Transcranial Doppler ultrasonography can detect whether there are elevated velocities of the intracranial arteries, which would suggest vasospasm, but it is not a specific test and would not identify the underlying
Liver injury is distinct from acute liver failure and presents with elevated liver test results and/or jaundice in the absence of evidence of liver function failure.
A direct antiglobulin test (Coombs test) is negative. Peripheral blood smear reveals rare schistocytes.
The following cases and commentary, which address seizures, are excerpted from ACP's Medical Knowledge Self-Assessment Program (MKSAP14).. An 18-year-old female college student is evaluated in the emergency department because of a seizure that
Which of the following is the most appropriate next test in the evaluation of this patient? ... Empiric unfractionated heparin therapy is begun. Which of the following is the best test to confirm the diagnosis in this patient?
antinuclear antibody test negative and thyroid-stimulating hormone 3 µU/mL (3 mU/L). ... Contrast-enhanced chest CT would normally be an acceptable test for further investigation of a suspected acute aortic syndrome.
On a six-minute walk test, oxygen saturation at rest and after exercise is 98% and 93%, respectively. ... Which diagnostic test would be most useful in diagnosing the cause of the patient's volume status?
Guidelines recommend CT or MRI as the preferred diagnostic test in symptomatic patients. ... This diagnostic test also is invasive and costly and is of higher yield when used to evaluate for unusual causes of cardiac emboli, such as valvular endocarditis
A stool test is positive for occult blood. An abdominal ultrasound reveals thickening and edema of the ileum.