Key Takeaways for NursesThe apical pulse is most commonly located at the left fifth intercostal space at or just medial to the midclavicular line in adults, and at the fourth intercostal space in children younger than seven years. Accurate identification requires starting at the sternal angle, counting ribs carefully, and aligning with the true midpoint of the clavicle rather than relying on visual cues. Proper patient positioning, including the left lateral recumbent position when needed, can improve detection. Consistent, precise landmarking supports accurate heart rate and rhythm assessment, promotes medication safety, and strengthens overall cardiovascular evaluation across clinical settings. Assessing the apical pulse is a foundational clinical skill for nurses in every practice setting. Whether administering cardiac medications, evaluating an irregular rhythm, or completing a focused cardiovascular assessment, accurate apical pulse measurement supports safe, evidence-based care. |
This article reviews what the apical pulse is, where it is located, how and why it is measured, the normal range, variations in the apex beat, preparation steps, and common peripheral pulse sites.
What is the apical pulse?
The apical pulse is the heart rate obtained by auscultating the apex of the heart with a stethoscope. It reflects the actual number of heartbeats per minute by directly listening to the opening and closing of the heart valves, commonly described as the “lub-dub” sounds, S1 and S2 (see this video for location & sound).
Unlike peripheral pulses, which are palpated at arterial sites, the apical pulse measures heart contractions at their source. The American Heart Association (AHA) and standard nursing assessment references identify apical auscultation as the most accurate method when precise heart rate assessment is required, particularly in patients with irregular rhythms or those receiving cardiac medications.
Where Is the Apical Pulse Located?
The apical pulse is auscultated at the cardiac apex. In adults, this location is typically found at the left fifth intercostal space at or just medial to the midclavicular line. This area corresponds to the point of maximal impulse.
To locate the site:
- Identify the sternal angle
- Move laterally to the second rib/intercostal space
- Count down to the fifth intercostal space
- From there, move to the midclavicular line on the left side of the chest
In infants and young children, the point of maximal impulse is often located at the fourth intercostal space because of anatomical differences.
Note: the apical pulse cannot be found on all patients. For patients with larger chests or obese patients, the apical pulse may not be able to be identified.
Why is the apical pulse measured?
Nurses measure the apical pulse in situations where accuracy is essential. This includes before administering medications that affect heart rate, such as digoxin, beta blockers, and calcium channel blockers. It is also indicated when a peripheral pulse is irregular, weak, or difficult to palpate, and when assessing infants and young children, whose peripheral pulses may be less reliable.
Apical assessment is especially important when monitoring patients with suspected or confirmed arrhythmias. It is also used to determine a pulse deficit, which is the difference between the apical and radial pulse rates and may indicate ineffective ventricular contractions.
How to take an apical pulse
Accurate technique supports reliable findings and patient safety.
Begin with hand hygiene and proper patient identification. Explain the procedure and provide privacy. Position the patient supine or sitting upright, and expose the chest appropriately while maintaining dignity.
Locate the fifth intercostal space at the left midclavicular line. Clean the diaphragm of the stethoscope and place it firmly against the skin, avoiding clothing. Count each “lub-dub” as one beat for a full 60 seconds. Counting for one full minute is recommended, particularly if the rhythm is irregular.
While counting, assess both rate and rhythm. Document the heart rate in beats per minute, describe whether the rhythm is regular or irregular, and note any additional sounds such as murmurs.
Normal apical pulse range
For adults, the normal resting heart rate is 60 to 100 beats per minute, according to the AHA. Rates outside this range may still be normal depending on the individual and clinical context.
Normal ranges vary by age. Newborns typically have a resting heart rate of approximately 100 to 160 beats per minute. Infants often range from 100 to 150 beats per minute, and children generally range from 70 to 120 beats per minute. Well-conditioned athletes may have resting heart rates below 60 beats per minute due to increased cardiovascular efficiency.
Clinical interpretation should always consider the patient’s age, health status, and current condition.
What can the apical pulse reveal?
Assessment of the apical pulse provides insight into cardiovascular function.
Tachycardia: >100 BPM
Tachycardia refers to a heart rate above 100 beats per minute in adults. It may be associated with fever, dehydration, anxiety, anemia, hypovolemia, heart failure, or certain arrhythmias.
Bradycardia: <60 BPM
Bradycardia refers to a heart rate below 60 beats per minute in adults. It may be normal in athletes or during sleep, but it can also indicate conduction abnormalities or medication effects.
Atrial fibrillation or premature contractions
An irregular rhythm may suggest conditions such as atrial fibrillation or premature contractions. When the apical rate exceeds the radial rate, a pulse deficit may be present. This finding can indicate that not all ventricular contractions are producing effective peripheral perfusion.
Types of apex beat
The apex beat refers to the palpable cardiac impulse at the point of maximal impulse. Its characteristics can provide additional diagnostic information.
A normal apex beat is brief, localized, and occurs early in systole. A displaced apex beat, which is shifted laterally or downward, may indicate left ventricular enlargement. A sustained or heaving impulse can be associated with pressure overload conditions, such as longstanding hypertension or aortic stenosis. A hyperdynamic apex, characterized by increased amplitude, may occur in high-output states such as anemia or hyperthyroidism.
Abnormal findings warrant further cardiovascular evaluation and clinical correlation.
What to do before assessing the apical pulse
Preparation supports accuracy. Review the patient’s medical history, current diagnoses, and medications, particularly those affecting cardiac function. Assess recent vital signs and ensure the patient has rested for at least five minutes before measurement. Reducing environmental stimuli can help avoid artificially elevated readings.
Clinical judgment should guide whether additional assessments, such as blood pressure or oxygen saturation, are needed at the same time.
Common pulse sites
In addition to the apical site, nurses assess peripheral pulses at several locations. The temporal pulse is located at the temple. The carotid pulse is found along the medial edge of the sternocleidomastoid muscle in the neck. The brachial pulse is palpated in the antecubital space, and the radial pulse is located on the thumb side of the wrist.
Lower-extremity pulses include the femoral pulse below the inguinal ligament, the popliteal pulse behind the knee, the posterior tibial pulse behind the medial malleolus, and the dorsalis pedis pulse on the top of the foot.
Each site offers information about perfusion and circulatory status, but when precise cardiac rate and rhythm assessment is required, the apical pulse remains the most reliable method.
Common pulse sites at a glance:
- Temporal pulse: found at the temple
- Carotid pulse: along the medial edge of the sternocleidomastoid muscle in the neck
- Brachial pulse: palpated in the antecubital space (or cubital fossa)
- The cubital fossa is the triangular-shaped depression over the anterior aspect of the elbow
- Radial pulse: thumb side of the wrist
- Femoral pulse: below inguinal ligament
- Popliteal pulse: behind the knee
- Posterior tibial pulse: behind the medial malleolus
- Dorsalis pedis pulse: on the top of the foot
Clinical significance for nurses
The apical pulse is more than a routine vital sign. It is a direct assessment of cardiac activity that informs medication administration, detects arrhythmias, and supports early recognition of clinical deterioration.
Maintaining competency in apical pulse assessment strengthens patient safety and reinforces high-quality nursing practice across care settings.
