A nurse is performing a cardiac assessment on a client and auscultates an S3 sound. The nurse should recognize that this sound represents which of the following heart conditions?
Closure of pulmonic valve
Closure of the mitral valve
Ventricular gallop
Atrial gallop
The Correct Answer is C
Ventricular gallop is another name for the S3 sound, which is a low-pitched sound heard at the end of diastole, just after the S2 sound. It is caused by the rapid filling of the ventricles and the vibration of the ventricular walls.
Closure of the pulmonic valve is one of the components of the S2 sound, which is a high-pitched sound heard at the end of the systole, just before the S1 sound. It is caused by the closure of the semilunar valves (pulmonic and aortic).
Closure of the mitral valve is one of the components of the S1 sound, which is a high-pitched sound heard at the beginning of systole, just after the S2 sound. It is caused by the closure of the atrioventricular valves (mitral and tricuspid).
d. Atrial gallop is another name for the S4 sound, which is a low-pitched sound heard at the end of diastole, just before the S1 sound. It is caused by atrial contraction and increased resistance to ventricular filling.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
- Place a pillow under the client's head.
The nurse should place a pillow under the client's head to protect it from injury during the seizure. The nurse should also loosen any tight clothing, remove any objects that could harm the client, and maintain a patent airway.
- Gently restrain the client's extremities is wrong because it can cause injury to the client or the nurse. The nurse should not restrain or interfere with the client's movements during the seizure, but rather ensure a safe environment and observe the seizure activity.
- Apply a face mask for oxygen administration is wrong because it can be dislodged by the client's movements and pose a choking hazard. The nurse should not atempt to insert anything into the client's mouth or nose during the seizure, but rather provide oxygen by nasal cannula after the seizure if needed.
Insert a padded tongue blade into the client's mouth is wrong because it can damage the client's teeth, gums, or tongue, or cause aspiration or airway obstruction. The nurse should not atempt to insert anything into the client's mouth or nose during the seizure, but rather turn the client to a side-lying position after the
Correct Answer is D
Explanation
Choice A reason:
Administering an anticholinesterase medication is not the primary intervention during a myasthenic crisis. While these medications can improve muscle strength in myasthenia gravis, they are not sufficient in the event of a crisis.
Choice B reason:
Pursed lip breathing is a technique used to manage dyspnea but is not adequate for the acute management of a myasthenic crisis, which can involve respiratory muscle paralysis.
Choice C reason:
Vasoconstrictors are not used in the treatment of myasthenic crisis. This condition is not related to vascular issues but to neuromuscular transmission failure leading to respiratory failure.
Choice D reason:
Mechanical ventilation is the correct intervention as it provides the necessary respiratory support when the patient's respiratory muscles are too weak to maintain adequate ventilation.
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