A client asks the nurse to describe what causes a murmur. What would be the correct response by the nurse?
"Poor electric impulse conduction through the heart
"Turbulent blood flow through the heart valves"
"Enlargement of the left ventricle."
"Weak contraction of the atria."
"Long-term systemic hypertension."
The Correct Answer is B
A. Poor electrical impulse conduction may lead to arrhythmias but does not cause a murmur.
B. A heart murmur is caused by turbulent blood flow, often through narrowed or leaking valves, creating an abnormal heart sound.
C. Left ventricular enlargement can contribute to other cardiac issues but does not directly cause murmurs.
D. Weak atrial contractions may lead to decreased cardiac output but not necessarily to a murmur.
E. While hypertension can affect the heart, it is not the direct cause of a murmur.
Free Nursing Test Bank
- Free Pharmacology Quiz 1
- Free Medical-Surgical Quiz 2
- Free Fundamentals Quiz 3
- Free Maternal-Newborn Quiz 4
- Free Anatomy and Physiology Quiz 5
- Free Obstetrics and Pediatrics Quiz 6
- Free Fluid and Electrolytes Quiz 7
- Free Community Health Quiz 8
- Free Promoting Health across the Lifespan Quiz 9
- Free Multidimensional Care Quiz 10
View Related questions
Correct Answer is B
Explanation
A. Decreased lung sounds on expiration are common in COPD patients due to airway obstruction but do not necessarily indicate an acute issue.
B. Respirations are 40 breaths/minute is a critical finding, as this rapid respiratory rate suggests significant respiratory distress or worsening hypoxemia, which needs immediate intervention to prevent further complications.
C. An anterior-posterior diameter ratio of 1:1 (barrel chest) is a common finding in advanced COPD but does not indicate acute worsening.
D. Hyperresonance to percussion is typical in patients with COPD due to air trapping and does not suggest an immediate emergency.
E. Decreased tactile fremitus may occur in COPD due to increased air trapping but is not an urgent finding requiring immediate reporting.
Correct Answer is C
Explanation
A. The closure of the pulmonic and mitral valves corresponds to heart sound S1, not S2.
B. The tricuspid and mitral valves close with S1.
C. Heart sound S2 represents the closure of the aortic and pulmonic valves, signaling the end of systole and the beginning of diastole.
D. The mitral valve closes with S1, not S2.
E. The pulmonic and tricuspid valves do not correspond with S2.