Cardiovascular assessment: a guide for nursing students

Cardiovascular assessment is the systematic examination of the heart and peripheral vascular system using inspection, palpation, percussion, and auscultation (IPPA). For nurses, it is the clinical foundation for detecting deterioration early — a displaced point of maximal impulse (PMI) may signal ventricular enlargement before the patient reports symptoms; an S3 gallop often precedes overt pulmonary edema in heart failure; absent pedal pulses can mean a limb is hours from ischemia. Mastering cardiovascular assessment means knowing not only what to find, but what each finding implies and what to do about it. This guide walks through every component of the exam — from patient positioning to peripheral pulses — and explains the clinical significance of each abnormal finding, with documentation language, NCLEX tips, and practice scenarios.

For the full head-to-toe framework, see head-to-toe assessment.

Patient preparation and equipment

Positioning: Place the patient in a semi-recumbent position at 30–45°. This angle is critical: it allows accurate estimation of jugular venous pressure (JVP) and permits the examiner to move the patient to the left lateral decubitus position (for S3/S4 auscultation) and to sitting upright (for aortic regurgitation murmurs and pericardial friction rubs).

Privacy and exposure: Expose the anterior chest fully. For female patients, use a drape and expose only the area being examined.

Lighting: Tangential lighting (light source at an angle to the chest surface) makes subtle precordial movements — heaves, lifts, the PMI — visible. Overhead lighting washes these out.

Equipment:

• Stethoscope with both bell and diaphragm — the two chest pieces serve different purposes and cannot substitute for each other
  • Diaphragm (firm pressure): detects high-frequency sounds — S1, S2, pericardial friction rubs, most systolic murmurs
  • Bell (light pressure): detects low-frequency sounds — S3, S4, mitral stenosis rumble, some diastolic murmurs. Apply with just enough pressure to seal the skin. Pressing the bell too firmly converts it acoustically into a diaphragm and the low-frequency sounds disappear.
• Ruler or tape measure (JVP measurement)
• Pen light
• Watch with a second hand (pulse timing)

Step-by-step cardiovascular assessment

Inspection

Jugular venous pressure (JVP) estimation

JVP reflects right atrial filling pressure and is one of the most informative — and most frequently skipped — cardiovascular signs.

1. Position the patient at 30–45°, head turned slightly away from the examiner.
2. Identify the internal jugular vein (preferred over external jugular — its pulsation is more reliable). The internal jugular runs deep to the sternocleidomastoid; its pulsation is seen as a flicker just lateral to the trachea, not a vessel you can palpate.
3. Identify the sternal angle (angle of Louis) — the bony ridge where the manubrium meets the body of the sternum, approximately 5 cm above the right atrium.
4. Measure the vertical height of the highest visible pulsation above the sternal angle.
5. Normal: <3 cm above the sternal angle at 45°. Elevation >4 cm indicates elevated central venous pressure — consider heart failure, cardiac tamponade, constrictive pericarditis, or tricuspid stenosis.

Most nursing resources mention JVP without explaining the measurement technique. The vertical height — not the distance along the neck — is what matters: a patient at 30° will have an apparently higher column than the same patient at 45°, but the vertical component must be measured with a ruler perpendicular to the horizon.

Hepatojugular reflux (HJR) test

This test is practically absent from most nursing assessment guides.

1. With the patient at 45°, watch the internal jugular pulsation.
2. Apply firm, sustained pressure to the right upper quadrant (liver) for 10–15 seconds while observing the neck.
3. Positive finding: JVP rises >3 cm and remains elevated for the duration of pressure. This indicates the right ventricle cannot accommodate the increased venous return — consistent with elevated right heart pressure, right ventricular failure, or biventricular heart failure.
4. A transient rise (<5 sec) followed by return to baseline is normal.

Precordial inspection

Inspect the anterior chest wall with tangential lighting:

• PMI (point of maximal impulse): Normally visible as a brief outward impulse in the 5th intercostal space (ICS), midclavicular line (MCL). Seen in roughly 50% of adults at rest.
• Heaves and lifts: A sustained, forceful outward movement suggests ventricular hypertrophy. A right ventricular heave (left parasternal) indicates RV enlargement (cor pulmonale, pulmonary hypertension). A left ventricular heave displaces the PMI leftward and is associated with LV enlargement.
• Visible pulsations: Vigorous pulsations in the second ICS at the right sternal border (aortic area) may indicate aortic aneurysm or severe aortic regurgitation.

Peripheral inspection

• Nail clubbing: Loss of the normal 160° angle between the nail plate and the nail bed (Schamroth’s sign). Associated with cyanotic congenital heart disease, infective endocarditis, and pulmonary causes.
• Cyanosis: Central cyanosis (lips, tongue, oral mucosa) indicates arterial desaturation — cardiac or pulmonary. Peripheral cyanosis (fingertips, toes) may indicate poor perfusion without desaturation.
• Pitting edema: See grading table in the peripheral vascular section.
• Xanthelasmas: Yellowish plaques around the eyelids — associated with hyperlipidemia and increased cardiovascular risk.
• Splinter hemorrhages: Linear streaks under the nails — associated with infective endocarditis (though also seen with trauma).

Palpation

PMI (point of maximal impulse)

Palpate with the fingertips at the 5th ICS, MCL. Characterize:

• Location: Normal = 5th ICS, MCL. Displaced laterally (past the MCL) = LV enlargement. Displaced laterally and diffuse (felt over a wide area) = dilated cardiomyopathy. Displaced superiorly = diaphragm elevation.
• Duration: Brief (<2/3 of systole) is normal. Sustained = pressure overload (aortic stenosis, hypertension).
• Amplitude: A forceful, sustained heave = LV hypertrophy from chronic pressure overload.

PMI characteristics are high-yield NCLEX material that most nursing articles omit. A displaced, diffuse PMI is a physical exam red flag that warrants echocardiography.

Thrills

A thrill is a palpable vibration caused by turbulent blood flow — essentially, you are feeling a murmur. Use the palm of the hand over each auscultatory area. A thrill confirms a murmur of at least Grade IV (Levine scale). Its location localizes the pathology: a thrill at the right upper sternal border = aortic stenosis; at the left lower sternal border = ventricular septal defect.

Parasternal lift

Place the heel of the hand at the left sternal border. A sustained outward lift during systole = right ventricular hypertrophy.

Percussion

Cardiac percussion identifies the borders of cardiac dullness. Percuss from resonant lung tissue toward the heart:

• Left cardiac border: normally at or medial to the MCL in the 5th ICS
• Right cardiac border: normally within 2–3 cm of the right sternal border

Clinical caveat: Percussion has limited sensitivity and specificity for cardiac enlargement. Chest X-ray and echocardiography are far more accurate. However, significant cardiomegaly may produce a dullness extending clearly beyond the MCL, and percussion can identify a pleural effusion that is blunting the left cardiac border. Note this limitation when documenting.

Auscultation

Auscultation is the most informative component of the cardiac exam. Systematic examination of all five landmark positions is mandatory.

Landmark positions and the mnemonic “All Physicians Take Money Back”

Auscultate in a quiet room. Ask the patient to breathe normally, then to hold a breath briefly at certain points (right-sided sounds increase with inspiration; left-sided sounds may decrease).

S1 and S2

• S1 (“lub”): closure of the mitral and tricuspid valves; marks the beginning of systole. Loudest at the apex.
• S2 (“dub”): closure of the aortic and pulmonic valves; marks the end of systole. Loudest at the base. S2 normally splits with inspiration (A2 before P2) — this is physiologic splitting.
• Fixed splitting (split present in both inspiration and expiration): associated with atrial septal defect.
• Paradoxical splitting (split present on expiration, disappears on inspiration): associated with left bundle branch block or severe aortic stenosis.

S3 and S4 heart sounds

• S3 (“Ken-tuc-KY” gallop rhythm): occurs in early diastole immediately after S2. Caused by rapid ventricular filling into a non-compliant or volume-overloaded ventricle. In adults over 40, S3 is pathological — a key marker of heart failure, dilated cardiomyopathy, or mitral regurgitation. In children and young adults (<30), S3 may be a normal finding. Use the bell with light pressure at the apex with the patient in the left lateral decubitus position.
• S4 (“TEN-nes-see” gallop rhythm): occurs in late diastole just before S1. Caused by atrial contraction against a stiff, non-compliant ventricle — associated with hypertension, aortic stenosis, hypertrophic cardiomyopathy, and acute MI. By definition, S4 cannot be present in atrial fibrillation (no atrial kick).

Murmur grading — the Levine scale

Use the diaphragm (systolic murmurs) or bell (diastolic murmurs) to characterize each murmur. Grade using the Levine I–VI scale:

Document murmurs by grade (e.g., “Grade III/VI systolic murmur”), timing (systolic vs. diastolic), location, radiation, quality (harsh, blowing, rumbling), and any positional changes.

Pericardial friction rub

A scratchy, high-pitched, to-and-fro sound heard best with the diaphragm at the left sternal border with the patient leaning forward and exhaling. Has up to three components (systolic, early diastolic, late diastolic with atrial contraction). Associated with pericarditis. Unlike a pleural rub, it does not disappear when the patient holds their breath.

Peripheral vascular component

Assess the peripheral vascular system concurrently with the cardiac exam. Document pulses using a 0–4+ amplitude scale:

Pulse assessment sites: Radial, brachial, carotid (one side at a time — avoid bilateral simultaneous palpation), femoral, popliteal, dorsalis pedis, posterior tibial.

For each pulse, note: rate, rhythm (regular, irregular, irregularly irregular), amplitude (0–4+), and equality bilaterally. For radial pulse: count for a full 60 seconds in any patient with suspected irregular rhythm.

Capillary refill time: Press firmly on a fingernail or toenail for 5 seconds, then release. Normal: color returns in <2 seconds. >3 seconds suggests impaired peripheral perfusion — consider dehydration, heart failure, or peripheral arterial disease.

Carotid auscultation: Using the diaphragm, auscultate each carotid artery for bruits (turbulent flow sounds). A bruit suggests carotid stenosis ≥50%. Do not compress the carotid during auscultation in older patients with suspected atherosclerosis.

Pitting edema grading

The following scale (aligned with NPUAP/wound care standards) is the most clinically consistent — many nursing resources use an inconsistent 0–4 scale that mixes 2 mm and 4 mm increments. Use this table:

Assess edema bilaterally. Bilateral pitting edema in dependent areas (ankles, sacrum in bed-bound patients) = systemic cause (heart failure, hypoalbuminemia, venous insufficiency). Unilateral edema = consider DVT, lymphedema, or local obstruction.

Ankle-brachial index (ABI) — awareness, not calculation: Nurses in vascular and wound care settings may perform ABI screening using a handheld Doppler. Normal ABI is 1.0–1.4; ABI <0.9 indicates peripheral arterial disease. Values >1.4 suggest non-compressible calcified vessels (as seen in diabetes). Know the interpretation thresholds for NCLEX.

Key abnormal findings and clinical significance

Documentation language

Clear, consistent documentation enables the next clinician to understand what was found and what the baseline is.

Example 1 — Normal cardiovascular exam

“Heart rate 72 bpm, regular rhythm. S1 and S2 present, no S3, S4, murmurs, rubs, or gallops auscultated. PMI palpable at 5th ICS MCL, non-displaced. JVP estimated at 2 cm above sternal angle at 45°. No JVD. Peripheral pulses 2+ bilaterally in radial, dorsalis pedis, and posterior tibial. Capillary refill <2 seconds. No peripheral edema. Skin warm and dry.”

Example 2 — Heart failure findings

“Heart rate 98 bpm, irregular rhythm. S1 and S2 present; S3 gallop auscultated at apex with bell in left lateral decubitus position. No murmur or rub. JVP elevated at 7 cm above sternal angle; positive hepatojugular reflux. 3+ pitting edema bilateral lower extremities to mid-calf; 3+ sacral edema. Dorsalis pedis and posterior tibial pulses 1+ bilaterally. Capillary refill 3 seconds bilateral feet.”

Example 3 — New murmur

“Heart rate 84 bpm, regular rhythm. S1 and S2 present. Grade III/VI holosystolic murmur loudest at the apex, radiating to the left axilla; no thrill. No S3, S4, or rub. PMI palpated at the anterior axillary line, 6th ICS — displaced laterally. Provider notified at 14:32. 12-lead EKG obtained per order. Echocardiogram ordered.”

Example 4 — Peripheral vascular compromise

“Radial pulses 2+ bilaterally. Right dorsalis pedis and posterior tibial pulses absent to palpation; left 2+. Right foot pale and cool to mid-calf; patient reports right foot numbness. Capillary refill >4 seconds right foot, <2 seconds left foot. No pitting edema. Provider notified at 09:15 for possible acute arterial occlusion right lower extremity. Vascular surgery paged per provider order.”

NCLEX tips

1. S3 in adults = pathology; S3 in children/young adults = normal. An S3 gallop in a 65-year-old with dyspnea is heart failure until proven otherwise. In a 20-year-old athlete, it may be a normal high-flow finding.

2. S4 cannot occur in atrial fibrillation. S4 requires the atria to contract against a stiff ventricle. No P wave, no atrial kick, no S4.

3. PMI displaced laterally = LV enlargement. Displaced laterally and diffuse = dilated cardiomyopathy. The character (brief vs. sustained, focal vs. diffuse) changes the interpretation.

4. JVD + muffled heart sounds + hypotension = Beck’s triad = cardiac tamponade. Treat with urgent pericardiocentesis, not diuretics. Giving diuretics to reduce preload in tamponade will worsen hypotension.

5. Bell = low-frequency; diaphragm = high-frequency. Pressing the bell too firmly converts it to a diaphragm — you will miss S3 and S4. Apply bell with just enough pressure to seal the skin.

6. Right-sided sounds increase with inspiration. Inspiration increases venous return to the right heart. Tricuspid and pulmonic murmurs increase during inspiration (Rivero-Carvallo sign).

7. Aortic stenosis produces a late-peaking systolic murmur at the right upper sternal border, radiating to the carotids. The louder and later the peak, the more severe the stenosis.

8. Mitral regurgitation is a holosystolic murmur at the apex, radiating to the left axilla. Mitral stenosis is a diastolic rumble at the apex — heard best in left lateral decubitus with the bell.

9. Grade I–II murmurs may be functional (no structural lesion). Grade III+ murmurs always require investigation.

10. Hepatojugular reflux is a two-step sign. Sustained JVP rise >3 cm during 10–15 seconds of RUQ pressure indicates the right heart cannot handle increased venous return. A brief rise that resolves in <5 seconds is normal.

11. Pitting edema is not pathognomonic for heart failure. Bilateral edema has many causes — hypoalbuminemia, renal failure, venous insufficiency, medication side effects (calcium channel blockers). Always assess in context.

12. Capillary refill >3 seconds is significant. In context with diminished pulses and cool extremities, it points to impaired cardiac output or peripheral arterial disease.

13. Friction rub vs. pleural rub: Pericardial friction rub persists when the patient holds their breath. Pleural rub disappears with breath-holding. On NCLEX, if a scratchy sound disappears with apnea, it is pleural.

14. Fixed S2 splitting = ASD. Physiologic splitting varies with breathing (wider on inspiration). Fixed splitting that does not change with respiration is associated with atrial septal defect.

15. A4+ pulse (bounding) with widened pulse pressure suggests aortic regurgitation, hyperthyroidism, or a high-output state (fever, anemia, AV fistula).

NCLEX scenarios

Scenario 1

A nurse is assessing a 72-year-old male admitted for worsening dyspnea. On auscultation, an extra sound is heard after S2 at the apex, best detected with the bell in left lateral decubitus position. Which finding is most consistent with this assessment?

A. S4 gallop indicating decreased ventricular compliance B. Pericardial friction rub indicating pericarditis C. S3 gallop indicating volume-overloaded ventricle D. Fixed S2 split indicating atrial septal defect

Answer: C. An extra sound heard after S2 in early diastole, best heard with the bell at the apex in left lateral decubitus position, is an S3 gallop. In a 72-year-old with dyspnea, S3 indicates the ventricle is volume-overloaded — classic heart failure. S4 occurs before S1, not after S2. A friction rub is scratchy, multi-component, and heard at the left sternal border with the diaphragm. Fixed S2 splitting is best heard at the pulmonic area.

Scenario 2

A nurse palpates the PMI of a patient with a history of uncontrolled hypertension. The PMI is palpable at the anterior axillary line in the 6th ICS and is sustained throughout most of systole. Which interpretation is most accurate?

A. This is a normal finding for a patient with hypertension B. The displaced, sustained PMI suggests LV hypertrophy or enlargement C. The PMI location indicates a right ventricular heave D. The sustained character indicates low cardiac output

Answer: B. The normal PMI is at the 5th ICS, MCL, and lasts less than two-thirds of systole. A PMI displaced laterally (anterior axillary line) and sustained (throughout most of systole) indicates LV enlargement or hypertrophy — the expected consequence of chronic pressure overload from hypertension. A right ventricular heave is felt at the left sternal border as a parasternal lift, not at the MCL or lateral. Displaced, sustained PMI is not a low cardiac output sign.

Scenario 3

The nurse assesses a patient with acute chest pain and notes jugular venous distension (JVP 9 cm above sternal angle), muffled heart sounds, and a blood pressure of 82/60 mmHg. Which action is the highest priority?

A. Administer furosemide 40 mg IV to reduce preload B. Prepare for emergent pericardiocentesis C. Obtain a 12-lead EKG and notify the cardiologist in the morning D. Position the patient flat to improve venous return

Answer: B. JVD, muffled heart sounds, and hypotension constitute Beck’s triad — the classic presentation of cardiac tamponade. Pericardiocentesis (needle drainage of the pericardial sac) is the definitive treatment. Furosemide reduces preload and would worsen hypotension in tamponade. The urgency is immediate, not deferred to morning. Positioning the patient flat increases venous return but does not address the obstructive pathology.

Scenario 4

A nurse auscultates a Grade IV/VI holosystolic murmur at the left lower sternal border in a 6-week-old infant. Which additional finding would the nurse anticipate?

A. A palpable thrill at the left lower sternal border B. Physiologic S2 splitting that increases with inspiration C. An S4 gallop at the apex D. A pericardial friction rub at the left sternal border

Answer: A. A murmur graded IV/VI or higher on the Levine scale is accompanied by a palpable thrill. This murmur’s location and holosystolic timing in an infant is consistent with a ventricular septal defect (VSD). Physiologic S2 splitting is a normal finding and unrelated to the murmur. S4 requires atrial contraction against a stiff ventricle — not the expected finding in a VSD with normal ventricular compliance. A friction rub is a separate, distinct sound.

Scenario 5

The nurse applies firm pressure to the right upper quadrant of a patient with dyspnea and bilateral leg edema for 12 seconds while observing the neck veins. The JVP rises 4 cm and remains elevated throughout the maneuver. How should this finding be interpreted?

A. Normal response — transient rise is expected with abdominal pressure B. Positive hepatojugular reflux — indicates elevated right heart filling pressure C. The test is only valid if the JVP was normal before applying pressure D. A rise in JVP indicates the test should be repeated at a lower angle

Answer: B. A sustained JVP rise >3 cm during 10–15 seconds of RUQ pressure constitutes a positive hepatojugular reflux test, indicating that the right heart cannot accommodate the increased venous return — consistent with elevated right-sided filling pressures or right ventricular dysfunction. A transient rise lasting <5 seconds is the normal response. The test is valid regardless of the starting JVP level. Repeating the test at a lower angle changes baseline JVP but does not invalidate a positive finding.

Common mistakes

Forgetting the left lateral decubitus position. S3 and S4 are low-frequency, low-amplitude sounds at the apex. If you auscultate the apex with the patient supine, you will frequently miss them. Always reposition to left lateral decubitus and use the bell.

Pressing the bell too hard. The acoustic physics of the bell depend on loose skin contact. Heavy pressure stretches the skin across the bell cup and creates a functional diaphragm, eliminating the low-frequency sounds you are trying to hear.

Describing JVD without measuring JVP. “JVD present” is an incomplete finding. Document the estimated height above the sternal angle and the angle of the bed. This allows trending over time and communicates severity.

Assessing only the radial pulse. Especially in post-procedure, post-catheterization, or post-vascular surgery patients, assess all distal pulses bilaterally and document each site and amplitude. An absent dorsalis pedis may be the first sign of acute limb ischemia.

Conflating pitting edema grading scales. Multiple scales exist in clinical practice. When documenting, use the 1–4+ scale with pit depth in millimeters so the next clinician knows which scale you used and can trend accurately.

Related skills

• Head-to-toe assessment — systematic full-body assessment framework
• Abdominal assessment nursing — IPPA technique applied to the abdomen
• Heart failure nursing — clinical management when assessment reveals decompensation
• Cardiac arrhythmias nursing — EKG interpretation and arrhythmia management

Sources: Bickley, Bates’ Guide to Physical Examination and History Taking, 13th ed. (LWW, 2021); Jarvis, Physical Examination and Health Assessment, 8th ed. (Elsevier, 2020); Potter & Perry, Fundamentals of Nursing, 10th ed. (Elsevier, 2021); LeBlond et al., DeGowin’s Diagnostic Examination, 10th ed. (McGraw-Hill, 2015); StatPearls — Cardiac Murmurs, Jugular Venous Distension, Pitting Edema (NCBI, 2024).