The American journal of emergency medicine
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The presence of the sonographic sliding lung sign (SLS) is a sensitive indicator for the absence of a pneumothorax. The addition of M-mode ultrasound (US) can be a useful adjunct in detecting the SLS. ⋯ M-mode US may be used successfully to detect the SLS during helicopter transport.
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Comparative Study
Small-bore catheter versus chest tube drainage for pneumothorax.
The aim of the study was to compare the effectiveness of drainage via a single-lumen (5F catheter) central venous catheter (CVC) to a conventional (14-20 F catheter) chest tube (CT) for the management of pneumothoraces, including primary spontaneous pneumothorax (PSP), secondary spontaneous pneumothorax (SSP), and traumatic and iatrogenic pneumothoraces. ⋯ Our findings suggest that drainage via a catheter or via a CT is similarly effective in the management of pneumothorax. We recommend considering drainage via a small-bore catheter as a first-line treatment in patients with pneumothorax, whatever its cause.
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Aortic intramural hematoma is a contained aortic wall hematoma without a demonstrable intimal flap. It is similar to aortic dissection, but the pathology and pathophysiology are different. We report a patient with a chronic descending thoracic aortic intramural hematoma presenting with acute rupture and periaortic hematoma along with concomitant acute ST-elevation myocardial infarction that proved to be catastrophic without intervention. We discuss the diagnostic and therapeutic dilemma.
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Human serum albumin (HSA) is used as a plasma expander; however, albumin is readily eliminated from the intravascular space. The objective of this study was to establish the effects of various-sized polymerized HSAs (PolyHSAs) during small-volume resuscitation from hemorrhagic shock on systemic parameters, microvascular hemodynamics, and functional capillary density in the hamster window chamber model. Polymerized HSA size was controlled by varying the cross-link density (ie, molar ratio of glutaraldehyde to HSA). ⋯ Pharmacokinetic analysis of PolyHSA(60:1) indicates reduced clearance and increased circulatory half-life compared with monomeric HSA and other PolyHSA formulations. In conclusion, HSA molecular size and solution viscosity affect central hemodynamics, microvascular blood flow, volume expansion, and circulation persistence during small-volume resuscitation from hemorrhagic shock. In addition, PolyHSA can be an alternative to HSA in pathophysiological situations with compromised vascular permeability.
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Treatment of pain in the emergency department (ED) is a significant area of focus, as previous studies have noted generally inadequate treatment of pain in ED patients. Previous studies have not evaluated the impact of computerized physician order entry (CPOE) on the treatment of pain in the ED. We sought to evaluate treatment of pain before and after implementation of CPOE in an academic ED. ⋯ The use of CPOE in the ED may offer modest benefits in the treatment of patients with pain-related complaints.