Archive for category: Mythbuster

Relationship of Radiocontrast, Iodine, and Seafood Allergies

04 Feb
February 4, 2014

Computed Tomography (CT) scan using radiocontrast is one of the most common imaging modalities used in emergency departments today. Several studies and my own anecdotal experiences indicate that both physicians and patients believe that iodine allergies are linked to seafood allergies and that both are related to a disproportionate increased risk of “allergic” reactions to […]

Is ATLS wrong about palpable blood pressure estimates?

01 Nov
November 1, 2013

In Advanced Trauma Life Support (ATLS), we learned that a carotid, femoral, and radial pulse correlates to a certain systolic blood pressure (SBP) in hypotensive trauma patients.  Specifically ATLS stated:  Carotid pulse only = SBP 60 – 70 mmHg  Carotid & Femoral pulse only = SBP 70 – 80 mmHg  Radial pulse present = SBP […]

NG Lavage: Indicated or Outdated?

01 Nov
November 1, 2013

Nasogastric lavage (NGL) seems to be a logical procedure in the evaluation of patients with suspected upper GI bleeding, but does the evidence support the logic? Most studies state that endoscopy should occur within 24 hours of presentation, but the optimal timing within the first 24 hours is unclear.  Rebleeding is the greatest predictor of […]

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