The patient, a 38-year-old male, suffered from repeated epigastric pain for many years, and suddenly developed severe abdominal pain with abdominal muscle tension in a plate-like abdomen. The most likely cause was: A: Acute cholecystitis B: Perforation of stomach or duodenum C: Acute pancreatitis D: Rupture of spleen E: Rupture of kidney

Risk factors for preeclampsia do not include: A: Age>;40 B: diabetes C: history of preclampsia D: placenta previa

A 35-year-old man is awakened at night because of severe lower abdominal pain that radiates to the groin. The pain is very intense and comes in waves. The next morning, he notices blood in his urine. On examination, there are no remarkable findings. Which of the following is the most likely diagnosis?

A 56-year-old man has a large amount of ascites. What kind of abdomen contour is it for him? A: Abdomen is frog-like with umbilicus depressed. B: Abdomen is frog-like with umbilicus exerted. C: Pointed abdomen D: Spherical abdomen E: Scaphoid abdomen

For late pregnancy patients with emergency abdominal pain and bleeding during ultrasound examination, it should be noted that A: placental preposition B: amniotic fluid bleeding C: placental abruption D: trauma