A "board-like" abdomen is a sign of which of the following conditions?

A "board-like" abdomen is typically indicative of peritonitis, which is inflammation of the peritoneum, often caused by an underlying condition. In this context, it is most commonly associated with abruptio placentae, a condition where the placenta detaches from the uterus prematurely. This detachment can result in significant bleeding and irritation of the abdominal lining, leading to the rigidity and stiffness characteristic of a "board-like" abdomen.

In the case of abruptio placentae, the presence of abdominal rigidity is critical, as it can signify an acute abdomen that requires immediate medical intervention. Other conditions, such as appendicitis or pancreatitis, may present with abdominal pain but typically do not produce the same level of rigidity as seen with peritonitis. Gallbladder stones may lead to discomfort or tenderness in specific areas but would not generally cause a generalized "board-like" rigidity throughout the abdomen.

Thus, recognizing the "board-like" abdomen as a potential sign of abruptio placentae is crucial in evaluating and managing patients in an emergency setting.