How To Check Apical Pulse | Master Heart Assessment

Hello there! It’s wonderful to connect with you today. Understanding how to assess an apical pulse is a core skill in many healthcare fields, offering a direct window into the heart’s rhythm and rate. Think of it as tuning into the heart’s own unique song.

This method provides invaluable information, often when other pulse points might be less reliable. We’ll walk through this essential technique together, step by step, ensuring you feel confident and capable.

Understanding the Apical Pulse

The apical pulse represents the actual beat of the heart itself, felt or heard at the point of maximal impulse (PMI). This is typically located over the apex of the heart, where the left ventricle is closest to the chest wall.

Unlike peripheral pulses, which are pressure waves from blood flow, the apical pulse is the direct mechanical action. It offers a true count of ventricular contractions, making it a highly accurate measurement.

To locate it, we generally look for the fifth intercostal space (the space between the fifth and sixth ribs) at the midclavicular line (an imaginary line drawn straight down from the middle of the collarbone). This specific spot is key.

Using a stethoscope, we listen for the “lub-dub” sounds, which are the closures of the heart valves. Each “lub-dub” sequence counts as one heartbeat, much like counting the beats in a musical piece.

When and Why We Assess Apical Pulse

Assessing the apical pulse is a central practice in various clinical situations. It provides a direct, unfiltered view of cardiac activity, which is not always possible with peripheral pulse checks.

This assessment is particularly useful when peripheral pulses are difficult to palpate due to poor circulation, obesity, or edema. It ensures we get an accurate heart rate even in challenging circumstances.

It’s also the preferred method for certain patient populations, especially infants and young children, where radial pulses can be rapid and challenging to count precisely. For these tiny hearts, the apical approach is clearer.

We often use the apical pulse to detect and assess cardiac dysrhythmias, which are irregularities in heart rhythm. Listening directly reveals the nuances of these patterns.

Key Indications for Apical Pulse Assessment

• When a peripheral pulse is irregular, weak, or absent.
• For infants and children up to 7 years of age.
• Before administering certain cardiac medications that affect heart rate.
• To assess for pulse deficit (a difference between apical and radial pulse rates).
• During a complete cardiovascular assessment.

Here is a quick reference for common scenarios requiring an apical pulse check:

Scenario	Reason for Apical Pulse
Irregular Peripheral Pulse	Provides a true ventricular rate, revealing skipped or weak beats.
Infants & Young Children	Peripheral pulses are often too rapid and faint for accurate counting.
Cardiac Medications	Essential for pre-administration assessment of heart rate baseline.
Suspected Dysrhythmia	Offers direct auscultation of heart sounds and rhythm patterns.

Preparing for an Accurate Apical Pulse Assessment

Proper preparation makes all the difference for an accurate apical pulse reading. It ensures both your comfort and the patient’s, setting the stage for clear auscultation.

First, gather your equipment: a stethoscope with a clean diaphragm and earpieces. A watch with a second hand or a digital timer is also essential for precise timing.

Next, ensure the environment is quiet and warm. Unwanted noise can interfere with hearing the subtle heart sounds, and a cold room might cause shivering, making assessment harder.

Explain the procedure to the individual, even if they are non-verbal, to minimize anxiety and encourage cooperation. A calm patient allows for a clearer assessment.

Position the individual appropriately. A supine or semi-Fowler’s position is ideal, as it brings the heart closer to the chest wall. If necessary, gently lift or move breast tissue to expose the apical area.

Warm the stethoscope diaphragm in your hand before placing it on the skin. A cold diaphragm can startle the individual and cause muscle tension, hindering sound transmission.

How To Check Apical Pulse: The Step-by-Step Method

This process is straightforward, but precision is key. Follow these steps to ensure you get a reliable and accurate reading of the apical pulse.

1. Perform Hand Hygiene: Always begin by washing your hands thoroughly or using an alcohol-based hand rub. This maintains infection control standards.
2. Gather Equipment: Ensure your stethoscope and a watch with a second hand are readily available. Check your stethoscope for proper function.
3. Position the Individual: Have the person lie supine or in a semi-Fowler’s position. This exposes the chest area for optimal access to the apical site.
4. Locate the Apical Impulse:
   • Identify the suprasternal notch, then find the angle of Louis (the bony ridge where the manubrium joins the sternum).
   • Slide your fingers down from the angle of Louis to the second intercostal space.
   • Continue moving your fingers down the left side of the sternum, counting the intercostal spaces until you reach the fifth intercostal space.
   • Move your fingers laterally (towards the left armpit) along the fifth intercostal space to the midclavicular line. This is the typical location of the apical impulse.
5. Place the Stethoscope: Firmly place the diaphragm of your warmed stethoscope directly over the identified apical impulse. Apply enough pressure to ensure skin contact without causing discomfort.
6. Listen and Count: Listen carefully for the “lub-dub” sounds. Each “lub-dub” represents one beat.
7. Time the Count:
   • If the rhythm is regular, count the beats for 30 seconds and multiply by two to get the beats per minute (BPM).
   • If the rhythm is irregular, or for initial assessments, count the beats for a full 60 seconds. This provides a more accurate representation of the irregular pattern.
8. Assess Rhythm and Quality: While counting, note whether the rhythm is regular or irregular. Also, pay attention to the strength and clarity of the heart sounds.
9. Remove Stethoscope and Document: Once the count is complete, remove the stethoscope, perform hand hygiene again, and immediately document your findings.

Interpreting Apical Pulse Findings

After you’ve counted the beats, the next step is to interpret what those numbers and sounds mean. This helps paint a complete picture of the individual’s cardiac status.

The normal adult apical pulse rate typically falls between 60 and 100 beats per minute. Rates outside this range warrant further assessment and consideration.

A rate below 60 BPM is termed bradycardia, while a rate above 100 BPM is tachycardia. Both can be normal variations in some individuals, but they can also signal underlying conditions.

Beyond the rate, the rhythm is equally telling. A regular rhythm means the beats occur at consistent intervals. An irregular rhythm suggests variations in these intervals, which could be benign or indicate a dysrhythmia.

The quality of the heart sounds also offers clues. Are they clear and distinct, or muffled? Are there any extra sounds or murmurs? These observations add depth to your assessment.

Accurate documentation is the final, essential step. Record the rate, rhythm, and any other observations clearly. This ensures continuity of care and provides a baseline for future comparisons.

Here’s a quick guide to interpreting apical pulse rates:

Pulse Rate (BPM)	Interpretation	Consideration
Below 60	Bradycardia	Can be normal for athletes; may indicate cardiac issues or medication effects.
60-100	Normal Range	Typical resting heart rate for healthy adults.
Above 100	Tachycardia	May be due to stress, dehydration, fever, or underlying cardiac conditions.

How To Check Apical Pulse — FAQs

Why is the apical pulse sometimes preferred over a radial pulse?

The apical pulse provides a direct count of the heart’s ventricular contractions, offering the most accurate heart rate. It’s preferred when peripheral pulses are weak, irregular, or difficult to feel, ensuring a precise measurement. This direct assessment helps avoid inaccuracies that can arise from inconsistent peripheral blood flow.

What is a pulse deficit, and how do I check for it?

A pulse deficit occurs when the apical pulse rate is higher than the radial pulse rate, indicating that some heartbeats are not strong enough to create a palpable peripheral pulse. To check for it, two clinicians simultaneously count the apical and radial pulses for a full minute. The difference between these two counts is the pulse deficit.

Can I check my own apical pulse?

While technically possible, checking your own apical pulse can be challenging due to the need for precise stethoscope placement and a quiet environment. It requires practice and familiarity with anatomical landmarks. For accurate and reliable readings, especially when concerned about heart health, it is best performed by a trained healthcare professional.

What should I do if I find an irregular apical pulse?

If you detect an irregular apical pulse, document your findings accurately, noting the rate and the pattern of irregularity. This observation should be reported to a healthcare professional promptly. An irregular pulse can sometimes be a normal variation, but it can also signal an underlying cardiac condition that requires medical evaluation.

How does age affect apical pulse rates?

Age significantly influences normal apical pulse rates. Infants and young children typically have much faster normal rates (e.g., 100-160 BPM for newborns) compared to adults. As individuals age, the resting heart rate generally decreases. Understanding these age-related variations is central for accurate interpretation of apical pulse readings.