A child with congestive heart failure is started on Captopril because its primary effect is
slows the heart rate thus increasing diastolic filling time
increases urine output thus decreasing pulmonary congestion
decreases the afterload thus decreasing the workload on the heart
increases serum potassium thus improving cardiac performance
The Correct Answer is C
Choice A reason: Slowing the heart rate does not increase diastolic filling time. Diastolic filling time is the time during which the ventricles are relaxed and filling with blood. Slowing the heart rate would decrease the cardiac output and worsen the heart failure.
Choice B reason: Increasing urine output does decrease pulmonary congestion, but it is not the primary effect of Captopril. Captopril is an angiotensin-converting enzyme (ACE) inhibitor, which blocks the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor. This reduces the blood pressure and the afterload on the heart. Diuretics are the drugs that increase urine output and reduce fluid overload.
Choice C reason: This is the correct choice. Decreasing the afterload means reducing the resistance that the heart has to overcome to pump blood to the body. This lowers the blood pressure and the workload on the heart, which improves the cardiac function and reduces the symptoms of heart failure.
Choice D reason: Increasing serum potassium does not improve cardiac performance. In fact, high levels of potassium can cause cardiac arrhythmias and cardiac arrest. Captopril can cause hyperkalemia (high potassium) as a side effect, which is why patients on this drug need to monitor their potassium levels and avoid potassium supplements or salt substitutes.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: This statement is correct, as hydrostatic reduction of telescoped bowel with an air or saline enema is the preferred treatment for intussusception, which is a condition where a segment of the intestine slides into another segment, causing obstruction, inflammation, and ischemia. The enema can help to push the invaginated bowel back to its normal position, relieve the obstruction, and restore the blood flow. The procedure is safe, effective, and minimally invasive, and can avoid the need for surgery.
Choice B reason: This statement is incorrect, as hydrostatic reduction of telescoped bowel with an air or saline enema is not a false statement, but a true one. The nurse should be aware of the indications, contraindications, and complications of this procedure, and monitor the child's vital signs, abdominal distension, bowel sounds, and stool output before, during, and after the enema. The nurse should also educate the parents about the signs and symptoms of recurrence, such as abdominal pain, vomiting, or bloody stools.
Correct Answer is B
Explanation
Choice A reason: This statement is incorrect, as letting the child feed herself finger foods is not a risk factor for aspiration, but a way to promote self-feeding skills, independence, and appetite. The nurse should encourage the parents to offer the child a variety of soft, bite-sized, and nutritious foods, such as cooked vegetables, fruits, cheese, or bread, and to supervise the child during meals.
Choice B reason: This statement is correct, as giving whole milk is recommended for children between 1 and 2 years old, as it provides adequate fat, protein, calcium, and vitamin D for their growth and development. The nurse should advise the parents to give the child about 16 to 24 ounces of whole milk per day, and to avoid low-fat or skim milk until the child is 2 years old.
Choice C reason: This statement is incorrect, as delaying the introduction of foods which may cause allergies is not necessary or beneficial for the prevention of food allergies in children. The nurse should inform the parents that there is no evidence that avoiding certain foods, such as eggs, peanuts, or fish, can reduce the risk of food allergies, and that introducing these foods early, around 6 months of age, may actually prevent or reduce the severity of food allergies.
Choice D reason: This statement is incorrect, as transitioning to 1% milk is not advisable for children under 2 years old, as it does not provide enough fat and calories for their growth and development. The nurse should explain to the parents that low-fat or skim milk is not suitable for young children, as they need more fat for their brain and nervous system development, and that switching to 1% milk should only be done after consulting with the doctor.
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