Explanation
(A) Eating chalk is not related to calcium and its absorption. (B) Poor nutritional habits may result in increased discomfort during premenstrual days, but this is not a primary reason for the client to stop eating chalk.
Premenstrual discomfort has not been mentioned. (C) Iron is rendered insoluble and is excreted through the gastrointestinal tract. (D) There is no competition between the two nutrients.

Explanation/Reference:
Explanation:
(A) Dandelion leaves are not a source of lead. (B) Pencils are not a source of lead poisoning. (C) Chewing on objects painted before 1960 is a common source of lead poisoning in children. Gasoline is another source. (D) Stuffed animals are not a source of lead.

(A) Adequate air exchange and tissue oxygenation depend on competent respiratory function. Checking the airway is the nurse's priority action. (B) Obtaining the vital signs is an important action, but it is secondary to airway management. (C) Reorienting a client to time, place, and person after surgery is important, but it is secondary to airway and vital signs. (D) Airway management takes precedence over physician's orders unless they specifically relate to airway management.

Section: Questions Set D
Explanation:
Explanation
(A) Anuriais defined as absence of urine output, which is not indicative of the urinary pattern of diabetes insipidus. (B) Oliguriais defined as <500 mL of urine per day, which is not a urinary output pattern associated with diabetes insipidus. (C) Dysuriais defined as difficult urination. Clients with diabetes insipidus do not have dysuria as a symptom of their disease. (D) Polyuria is a primary symptom of diabetes insipidus. These clients have decreased or absent vasopressin secretion, which causes water loss in the urine and sodium increases.

Explanation
(A) Although tumor size is a factor in classification of cancer growth, it is not an indicator of lymph node spread. (B) Axillary node status is the most important indicator for predicting how far the cancer has spread. If the lymph nodes are positive for cancer cells, the prognosis is poorer. (C) The client's previous history of cancer puts her at an increased risk for breast cancer recurrence, especially if the cancer occurred in the other breast. It does not predict prognosis, however. (D) The estrogen-progesterone assay test is used to identify present tumors being fedfrom an estrogen site within the body. Some breast cancers grow rapidly as long as there is an estrogen supply such as from the ovaries. The estrogen-progesterone assay test does not indicate the prognosis.