The nurse is auscultating heart sounds on a client and hears an extra sound late in diastole, just before the S1. How should the nurse document this finding?
The third heart sound (S3)
A friction rub
The fourth heart sound (S4)
A split second heart sound S2
The Correct Answer is A
A. The third heart sound (S3):
The third heart sound (S3) is an abnormal heart sound that occurs during early diastole, immediately after S2 (the second heart sound). It is caused by the rapid filling of the ventricles and is often associated with conditions like heart failure. In heart failure, the ventricles become stiff, causing vibrations that produce the S3 sound.
B. A friction rub:
A friction rub is a high-pitched, scratchy sound heard during both systole and diastole. It is caused by the rubbing together of inflamed pericardial layers (pericarditis) and is usually heard best at the left lower sternal border. Friction rubs can indicate pericardial inflammation and are often heard in conditions such as pericarditis or after a myocardial infarction.
C. The fourth heart sound (S4):
The fourth heart sound (S4) occurs late in diastole, just before S1, and is caused by atrial contraction. It is associated with increased resistance to ventricular filling, often due to conditions like hypertension or aortic stenosis. The S4 sound is heard as a low-pitched "atrial gallop."
D. A split second heart sound S2:
The second heart sound (S2) represents the closure of the aortic and pulmonic valves. Normally, S2 has two components: A2 (aortic valve closure) and P2 (pulmonic valve closure). A split S2 occurs when A2 and P2 do not close simultaneously. A physiological split S2 is common during inspiration and occurs due to delayed closure of the pulmonic valve. An abnormal or fixed split S2 can indicate underlying heart conditions such as atrial septal defect (ASD) or right bundle branch block (RBBB).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Xiphoid process:
The xiphoid process is a small, cartilaginous extension at the inferior end of the sternum (breastbone). It does not play a role in the bifurcation of the trachea.
B. Suprasternal notch:
The suprasternal notch, also known as the fossa jugularis sternalis or jugular notch, is the visible dip in the superior part of the manubrium of the sternum between the clavicular notches. It is an important anatomical landmark for assessing the position of the trachea during emergency situations but is not the location of tracheal bifurcation.
C. Sternal angle (Angle of Louis):
The sternal angle, or Angle of Louis, is a palpable notch located at the articulation of the manubrium and the body of the sternum. It is where the second rib attaches and serves as a useful reference point for counting ribs and locating internal structures like the tracheal bifurcation.
D. Costal angle:
The costal angle is the acute angle formed by the junction of the costal margins at the xiphoid process. It is not related to the tracheal bifurcation.
Correct Answer is ["C","D"]
Explanation
A. Increased temperature: Fluid overload typically doesn't cause an increased temperature. Infections or other inflammatory processes are more likely causes of elevated body temperature.
B. Increased hematocrit: Fluid overload usually results in dilution of blood components, leading to a decreased hematocrit (lower concentration of red blood cells in the blood). An increased hematocrit is not a typical finding in fluid overload.
C. Blood pressure 180/100: Elevated blood pressure can be associated with fluid overload, especially if the overload is chronic. This is a correct assessment finding that requires intervention and monitoring.
D. Respiratory rate 32: An increased respiratory rate can be a sign of respiratory distress, which may occur in severe cases of fluid overload, especially if it leads to pulmonary edema. This is a correct assessment finding that requires intervention and further evaluation.
E. Heart rate 120 bpm: An increased heart rate can be a compensatory mechanism in response to fluid overload, especially if the heart is trying to maintain cardiac output. However, this heart rate alone is not specific enough to confirm fluid overload. Other signs and symptoms, such as edema, increased blood pressure, and respiratory distress, are more indicative of fluid overload.
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