In the same hospital where the patient from the previous que…
In the same hospital where the patient from the previous question is admitted, a pediatrician evaluates five children several hours after a meal rich in dietary fats. Each patient’s profile is shown below: The child described in the previous question most likely corresponds to which patient profile?
Read DetailsA researcher develops a mouse in which a nitrogen metabolism…
A researcher develops a mouse in which a nitrogen metabolism-associated enzyme is selectively eliminated from the perivenous region of the liver acinus. The periportal region remains completely normal, including normal expression of CPS-I and all urea cycle enzymes. After a protein-rich meal, blood leaving the liver is found to contain elevated ammonia concentrations despite normal periportal urea cycle activity. Which function of the liver acinus has been disrupted most directly and what enzyme(s) has/have been eliminated?
Read DetailsDuring the last two quarters, your department has compared 8…
During the last two quarters, your department has compared 86 internal carotid arteries evaluated by carotid duplex with angiography. The results: 70 vessels had a hemodynamically significant lesion documented by the noninvasive and invasive studies. 12 showed no evidence of hemodynamically significant lesion by either method. In 1 case, the noninvasive study was negative, but the angiogram documented a 70%-99% diameter reduction. In 3 cases, the noninvasive studies were consistent with a >50% diameter reduction, but the invasive study was read as normal. What is the negative predictive value of carotid duplex in your department?
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