In a patient admitted with acute coronary syndrome, which of the following variables at admission contributes to estimating the risk of death or recurrent myocardial in the GRACE score?

Correct Answer: C

Rationale: The GRACE score includes variables like age, heart rate, systolic BP, creatinine, cardiac arrest, ST-segment deviation, and troponin, but not explicitly these options; however, oxygen saturation can indirectly reflect severity, making C the most relevant.

Correct Answer: B

Rationale: Patients with acute infection outside the liver, severe cardiac or pulmonary disease, or metastatic cancer are not eligible for liver transplantation. Patients with HIV, however, are candidates for transplant if they do not have advanced disease (CD4 <200, viral load >400 copies/mL).

Correct Answer: C

Rationale: Endoscopic therapy (e.g., cauterization) is the first-line treatment to stop bleeding in ulcers, making C correct.

Correct Answer: C

Rationale: The correct sequence is mouth, esophagus, stomach, small intestine, large intestine, anus. The pancreas and liver are accessory organs, not part of the direct path, making C the correct choice.

Correct Answer: D

Rationale: A high potassium, low sodium diet helps lower BP, despite high saturated fat being suboptimal, making D the best choice among options.

Correct Answer: C

Rationale: The small intestine (duodenum, jejunum, ileum) has villi for absorption.

Correct Answer: B

Rationale: Mesothelium is a simple squamous epithelium lining body cavities and serosal surfaces.

Correct Answer: B

Rationale: The digestive system processes organic molecules (carbohydrates, proteins, fats) into smaller units that can be absorbed and enter cells for energy, growth, or repair. Waste removal is excretory. Glucose breakdown occurs in cells, not digestion. Amino acid conversion is synthetic, not digestive.

Correct Answer: A

Rationale: Persistent symptoms suggest non-compliance with diet/lifestyle, warranting a review.