Mr. Kawasaki, a 23-year old industrial worker, was burned severely in an industrial accident. He has second degree burns on his right leg and arm, and on his left leg. He has third degree burns on his left arm. The triage nurse, using the rule of nines, estimates the extent of burn as:

Correct Answer: C

Rationale: The rule of nines is a method used to estimate the extent of burns on a patient's body. According to this rule, each major body part is assigned a percentage value that represents the total body surface area (TBSA). In this case, Mr. Kawasaki has second-degree burns on his right leg and arm (9% each) and left leg (9%) and third-degree burns on his left arm (9%). Adding these percentages together, we get a total of 36%, which corresponds to the extent of burn on Mr. Kawasaki's body. Choice A (18%) is incorrect because it only considers one arm and one leg, neglecting the other affected areas. Choice B (45%) is incorrect as it overestimates the extent of burns by including additional body parts not affected. Choice D (54%) is also incorrect as it includes more body parts than those actually burned. Therefore, the correct answer is C (36%) as it accurately reflects the distribution of burns based

Correct Answer: D

Rationale: The correct answer is D, extreme fatigue, for a patient suspected of having hypothyroidism. Hypothyroidism is associated with decreased production of thyroid hormones, leading to a slower metabolism and reduced energy levels. This results in symptoms such as fatigue, weakness, and lethargy. Tachycardia (A) is more commonly associated with hyperthyroidism, where the thyroid is overactive. Hyperthermia (B) is increased body temperature, not typically a symptom of hypothyroidism. Weight loss (C) is also more commonly seen in hyperthyroidism due to increased metabolism. In summary, extreme fatigue is a hallmark symptom of hypothyroidism due to decreased thyroid hormone levels, distinguishing it from the other choices.

Correct Answer: B

Rationale: The correct answer is B: soften the fecal mass and lubricate the walls of the rectum and colon. First, the oil retention enema helps soften the fecal mass, making it easier to pass. Second, the oil lubricates the walls of the rectum and colon, reducing friction and making the passage of stool smoother. This helps prepare the fecal impaction for removal during the subsequent cleansing enema. Choices A, C, and D are incorrect because they do not directly address the primary goal of softening the fecal mass and lubricating the walls of the intestines to facilitate the removal of the impaction.

Correct Answer: C

Rationale: Step-by-step rationale for choice C (Serum potassium level of 5.8 mEq/L) being the best to support a diagnosis of Addison's disease: 1. Addison's disease is characterized by adrenal insufficiency, leading to decreased aldosterone secretion. 2. Decreased aldosterone causes hyperkalemia due to impaired potassium excretion. 3. Elevated serum potassium levels above the normal range (3.5-5.0 mEq/L) are a classic finding in Addison's disease. 4. Therefore, a serum potassium level of 5.8 mEq/L strongly supports the diagnosis of Addison's disease. Summary: - Choice A (BUN level): BUN is not specific to Addison's disease and does not directly relate to adrenal function. - Choice B (Serum sodium level): Hyponatremia is a common finding in Addison's disease, but it is not as specific as hyperkalemia. - Choice D (Blood glucose level): Blood glucose

Correct Answer: B

Rationale: The correct answer is B: Increased urine osmolarity. In hyperglycemia, the body tries to eliminate excess glucose through increased urine output, causing a concentrated urine with high osmolarity. This indicates fluid deficit. Cool, clammy skin (A) may suggest poor perfusion but not fluid volume deficit. Distended neck veins (C) are more indicative of fluid overload. Serum sodium level (D) may be elevated in fluid deficit but does not directly assess volume status like urine osmolarity does.