Explanation/Reference:
Explanation:
(A) Nausea is more difficult to control if antiemetics are withheld until nausea is experienced. (B) Antiemetics should be given prophylactically at the beginning of chemotherapy and continued on an around-the-clock basis to prevent nausea. (C) Combinations of antiemetics give the best control for nausea by blocking various causes of nausea induced by chemotherapy. (D) Antiemetics should be given around the clock during the course of chemotherapy. This prevents nausea from developing and prevents anticipatory nausea during subsequent chemotherapy administrations.

Section: Questions Set F
Explanation:
(A) Sexual activity should be delayed until cleared by the client's physician. (B) Although many men experience retrograde ejaculation following prostate surgery, potency is seldom affected. (C) Although the client may experience retrograde ejaculation, it will not limit his ability to engage in sexual intercourse. (D) Although the client should obtain clearance from his physician before resuming sexual activity, this statement does not give the client any information or reassurance about future sexual activity or potency that could decrease his anxiety.

Explanation
(A) The AIDS virus cannot be transmitted to the donor through the blood donation procedure. (B) The test for the AIDS virus is not absolutely foolproof; therefore, it is not wise for a person with known risk factors to donate blood. (C) It takes time for antibodies to the AIDS virus to develop. An infected individual could donate contaminated blood without it testing positive for the virus. (D) For reasons of confidentiality, information about individuals infected with AIDS is not made public.

(A) Dyspnea is a common complaint during the third trimester owing to the increasing size of the uterus and the resulting pressure against the diaphragm. (B) Edema of the face, hands, or pitting edema after 12 hours of bed rest may be indicative of preeclampsia and would be of great concern to the healthcare provider. (C) An increase in heart rate of 10-15 bpm is a normal physiological change in pregnancy due to the multiple hemodynamic changes. (D) A hematocrit value of 39% is within the normal range. A value <35% would indicate anemia.

Explanation/Reference:
Explanation:
(A) Anaerobic metabolism results because the decreased blood supply to the myocardium causes a release of lactic acid. Lactic acid is an irritant to the myocardial neural receptors, producing chest pain. (B) Chest pain is caused by a decrease in the O2 supply to the myocardial cells. Treatment modalities for chest pain are aimed toward increasing the blood flow through coronary arteries. (C) Chest pain causes an increase in the stimulation of the sympathetic nervous system. This stimulation increases the heart rate and blood pressure, causing an increase in myocardial workload aggravating the chest pain. (D) Chest pain and anxiety cause increased secretion of catecholamines by stimulating the sympathetic nervous system. This stimulation increases chest pain by increasing the workload of the heart.