A neutropenic fever is a single temperature greater than 38.3°C and an absolute neutrophil count less than 1,000/mm2
Any complaint of abdominal pain in an elderly patient should be taken seriously even if they have “normal” vital signs and no guarding or rebound tenderness on abdominal examination
Patients with myocardial infarction may get symptomatic relief from antacids, and patients with esophageal disease may get symptomatic relief from nitroglycerin. Antacids and nitroglycerin are therapeutic medications, not diagnostic tests.
Consider syncope as a cause of fall in a geriatric patient
A febrile patient returning from the tropics has malaria until proved otherwise
Doxycycline is the drug of choice for most severe tick-borne infections, and it should be used empirically and early in the febrile, severely ill patient with a possible tick exposure.
In a young woman presenting with rash, fever, and diarrhea, consider toxic shock syndrome and examine for a retained tampon
When a patient with end-stage renal disease presents with shortness of breath, volume overload is by far the most common cause, even when physical examination and chest X-ray are not diagnostic
The indications for emergency dialysis are acute pulmonary edema, life-threatening hyperkalemia, and life-threatening intoxication or overdose by agents normally excreted by the kidneys
It is not necessary to gradually empty the bladder when treating an episode of acute urinary retention
Do not acutely lower the mean arterial pressure (MAP) more than 20% to 25% in patients with hypertensive encephalopathy
Every ED should have an interdisciplinary evidence-based guideline for the management of acute stroke
The diagnosis of atrial fibrillation (AF) can be made clinically by palpating a peripheral pulse and simultaneously auscultating the heart or visualizing the cardiac rhythm; AF is the only dysrhythmia that results in a pulse deficit (fewer beats palpated than observed or auscultated)
An external pacemaker can be used if a permanent pacemaker malfunctions
It is not always necessary to identify a dysrhythmia prior to treating it. Assume all wide complex tachycardia with hemodynamic instability is ventricular tachycardia (VT)
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