The nurse is evaluating the medical prescription of carvedilol 6.25 mg PO daily for a client with a history of unstable angina. Which of the following reflects that the medication's action has been effective?
Urine output 50 mL per hour
Heart rate 60 beats/minute
Heart rhythm regular
Blood pressure 120/90
The Correct Answer is B
A. While it may have some impact on kidney function indirectly through its effects on blood pressure and heart function, urine output is not the primary parameter used to assess the effectiveness of carvedilol in a patient with a history of unstable angina.
B. Carvedilol, as a beta-blocker, helps reduce heart rate by blocking the effects of adrenaline on the heart. In unstable angina, lowering the heart rate can reduce myocardial oxygen demand, which is beneficial in managing ischemic symptoms
C. Carvedilol primarily affects heart rate and blood pressure but doesn't directly regulate heart rhythm. However, in patients with certain cardiac conditions, like heart failure or left ventricular dysfunction after a heart attack, carvedilol can sometimes help to stabilize heart rhythm indirectly by reducing stress on the heart.
D. Carvedilol is also effective in reducing blood pressure, which is beneficial in patients with unstable angina, as it decreases the workload on the heart and the oxygen demand of the myocardium. A blood pressure reading of 120/90 is within the normal range for an adult and indicates good control of blood pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["D","E"]
Explanation
D. Prophylactic antibiotics are often administered before surgery for appendicitis to reduce the risk of postoperative infection, particularly in cases of suspected or confirmed appendiceal perforation.
E. Keeping the client NPO (nothing by mouth) is a standard precaution before surgery to prevent aspiration of gastric contents during anesthesia induction and to reduce the risk of surgical complications.
A. Applying heat to the abdomen can potentially worsen inflammation and increase the risk of appendiceal rupture.
B. Ambulation may exacerbate the pain and increase the risk of complications, such as appendiceal rupture.
C. Administering a cleansing enema in preparation for surgery may be appropriate in some cases to help prepare the bowel for surgery, particularly if there is concern about bowel obstruction or to reduce the risk of contamination during surgery.
Correct Answer is D
Explanation
D. The initial clinical manifestation associated with an obstruction in the duodenum is crampy abdominal pain, wavelike, and colicky. This discomfort occurs due to the blockage of the small intestine, leading to spasms and pain as the body tries to move contents past the obstruction.
A. Severe abdominal distention and cramping can occur with various gastrointestinal conditions, including an obstruction in the duodenum. However, this manifestation is not specific to duodenal obstruction and can occur with obstructions at other locations in the gastrointestinal tract.
B. Vomiting of fecal material, known as feculent vomiting, is a hallmark sign of a complete obstruction in the lower gastrointestinal tract.
C. Ribbon-like stools are more commonly associated with conditions affecting the lower gastrointestinal tract, such as colorectal cancer or irritable bowel syndrome (IBS).
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