all of the following are electrolytes except

ATI RN

ATI Nutrition Practice A

1. All of the following are electrolytes except:

A. chloride
B. potassium
C. sodium
D. iron

Correct answer: D

Rationale: Iron is not an electrolyte; electrolytes like sodium, potassium, and chloride help maintain fluid balance and are critical for nerve and muscle function.

2. How is the stomach protected from damage by gastric acid?

A. enzymes present in the stomach
B. a protective bacteria in the stomach
C. bicarbonate present in the stomach
D. the mucus lining of the stomach

Correct answer: D

Rationale: The correct answer is D. The stomach is protected from gastric acid by a thick mucus lining that acts as a physical barrier, preventing the acid from eroding the stomach walls. Enzymes in the stomach help with digestion but do not play a significant role in protecting the stomach from acid damage, so choice A is incorrect. While some bacteria in the stomach can be beneficial, they do not primarily protect the stomach from gastric acid, making choice B incorrect. Bicarbonate, a base, can neutralize acid, but it is not the primary defense mechanism against gastric acid in the stomach, so choice C is also incorrect.

3. The nurse understands that malnutrition is a prevalent issue among hospitalized individuals. What is it commonly associated with?

A. Decreased health care expenses
B. Elevated blood pressure
C. Decreased mortality rates
D. A compromised immune system

Correct answer: D

Rationale: Malnutrition is often associated with a weakened immune system. This is because when the body is not sufficiently nourished, it lacks the necessary nutrients to maintain a well-functioning immune system, making patients more vulnerable to infections and other health complications. This can potentially increase mortality rates and prolong hospital stays, contrary to choice C. Choices A and B are incorrect as malnutrition does not lead to decreased health care costs or high blood pressure. In fact, it may increase health care costs due to the potential for increased complications and extended hospital stays.

4. Myxedema coma is a life-threatening complication of long-standing and untreated hypothyroidism with one of the following characteristics.

A. Hyperglycemia
B. Hypothermia
C. Hyperthermia
D. Hypoglycemia

Correct answer: A

Rationale: Myxedema coma is associated with hypothermia, not hyperthermia. Therefore, the correct characteristic of myxedema coma is hypothermia. This condition is a medical emergency that requires prompt recognition and intervention to prevent serious complications. The presence of hyperglycemia is not a defining characteristic of myxedema coma, making choice A the correct answer in this case. Hyperthermia and hypoglycemia are not typically seen in myxedema coma and are not consistent with the clinical presentation of this condition.

5. While a team effort is necessary in the operating room (OR) for efficient and quality patient care delivery, the number of people in the room should be limited for infection control purposes. Which roles comprise this team?

A. Surgeon, anesthesiologist, scrub nurse, radiologist, orderly
B. Surgeon, assistants, scrub nurse, circulating nurse, anesthesiologist
C. Surgeon, assistant surgeon, anesthesiologist, scrub nurse, pathologist
D. Surgeon, assistant surgeon, anesthesiologist, intern, scrub nurse

Correct answer: B

Rationale: The roles typically present in an operating room team include the surgeon, assistants (which may include an assistant surgeon), scrub nurse, circulating nurse, and anesthesiologist. These roles are directly involved in the operation and patient care. Choice B is correct. Choice A includes a radiologist and an orderly, who are not typically part of the immediate surgical team in the OR. Choice C includes a pathologist, who usually works in a laboratory outside of the OR. Choice D includes an intern, who may or may not be part of the team, depending on the specific circumstances and hospital policy. These explanations make choices A, C, and D incorrect.