Academic emergency medicine : official journal of the Society for Academic Emergency Medicine
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Review Case Reports
The mortality benefit threshold for patients with suspected pulmonary embolism.
The mortality benefit for pulmonary embolism (PE) is the difference in mortality between treated and untreated patients. The mortality benefit threshold is the mortality benefit above which testing for a condition should be initiated and below which it should not. To illustrate this concept, the authors developed a decision model to estimate the mortality benefit threshold at several pretest probabilities for low-risk emergency department (ED) patients with possible PE and compare those thresholds with contemporary management of PE in the United States and what is known and not known about treatment benefits with anticoagulation. ⋯ The mortality benefit threshold for initiating PE testing is very high at low pretest probabilities of PE, which should be considered by clinicians in their diagnostic approach to PE in the ED. The mortality benefit threshold is a novel way of exploring the benefits and risks of ED-based testing, particularly in situations like PE where testing (i.e., CT use) carries real risks and the benefits of treatment are uncertain.
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The authors previously derived a clinical decision rule (CDR) for chest radiography in patients with chest pain and possible acute coronary syndrome (ACS) consisting of the absence of three predictors: history of congestive heart failure, history of smoking, and abnormalities on lung auscultation. The aim of the investigation was to prospectively validate and refine the CDR for chest radiography in an independent patient population. ⋯ Prospective validation of our previously derived CDR for clinically important chest radiographic abnormalities was not successful. Derivation of a refined rule identified all clinically important radiographic abnormalities, but was insufficiently specific. No CDR with adequate sensitivity and specificity could be found.
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Comparative Study
Prevalence of acute lung injury among medical patients in the emergency department.
Acute lung injury (ALI) affects an estimated 190,000 persons per year in U.S. intensive care units (ICUs), but little is known about its prevalence in the emergency department (ED). ⋯ The prevalence of ALI was nearly 9% in adult nontrauma patients receiving mechanical ventilation in the ED. Further study is required to determine which types of patients present to the ED with ALI, the extent to which lung protective ventilation is used, and the need for ED ventilator management algorithms.
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Comparative Study
Patient understanding of emergency department discharge instructions: where are knowledge deficits greatest?
Many patients are discharged from the emergency department (ED) with an incomplete understanding of the information needed to safely care for themselves at home. Patients have demonstrated particular difficulty in understanding post-ED care instructions (including medications, home care, and follow-up). The objective of this study was to further characterize these deficits and identify gaps in knowledge that may place the patient at risk for complications or poor outcomes. ⋯ Patients demonstrate the most frequent knowledge deficits for home care and return instructions, raising significant concerns for adherence and outcomes.
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Randomized Controlled Trial Comparative Study
Emergency cricothyroidotomy: a randomized crossover trial comparing percutaneous techniques: classic needle first versus "incision first".
Emergency cricothyroidotomy is potentially lifesaving in patients with airway compromise who cannot be intubated or ventilated by conventional means. The literature remains divided on the best insertion technique, namely, the open/surgical and percutaneous methods. The two are not mutually exclusive, and the study hypothesis was that an "incision-first" modification (IF) may improve the traditional needle-first (NF) percutaneous approach. This study assessed the IF technique compared to the NF method. ⋯ The IF modification allows faster access, fewer complications, and more favorable clinician endorsement than the classic NF percutaneous technique in a validated model of cricothyroidotomy. We suggest therefore that the IF technique be considered as an improved method for insertion of an emergency cricothyroidotomy.