Correct Answer: B

Rationale: The correct instrument to assess a murmur while auscultating heart sounds is the bell of the stethoscope. An electrocardiogram is used to measure the heart's electrical activity, not to assess murmurs. Palpation with the nurse's palm of the hand is a method to assess pulses or textures, not heart murmurs. The diaphragm of the stethoscope is typically used for high-pitched sounds like breath, bowel, and normal heart sounds, whereas the bell is more suitable for soft, low-pitched sounds such as murmurs or extra heart sounds.

Correct Answer: D

Rationale: Postoperative nursing care after a cholecystectomy focuses on preventing respiratory complications due to the surgical incision being high in the abdomen, which impairs coughing and deep breathing. Turning, coughing, and deep breathing every 2 hours help prevent respiratory complications, such as pneumonia. While choices A, B, and C are also important aspects of postoperative care, they are not as high a priority as ensuring proper ventilation and respiratory function in the immediate postoperative period.

Correct Answer: B

Rationale: The correct instrument to assess a murmur while auscultating heart sounds is the bell of the stethoscope. An electrocardiogram is used to measure the heart's electrical activity, not to assess murmurs. Palpation with the nurse's palm of the hand is a method to assess pulses or textures, not heart murmurs. The diaphragm of the stethoscope is typically used for high-pitched sounds like breath, bowel, and normal heart sounds, whereas the bell is more suitable for soft, low-pitched sounds such as murmurs or extra heart sounds.

Correct Answer: D

Rationale: When assessing a patient experiencing significant shortness of breath, it is crucial to prioritize the evaluation of areas directly related to the problem. Having the patient lie down may exacerbate the breathing difficulty. Therefore, the nurse should focus on examining the body areas pertinent to the issue, such as the respiratory and cardiac systems. Completing the rest of the assessment can be deferred until after addressing the immediate problem. Obtaining a complete history or involving family members should come after addressing the acute issue to ensure the patient's safety and comfort.

Correct Answer: C

Rationale: The concept of a cultural taboo involves practices that are forbidden or avoided within a particular culture. Refusing to accept blood products as part of treatment is a clear example of a cultural taboo, as some cultures or religions prohibit the use of blood products for medical purposes. This practice is deeply rooted in cultural beliefs and traditions. The other choices provided do not directly relate to cultural taboos. Trying prayer before seeking medical help, believing illness is a punishment of sin, and stating that a child's birth defect is the result of parents' sins are beliefs or actions based on religious or personal beliefs, but they do not specifically represent cultural taboos.