta-blockers — slowing the heart rate in acute AR allows more time for diastolic regurgitation, worsening the hemodynamic burden

Chronic AR:

• Vasodilators — ACE inhibitors or nifedipine in symptomatic patients or those with LV dysfunction; reduce afterload and regurgitant fraction; slow LV dilation
• Surgical AVR — indicated when symptoms develop, when EF falls below 55%, when LV end-systolic diameter exceeds 50–55 mm, or when progressive LV dilation is documented

Tricuspid regurgitation

Pathophysiology

The tricuspid valve separates the right atrium (RA) from the right ventricle (RV). Tricuspid regurgitation (TR) allows backward flow from the RV to the RA during systole. In most cases, TR is functional (secondary) — the tricuspid valve leaflets and chordae are structurally normal, but RV pressure overload or dilation from left-sided heart disease stretches the tricuspid annulus, preventing complete leaflet coaptation.

Severe TR elevates right atrial pressure, which back-pressures into the systemic venous circulation. The classic signs of TR are all downstream consequences of chronically elevated venous pressure.

Etiology

• Secondary to right heart failure — the most common mechanism; left-sided heart failure, pulmonary hypertension from any cause (see pulmonary hypertension nursing), dilated cardiomyopathy, or chronic left-sided valve disease all elevate right-sided pressures
• Infective endocarditis — particularly in IV drug users; the tricuspid valve is the right-sided valve most exposed to bacteremic insults from injected material. Staphylococcus aureus is the predominant organism; septic pulmonary emboli are a key complication.
• Rheumatic disease — rarely isolated; usually accompanies rheumatic mitral disease
• Carcinoid syndrome — carcinoid tumor deposits fibrous plaques on right-sided heart valves, causing TR (and pulmonic stenosis); associated with elevated 5-HIAA and carcinoid flushing

Clinical presentation

All findings reflect chronically elevated systemic venous pressure:

• Jugular venous distension (JVD) — prominent; with characteristic CV waves visible on inspection of the neck veins
• Pulsatile liver (hepatic pulsations) — systolic pulsations of the liver from transmitted RV pressure; felt with gentle palpation of the right upper quadrant
• Hepatomegaly — congestive hepatopathy from chronic venous congestion
• Ascites — from portal hypertension secondary to hepatic congestion
• Peripheral edema — bilateral, dependent; from elevated venous pressure and neurohormonal fluid retention
• Fatigue — reduced right heart output
• Holosystolic murmur at the left lower sternal border; characteristically increases with inspiration (Carvallo’s sign) — inspiration increases venous return to the right heart, increasing regurgitant flow across the tricuspid valve and augmenting the murmur

For a comprehensive view of right heart failure signs, see the heart failure nursing reference.

Management

• Treat the underlying cause — correcting the causative left-sided lesion (e.g., MVR for mitral stenosis) often reduces RV pressure and secondary TR over time
• Diuretics — loop diuretics reduce systemic venous congestion; spironolactone for persistent edema and ascites
• Surgical repair or replacement — annuloplasty (ring repair) is preferred; replacement with a bioprosthesis for irreparable leaflet disease; typically performed at the time of left-sided valve surgery
• Endocarditis management — long-course IV antibiotics; surgery for persistent bacteremia, recurrent septic emboli, or vegetations causing severe regurgitation

Pulmonic stenosis

Pathophysiology

Pulmonic stenosis (PS) is narrowing of the pulmonic valve or subvalvular/supravalvular region, obstructing RV outflow into the pulmonary artery. The RV responds with hypertrophy (as the LV does in AS), and with enough obstruction, eventually dilates and fails.

Unlike the other valvular diseases, pulmonic stenosis is almost always congenital. It is one of the most common congenital heart defects encountered in adult cardiology practice.

Etiology

• Congenital — accounts for the vast majority of cases; may be isolated or part of a syndrome:
  • Tetralogy of Fallot — the most common cyanotic congenital heart disease; includes RV outflow tract obstruction, VSD, overriding aorta, RVH
  • Rubella syndrome — maternal rubella infection in the first trimester causes multiple cardiac defects including PS
  • Noonan syndrome — autosomal dominant; dysplastic pulmonary valve
• Carcinoid — acquired; carcinoid fibrous plaques deposit on right-sided valves, causing both pulmonic stenosis and tricuspid regurgitation

Clinical presentation

Mild PS (gradient <25 mmHg) is typically asymptomatic. Moderate to severe PS produces:

• Exertional dyspnea and fatigue — from reduced RV output
• Exertional syncope — fixed RV outflow obstruction limits cardiac output response to exercise
• Right-sided heart failure signs — JVD, peripheral edema, hepatomegaly, ascites in severe, longstanding PS
• Parasternal heave — RV hypertrophy producing a palpable left parasternal lift
• Prominent jugular A wave — forceful right atrial contraction against a hypertrophied, non-compliant RV
• Systolic ejection murmur at the left upper sternal border; preceded by an ejection click (the click is louder with expiration in PS — opposite of aortic ejection click)
• Widely split S2 — pulmonic valve closure is delayed by the obstruction

Management

• Balloon pulmonary valvuloplasty — the definitive treatment for moderate to severe valvular PS (gradient >40 mmHg or symptomatic patients); outcomes are excellent; most patients do not require repeat procedures
• Surgical valvotomy or valve replacement — for dysplastic valves unsuitable for balloon techniques, or in the context of complex congenital heart disease
• Prognosis — isolated PS carries a favorable long-term prognosis with appropriate intervention; the valve gradient frequently remains stable or progresses slowly over decades in mild cases

Nursing priorities by valve disorder

Valvular disease and heart failure

All significant valvular lesions — whether stenotic or regurgitant, left-sided or right-sided — eventually impair cardiac output and elevate filling pressures, producing heart failure. Understanding the direction of that failure is important for nursing priorities:

Left-sided valvular disease (mitral stenosis, mitral regurgitation, aortic stenosis, aortic regurgitation) primarily produces left heart failure: pulmonary venous hypertension, pulmonary edema, dyspnea, orthopnea, and paroxysmal nocturnal dyspnea. Advanced left-sided disease transmits backward to cause pulmonary arterial hypertension and then right heart failure as well.

Right-sided valvular disease (tricuspid regurgitation, pulmonic stenosis) primarily produces right heart failure: elevated systemic venous pressure, JVD, peripheral edema, hepatomegaly, and ascites — with relatively spared pulmonary circulation.

This distinction helps nurses prioritize: a patient with severe mitral stenosis needs respiratory monitoring and supine position adjusted upward; a patient with severe tricuspid regurgitation needs abdominal assessment and meticulous fluid balance.

For comprehensive heart failure nursing, including assessment, diuretic therapy, hemodynamic targets, and patient education, see the heart failure nursing reference.

Infective endocarditis and valvular disease

Any valvular abnormality — whether congenital or acquired — creates turbulent blood flow that predisposes to bacterial seeding of the valve endothelium. Once established, endocarditis progressively destroys valve tissue, causing acute regurgitation (most commonly) or, less often, obstruction from bulky vegetations.

Key connections:

• IV drug use is the leading risk factor for right-sided endocarditis (tricuspid valve) — Staphylococcus aureus, with septic pulmonary emboli
• Dental procedures and invasive procedures are triggers for left-sided endocarditis in patients with pre-existing valve disease
• Endocarditis prophylaxis is indicated for high-risk patients (prosthetic valves, prior endocarditis, certain congenital defects) undergoing dental procedures — 2g amoxicillin 30–60 minutes before the procedure

For Duke criteria, antibiotic regimens, and detailed nursing management, see the infective endocarditis nursing reference.

Cardiac rhythm monitoring in valvular disease

Valvular disease places patients at high risk for arrhythmias. Nurses must understand the rhythm risks associated with each valve disorder:

• Mitral stenosis — LA enlargement is the substrate for AFib; AFib occurs in up to 40% of patients with significant MS and worsens symptoms acutely
• Mitral regurgitation — chronic LA and LV dilation both predispose to AFib and ventricular arrhythmias
• Aortic stenosis — LV hypertrophy creates an arrhythmogenic substrate; new AFib can precipitate acute decompensation; TAVR procedure carries risk of complete heart block and new left bundle branch block requiring temporary or permanent pacing
• Tricuspid regurgitation — RA dilation predisposes to AFib and atrial flutter
• Pulmonic stenosis — post-repair patients may develop right bundle branch block; severe PS with RV failure can cause atrial arrhythmias

Continuous telemetry is standard for hospitalized patients with significant valvular disease. See the EKG interpretation cheat sheet for rhythm recognition.

Pharmacology in valvular heart disease

Several medication categories are central to valvular disease management — and a few that are standard in other cardiac conditions carry specific risks in VHD:

• Cardiovascular medications reference — see cardiovascular medications nursing for detailed drug class coverage including ACE inhibitors, beta-blockers, anticoagulants, and diuretics

Critical medication cautions:

See the cardiovascular medications nursing reference for dosing, monitoring parameters, and full contraindication profiles.

NCLEX tips

• Diastolic murmurs = aortic regurgitation or mitral stenosis. Systolic murmurs = aortic stenosis or mitral regurgitation. This is the most fundamental NCLEX differentiator. Memorize it: stenosis of the AV (a valve that opens in systole) causes a systolic murmur; regurgitation of the MV (a valve that should be closed in systole) causes a systolic murmur. Flip the reasoning for diastole.

• Aortic stenosis classic triad: syncope, angina, dyspnea on exertion — appearing in that order as stenosis worsens. Survival after symptom onset: angina = 5 years, syncope = 3 years, dyspnea/HF = 1–2 years. These numbers appear on NCLEX.

• The opening snap of mitral stenosis comes after S2, not before. The shorter the S2-to-opening snap interval, the more severe the stenosis (higher LA pressure = more forceful, earlier leaflet opening). A longer interval = milder stenosis.

• NEVER give nitrates for angina in aortic stenosis without extreme caution. Nitroglycerine causes preload and afterload reduction. In AS, the LV depends on adequate filling to push blood through the stenotic valve. Nitrates can cause catastrophic hypotension. This is a classic NCLEX trap: the patient with AS has chest pain — what do you give? Call the provider before administering nitrates; it is not routine first-line treatment.

• Papillary muscle rupture post-MI = acute mitral regurgitation — presents 2–7 days after MI with sudden onset pulmonary edema and a new holosystolic murmur. This is a surgical emergency. The nurse’s role: recognize the new murmur + hemodynamic deterioration and escalate immediately.

• Corrigan’s pulse + wide pulse pressure = aortic regurgitation. Widened pulse pressure (systolic minus diastolic >60 mmHg) is the hemodynamic signature. The bounding, water-hammer pulse quality reflects the large stroke volume and rapid diastolic runoff. NCLEX will describe “bounding pulses” and a “wide pulse pressure” — the answer is aortic regurgitation.

• Mitral stenosis + AFib = embolic stroke risk. LA enlargement from MS creates stasis in the LA appendage. AFib removes the atrial kick and further promotes stasis. The combination mandates anticoagulation. On NCLEX, a patient with MS who develops irregular rhythms and new neurological changes = stroke from LA thrombus embolization.

• The tricuspid regurgitation murmur increases with inspiration (Carvallo’s sign) — right-sided murmurs increase with inspiration because inspiratory negative pressure increases venous return to the right heart, augmenting right-sided flow. Left-sided murmurs (MR, AS) are louder with expiration. Inspiration = right side; expiration = left side.

• Pulmonic stenosis ejection click decreases with inspiration — this is opposite to the aortic ejection click (which is unaffected by respiration). The pulmonic ejection click is loudest in expiration and softer in inspiration; the NCLEX can test this as a distinguishing feature of pulmonic vs aortic valve origin of an ejection click.

• IV drug use + right-sided valve disease = tricuspid endocarditis. The NCLEX question will describe a patient with IV drug use presenting with fever, septic pulmonary emboli (pleuritic chest pain, multiple pulmonary opacities on CXR), and a murmur at the left lower sternal border. The answer is tricuspid valve infective endocarditis from Staphylococcus aureus. See infective endocarditis nursing.

• Aortic stenosis murmur radiates to the carotids; mitral regurgitation murmur radiates to the axilla. Both are heard best at different locations: AS at the right upper sternal border; MR at the apex. Radiation pattern is a key NCLEX exam differentiator — radiation to the neck = aortic origin; radiation to the axilla = mitral regurgitation.

• TAVR post-procedure nursing: watch for conduction defects. The TAVR procedure places a prosthetic valve inside the native calcified valve. The pressure of deployment can injure the cardiac conduction system — new left bundle branch block and complete heart block (requiring permanent pacemaker) are recognized complications. Post-TAVR patients need continuous telemetry, and the nurse must recognize and report new PR prolongation, LBBB, or complete heart block. See EKG interpretation cheat sheet.

Related resources

• Heart failure nursing: assessment, interventions, and NCLEX review — essential companion for understanding left and right heart failure consequences of valvular disease
• Atrial fibrillation nursing: assessment, interventions, and NCLEX review — AFib management in the context of mitral stenosis and other valvular diseases predisposing to LA dilation
• Aortic dissection nursing: assessment, interventions, and NCLEX review — acute AR from Type A dissection; aortic root involvement
• Infective endocarditis nursing: assessment, interventions, and NCLEX review — valve destruction mechanism; Duke criteria; endocarditis prophylaxis
• Cardiomyopathy nursing: types, assessment, and management — structural heart disease context; HOCM dynamic LVOT obstruction contrasted with fixed aortic stenosis
• Cardiovascular medications nursing reference — drug classes used in VHD management
• MI/ACS nursing: assessment, interventions, and NCLEX review — papillary muscle rupture causing acute MR post-MI
• EKG interpretation cheat sheet — rhythm monitoring for AFib, heart block, conduction changes post-TAVR