(A) Headaches may occur after taking nitroglycerin because of vasodilation. (B) The tablets do not need to be refrigerated. The client should carry them with her. (C) The client should contact the physician if repeated doses of nitroglycerin do not relieve the discomfort. (D) Nitroglycerin tablets should be dissolved under the tongue, not swallowed.

Explanation
(A) When the severely depressed client suddenly begins to feel better, it often indicates that the client has made the decision to kill himself or herself and has developed a plan to do so. (B) Improvement in behavior is not indicative of an exacerbation of depressive symptoms. (C) Thedepressed client has a tendency for self-violence, not violence toward others. (D) Depressive behavior is not always accompanied by psychotic behavior.

Section: Questions Set B
Explanation:
(A) Protein is vital for the maintenance of muscle to aid in breathing. A high-calorie diet using higher fat than carbohydrate content is given because clients are unable to breathe off the excess CO2that is an end product of carbohydrate metabolism. (B) Inadequate nutritional status, in particular, deficiencies in vitamins A and C, decreases resistance to infection. (C) Milk does not make mucus thicker. It may coat the back of the throat and make it feel thicker. Rinsing the mouth with water after drinking milk will prevent this problem. (D) Small, frequent meals minimize a fullness sensation and reduce pressure on the diaphragm. The work of breathing and SOB are also reduced.

Section: Questions Set F
Explanation:
(A) Neomycin interferes with protein synthesis in the bacterial cell, causing bacterial death. Neomycin reduces the growth of the ammonia-producing bacteria in the intestines and is used for the treatment of hepatic coma.
(B) This choice describes the action of lactulose, another drug commonly used to decrease systemic ammonia levels. (C) Neomycin's action doesnotdecrease uptake of vitamin D to reduce serum ammonia levels. (D) Bowel irritation with diarrhea is more likely to occur with administration of lactulose rather than of neomycin.
Besides, diarrhea is a side effect of a drug, not the action of the drug.

Section: Questions Set D
Explanation:
(A) Tetralogy of Fallot is the most common cyanotic heart defect, which includes a VSD, pulmonary stenosis, an overriding aorta, and ventricular hypertrophy. The blood flow is obstructed because the pulmonary stenosis decreases the pulmonary blood flow and shunts blood through the VSD, creating a right-to-left shunt that allows deoxygenated blood the reach the systemic circulation. (B) A VSD alone creates a left-to-right shunt.
The pressure in the left ventricle is greater than that of the right; therefore, the blood will shunt from the left ventricle to the right ventricle, increasing the blood flow to the lungs. No deoxygenated blood will reach the systemic circulation. (C) In patent ductus arteriosus, the pressure in the aorta is greater than in the pulmonary artery, creating a left-to-right shunt. Oxygenated blood from the aorta flows into the unoxygenated blood of the pulmonary artery. (D) Transposition of the great arteries results in two separate and parallel circulatory systems. The only mixing or shunting of blood is based on the presence of associated lesions.