A 4-year-old boy presents to the emergency room with muscle spasms. His past medical history is significant for recurrent infections and neonatal seizures. Evaluation of his serum electrolytes reveals hypocalcemia. This patient would be most susceptible to which of the following diseases?
To provide anesthesia to a patient in the third stage of labor, an obstetrician palpates the ischial spine transvaginally, then injects a local anesthetic. Injection of anesthetic at this approximate location will most likely block which of the following nerves?
A 45-year-old male presents to the physician with muscle cramps, perioral numbness, and irritability over the past 3 to 4 months. Lab results reveal hypocalcemia, normal albumin level, and hyperphosphatemia . Parathyroid hormone level is decreased. Alkaline phosphatase level is normal. Which of the following is most likely causing this clinical scenario?
A healthy, 37-year-old, recently divorced woman loses her job at th e auto factory. She picks up her three young children from the factory day care center and gets into an automobile accident on the way home. Her 5-year-old son, who was not wearing a seat belt, sustains a severe head injury. The woman was not hurt in the accident, but is hyperventilating as she sits in the waiting room at the hospital. She complains of feeling faint and has blurred vision. Which of the following is decreased in this woman?
A surgeon performs an exploratory laparotomy, producing a large incision in the patient's abdomen. Poor blood supply to which of the following is most likely to cause problems during the healing process?
Which of the following developmental abnormalities might account for unexplained small intestinal bleeding?
A 25-year-old woman with sickle cell anemia complains of steady pain in her right upper quadrant with radiation to the right shoulder, especially after large or fatty meals. Her physician diagnoses gallstones. Of which of the following compounds are these stones most likely composed?
A 32-year-old, blood type A positive male receives a kidney transplant from a blood type B positive female donor with whom he had a 6-antigen HLA match. Once the kidney is anastomosed to the man's vasculature, the transplant team immediately begins to observe swelling and interstitial hemorrhage. After the surgery, the patient developed fever and leukocytosis and produced no urine. Which of the following is the most likely explanation?
A 32-year-old pregnant woman is told by her physician to avoid taking aspirin. Use of aspirin is contraindicated, especially during the last part of pregnancy, because aspirin affects which of the following hematologic parameters?
Routine physical examination of a 55-year-old man demonstrates marked finger clubbing. Radiography of the hand shows new bone formation beneath the periosteum. With which of the following disorders is this finding most strongly associated?