(A) Dysuria is not a common symptom of heparin overdose. (B) Although epistaxis and hematuria are common symptoms of heparin overdose, dysuria is not. (C) Vertigo is not a common symptom of heparin overdose. (D) Hematuria, ecchymosis, and epistaxis are the most common signs and symptoms of a heparin overdose. Others are thrombocytopenia, elevated liver enzymes, and local injection site complications.

Section: Questions Set C
Explanation:
(A) High Fowler position decreases venous return to the heart and permits greater lung expansion so that oxygenation is maximized. (B) Lying on the left side may improve perfusion to the left lung but does not promote lung expansion. (C) Sitting in a chair will decrease venous return and promote maximal lung expansion. However, clients with pulmonary edema can deteriorate quickly and require intubation and mechanical ventilation. If a client is sitting in achair when this deterioration happens, it will be difficult to intervene quickly. (D) The supine with feet elevated position increases venous return and will worsen pulmonary edema.

Explanation/Reference:
Explanation:
(A) The instillation of erythromycin ophthalmic preparation, not phototherapy, prevents ophthalmia neonatorum. (B) The administration of vitamin K (AquaMEPHYTON) assists the infant's clotting mechanism. (C) Excessive bilirubin accumulates when the infant's liver cannothandle the increased load caused by the breakdown of red blood cells postnatally. This excessive bilirubin seeps out of the blood and into the tissues, staining them yellow. Phototherapy accelerates the removal of bilirubin from the skin by breaking it down into substances that can be excreted in stool or urine. (D) Phototherapy decreases levels of unconjugated bilirubin, thereby preventing kernicterus.

Explanation
(A) Diminished (not accentuated) patellar tendon reflex is a sign of developing MgSO4 toxicity. A value of 21 is considered a normal tendon reflex; 3+ is considered brisker than normal. (B) MgSO4 is a central nervous system (CNS) depressant. It also relaxes smooth muscle. If the respiratory rate is <16 bpm magnesium toxicity may be developing. (C) Urine output of 40mL/hr is enough to allow elimination of toxic levels of magnesium.
Urinary output of <100 mL in a 4-hour period may result in toxic levels of magnesium. (D) Presence of protein in the urine is a symptom of pregnancy-induced hypertension (PIH), a clinical syndrome for which magnesium sulfate is frequently used in medical management. Protein in the urine is not induced by magnesium sulfate intake.

Explanation/Reference:
Explanation:
(A) Digoxin is a cardiac glycoside given to clients in heart failure to improve their myocardial contractility.
(B) Furosemide is a loop diuretic given to clients in heart failure to promote diuresis. (C) O2is given to clients in heart failure to increase oxygenation and to prevent or treat hypoxemia. (D) Nitroglycerin is a nitrate given to clients in heart failure to increase their cardiac output by decreasing the peripheral resistance that the left ventricle must pump against.