(A) Sinus bradycardia and atrioventricular (AV) heart block are usually a result of right coronary artery occlusion. The right coronary artery perfuses the sinoatrial and AV nodes in mostindividuals. (B) Occlusion of the left main coronary artery causes bundle branch blocks and premature ventricular contractions. (C) Occlusion of the circumflex artery does not cause bradycardia. (D) Sinus tachycardia occurs primarily with left anterior descending coronary artery occlusion because this form of occlusion impairs left ventricular function.

Section: Questions Set A
Explanation:
(A) Celery is high in sodium. (B) Potatoes are high in potassium. (C) Tomatoes are high in sodium. (D) Liver is high in iron.

Explanation/Reference:
Explanation:
(A, B, C) These complaints are not specific signs and symptoms associated with abdominal aortic aneurysm. If symptoms are present, the aneurysm is expanding or rupture is imminent. (D) Many clients may experience no symptoms. The only symptom may be a pulsation noted in the abdomen in the reclining position.

Explanation/Reference:
Explanation:
(A) Chlamydia trachomatis infection is the most common STD in the United States. The Centers for Disease Control and Prevention recommend screening of all high-risk women, such as adolescents and women with multiple sex partners. (B) Herpes simplex genitalia is estimated to be found in 5-20 million people in the United States and is rising in occurrence yearly. (C) Syphilis is a chronic infection caused by Treponema pallidum. Over the last several years the number of people infected has begun to increase. (D) Gonorrhea is a bacterial infection caused by the organism Neisseria gonorrhoeae. Although gonorrhea is common, chlamydia is still the most common STD.

(A) Provision of food and fluid promotes bowel elimination. Nutritional needs postoperatively are determined by the physician, not the client. (B) Increasing IV fluids postoperatively will not cause a client to void. Any change in rate of administration of IV fluids should be determined by the physician. (C) The postoperative client with normal kidney function who cannot void 8 hours after surgery is retaining urine. The client may need catheterization or medication. The physician must provide orders for both as necessary. (D) Although morphine sulfate can cause urinary retention, withholding pain medication will not ensure that the client will void. The client with uncontrolled pain will probably not be able to void.