A nurse is assessing a 65-year-old patient with a history of… | 마이메르시 MyMerci
Adult Health
문제

A nurse is assessing a 65-year-old patient with a history of hypertension. Which assessment finding would indicate normal cardiac function?

해설
A heart rate of 72 bpm with regular rhythm is within the normal adult range (60-100 bpm), indicating proper cardiac conduction and function. Other options (hypertension, S3 gallop, jugular vein distention) are abnormal findings suggesting pathology.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question assesses your ability to differentiate between normal and abnormal cardiovascular assessment findings. A patient's history of hypertension makes this particularly important, as you must identify which finding reflects normal cardiac function versus signs of potential complications like heart failure or uncontrolled hypertension.

Answer Rationale: Key Point! A heart rate of 72 beats per minute (bpm) with a regular rhythm is well within the normal adult range of 60-100 bpm. A regular rhythm indicates proper functioning of the heart's electrical conduction system (SA node, AV node, Bundle of His, Purkinje fibers). This finding, in isolation, is the only one listed that signifies normal cardiac function.

Distractor Analysis: Watch out for confusion! Option ②, a blood pressure of 160/95 mmHg, is classified as Stage 2 Hypertension. This is an abnormal finding indicating poor blood pressure control, not normal function.
Option ③, the presence of an S3 gallop, is an abnormal heart sound often referred to as a "ventricular gallop." It is associated with rapid ventricular filling and is a classic sign of heart failure (HF), especially in adults. It is never a normal finding.
Option ④, jugular vein distention (JVD) when the head of the bed is elevated to 45 degrees, indicates elevated central venous pressure (CVP). This is a key sign of right-sided heart failure or fluid overload, not normal cardiac function.

Related Concepts: This question integrates knowledge of vital signs, heart sounds, and physical assessment of the cardiovascular system. Understanding these signs is crucial for early detection of cardiac decompensation in patients with chronic conditions like hypertension.
Concept Summary
FindingNormal vs. AbnormalClinical Significance
Heart Rate & RhythmNormal: 60-100 bpm, regularIndicates proper electrical conduction.
Blood PressureAbnormal: 160/95 mmHg (Hypertension)Indicates uncontrolled BP, a risk factor for heart disease.
S3 Gallop SoundAlways abnormal in adultsAssociated with ventricular dysfunction and heart failure.
Jugular Vein Distention (JVD)Abnormal at 45° elevationSuggests right heart failure, fluid overload, or tamponade.

Side-by-Side Comparison!
AssessmentNormal FindingAbnormal Finding & Implication
Heart SoundsS1 ("lub") and S2 ("dub") onlyS3 Gallop: "Ken-tuc-ky" sound after S2; indicates HF.
S4 Gallop: "Ten-nes-see" sound before S1; indicates stiff ventricle (e.g., from HTN).
Neck Vein AssessmentJugular venous pulsation visible only when supine or at very low angles (<30°).JVD at 45°: Sign of elevated right atrial pressure. Measure vertical height (cm) above sternal angle.
Blood Pressure<120/80 mmHg (Normal)≥130/80 mmHg (Stage 1 HTN)
≥140/90 mmHg (Stage 2 HTN)

Anatomy, Physiology & Pharmacology Points The S3 sound is caused by blood rushing into a ventricle that is already stiff or overly full, causing vibration. It's a sign of systolic dysfunction. Jugular vein distention reflects backpressure from the right side of the heart into the superior vena cava. For a patient with hypertension, the goal of pharmacology (e.g., ACE inhibitors, beta-blockers) is to reduce afterload and prevent the pathological remodeling that leads to heart failure and these abnormal findings.
Memory Tips
  • Heart Sounds: "S3 follows S2, sounds like 'Kentucky' – and it's bad news for the heart in adults."
  • JVD: "If you see neck veins bulging at 45 degrees, think 'Right Heart Failure' or 'Fluid Overload.'"
  • BP Ranges: Remember "Less than 120 over 80 is great, 130-139/80-89 is Stage 1, 140+/90+ is Stage 2."

High-Frequency NCLEX Topics Differentiating normal from abnormal assessment findings is a Core NCLEX skill. You will frequently be asked to identify the "normal" finding among a list of abnormals, or to prioritize care based on an abnormal finding (e.g., S3 gallop or JVD would take priority over a slightly elevated BP in a symptomatic patient).
Watch Out for Question Variations! The same concept can be tested by: 1) Asking for the priority finding to report for a patient with heart failure (S3 or JVD). 2) Presenting a list of findings and asking which one is consistent with left-sided vs. right-sided heart failure (S3 suggests left failure, JVD suggests right failure). 3) Giving a blood pressure reading and asking you to classify it (Normal, Elevated, Stage 1, Stage 2).

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse for Mr. Johnson, a 65-year-old with a 10-year history of hypertension, admitted for dizziness. During your morning assessment, you note his vital signs and perform a focused cardiovascular exam.

Nursing Intervention Strategy: 1. Assessment: Begin with a full set of vital signs. Auscultate heart sounds at the apex (mitral area) with the bell of the stethoscope to best hear low-frequency sounds like S3. Position the patient supine, then at a 45-degree angle to assess for JVD. Measure JVD vertically from the sternal angle; normal is <3 cm. 2. Nursing Diagnosis & Planning: If you find an S3 or significant JVD, a primary nursing diagnosis might be Decreased Cardiac Output. The plan includes monitoring for worsening symptoms (dyspnea, edema), ensuring medication adherence, and fluid/sodium restriction. 3. Implementation & Evaluation: Report abnormal findings (BP of 160/95, S3, JVD) to the provider promptly. Re-evaluate after interventions (e.g., administering prescribed antihypertensives, diuretics) to see if findings improve.

Patient Safety and Precautions: Never dismiss a newly discovered S3 gallop in an adult patient—it requires immediate further evaluation. When assessing JVD, ensure the patient's head is on a pillow so the neck muscles are relaxed, and use tangential lighting to see the venous pulsation clearly.
Nursing Procedure & Medication Flow When administering antihypertensives to a patient like Mr. Johnson: Assessment First: Check BP and heart rate before giving the medication. Hold the medication and notify the provider if the systolic BP is too low (e.g., <110 mmHg) or heart rate is bradycardic, per facility policy. Monitoring: Recheck BP 1 hour after administration (or per drug peak time) to evaluate effectiveness and watch for hypotension. Education: Teach the patient to monitor their own BP at home, adhere to medications, recognize signs of HF (weight gain, swelling, shortness of breath), and follow a low-sodium diet.
A Word from Your Senior Nurse "Remember, your assessment is your superpower. That regular heart rate of 72 tells you the electrical system is ticking along nicely today. But if you hear that soft 'whoosh' of an S3 after S2, your brain should immediately flash 'heart failure.' In a patient with long-standing hypertension, finding that S3 is like finding a warning light on the dashboard—it means the engine (the heart) is starting to struggle. Catching it early through skilled assessment allows for timely intervention and can prevent a hospital admission for acute decompensated heart failure. That's the real impact of your nursing knowledge!"

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