Property:AnswerBExp
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One can easily distinguish where or not the nasogastric tube tip is in the stomach or not from an upright anterior-posterior chest radiograph. +
Serum amylase is not one of Ranson's criteria. Nonetheless, serum amylase is highly sensitive for diagnosing acute pancreatitis. +
While whiplash is a common injury in motor vehicle accidents, whiplash would not be responsible for a posterior surgical dislocation. Whiplash would typically result in injuries to the cervical spine rather than the shoulder. +
Decompressive craniectomy is the last resort for elevated intracranial pressure. Not all other options have been exhausted in this case. +
Activation of protein kinase G activates myosin light chain phosphatase. Activation of myosin light chain phosphatase results in vasodilation. +
Lisinopril is an angiotensin-converting enzyme inhibitor (ACE-I). ACE-I are typically associated with cough and hyperkalemia. +
Reduced chloride secretion with augmented sodium absorption results in water retention in the intestinal epithelium of patients with CF. Colonic manifestations of CF, such as recurrent constipations, are often evident during childhood. +
Estramustine is synthesized by coupling estradiol and mustard through a carbamate link. However, estramustine has a weak DNA-alkylating action. In fact, it binds to beta-tubulin and microtubule-associated proteins and leads to microtubule disassembly. Estramustine is used primarily for the treatment of metastatic or locally advanced, hormone-refractory prostate cancer. +
Angiofibromas are reddish brown papules of 0.1 to 0.3 cm diameter that are typically located over the sides of the nose and the medial portions of the cheeks. Angiofibromas may be assoicated with type 1 multiple endocrine neoplasia. +
For mild-to-moderate PCP, alternative therapeutic regimens include dapsone plus TMP, primaquine plus clindamycin, or atovaquone. However, clindamycin generally does not cause hemolytic anemia. +
Medial fibroplasia, which is characterized by its classic “string of beads” appearance, represents the most common type of fibromuscular dysplasia. Histologically, there is involvement of the media, whereas the intima, internal elastic lamina, and adventitia are preserved. +
Prinzmetal (variant) angina is caused by coronary vasospasm due to contraction of the vascular smooth muscle, rather than by atherosclerosis. It occurs more commonly among younger women and typically manifests as clustered angina that occurs nocturnally at rest rather than on exertion. Although approximately two-thirds of patients have concurrent atherosclerosis of a major coronary artery, this is often mild or not in proportion to the degree of symptoms. ECG changes may only be evident while the patient is experiencing an attack, where typically ECG of patients with Prinzmetal angina demonstrates ST-segment elevations (rather than depressions). Prinzmetal angina generally responds to calcium channel blockers. +
A liver sinusoid is a type of sinusoidal blood vessel (with fenestrated, discontinuous endothelium) that serves as a location for the oxygen-rich blood from the hepatic artery and the nutrient-rich blood from the portal vein. +