Explanation
(A) Decreased stroke volume and blood pressure will occur secondary to decreased diastolic filling. (B) Tachycardia primarily decreases diastole; systolic time changes very little. (C) Contractility decreases owing to the decreased filling time and decreased time for fiber lengthening. (D) Decreased O2 supply due to decreased time for filling of the coronary arteriesincreases ischemia and infarct size. Tachycardia primarily robs the heart of diastolic time, which is the primary time for coronary artery filling.

Explanation/Reference:
Explanation:
(A) Mastitis is a bacterial inflammation of the breast tissue found primarily in breast-feeding mothers. The bacteria usually enter the breast through a cracked nipple, or the infection results from stasis of milk behind a blocked duct. (B) With breast engorgement during breast-feeding, there may be marked breast pain. This is not necessarily a sign of infection. (C) Women may become ill during breast-feeding with other bacterial or viral infections that are not related to mastitis. (D) Improper care of the nipples or improper positioning of the infant during breastfeeding may result in cracked or sore nipples.

Explanation/Reference:
Explanation:
(A) This meal choice provides more of the vitamins A, D, and K than of vitamin C (B) This meal choice provides more of the vitamins A, B12, and D than of vitamin C (C) This meal choice provides more of the vitamins A, B1 (thiamine), niacin, and microminerals than of vitamin C. (D) This meal choice provides foods rich in vitamin C, which are essential in tissue healing.

(A)
The client is not able to sit for long periods. Forcing her to remain at the table will increase her anxiety and cause her to become hostile. (B) This action will not ensure that the client eats what is ordered. Dietary orders are not within the nurse's scope of practice.
(C)
Providing finger foods increases the likelihood of eating for hyperactive persons. They may be eating "on the run." (D) These clients are not suspicious of the food or insecure in moving about the unit alone.

Section: Questions Set G
Explanation:
(A) Thioridazine (an antipsychotic drug), lithium (an antimanic drug), and benztropine (an antiparkinsonism agent) are generally administered to treat schizophrenic and bipolar disorders. (B) Atropine (a cholinergic blocker), sodium brevitol (a shortacting anesthetic), and succinylcholine (a neuromuscular blocker) are administered either before or during ECT to coun teract bradycardia and to provide anesthesia and total muscle relaxation. (C) These are electrolyte substances administered to correct fluid and electrolyte imbalances in the body. (D) Carbamazepine (an anticonvulsant), haldoperidol (an antipsychotic), and trihexyphenydyl (an antiparkinsonism agent) are usually administered in psychiatric settings to control problems associated with psychotic behavior.