The effect of multiple neuroimaging studies on classification, treatment, and outcome of acute ischemic stroke

Article Abstract:

Multiple imaging scans may be useful for patients with a stroke of unknown origin but will not likely affect the treatment or results for patients with a stroke of known origin. Researchers reviewed the medical histories of 206 patients with stroke and analyzed whether the classification, treatment, or outcome of these patients differed with respect to the number of imaging scans received. Imaging scans included magnetic resonance imaging (MRI) and computed tomography (CT). A second imaging scan clarified the classification of 40% of the stroke cases previously determined to be of unknown origin and better determined optimal treatment for these patients. There were no significant differences in the types of therapy, length of hospital stay, or patient outcome based on the number of imaging scans received. Additional scans also found the lesion responsible for a small vessel stroke in 42.8% of these patients but did not affect the therapy given or their classification.

Stroke (Disease), Stroke

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A Clinical Prediction Rule for Renal Artery Stenosis

Article Abstract:

A clinical profile based on laboratory tests and clinical and demographic characteristics can reliably predict high blood pressure caused by renal artery stenosis in hypertensive patients. Restricted flow in the renal artery in the kidney is usually diagnosed by renal scintigraphy, an expensive and invasive procedure. Researchers studied 477 hypertensive patients undergoing kidney angiography, and found that a predictive model based on age, gender, vascular disease, serum creatinine concentration, and other factors reliably identified the patients with renal artery stenosis. Using such a predictive profile, physicians could reduce the number of patients who unnecessarily undergo renal scintigraphy.

Hypertension, Predictive value of tests, Predictive value of tests (Medical)

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Diagnosis of renal artery stenosis

Article Abstract:

Computed tomography angiography and magnetic resonance angiography are more accurate for detecting renal artery stenosis than ultrasound, captopril renal scintigraphy, and the captopril test. Renal artery stenosis is a blockage in the artery that supplies blood to the kidneys.

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