Annals of emergency medicine
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To test the hypothesis that two-thumb chest compression generates higher arterial and coronary perfusion pressures than the current American Heart Association-approved two-finger method. ⋯ The two-thumb method of chest compression generates significantly higher arterial and coronary perfusion pressures than the two-finger method in this infant model of cardiac arrest.
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Comparative Study
Angiotensin II effects in a swine model of cardiac arrest.
To evaluate the effect of different doses of the vasopressor angiotensin II on aortic diastolic and coronary perfusion pressures in a swine model of cardiac arrest. ⋯ Angiotensin II in doses of 50, 75, and 100 micrograms/kg significantly increased aortic diastolic pressure, and doses of 50 and 75 micrograms/kg significantly increased coronary perfusion pressure in this model of cardiac arrest.
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Case Reports
Diffuse subcutaneous emphysema, pneumomediastinum, and pneumothorax after dental extraction.
Subcutaneous emphysema, pneumomediastinum, and pneumothorax may result from surgical procedures and trauma and usually do not present a diagnostic dilemma. We present a case of subcutaneous emphysema, pneumomediastinum, pneumothorax, and pneumoretroperitoneum after a dental procedure with an air-and-water-cooled turbine burr drill. ⋯ If a large amount of air is injected, it may track into not only the subcutaneous tissues but also the mediastinum, pleural space, and retroperitoneal space. Patients with significant amounts of air must be admitted, observed for airway compromise, and be provided IV antibiotics and hydration.