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The Lever Test for Diagnosing ACL Injuries
The anterior cruciate ligament (ACL) is one of the most commonly injured knee ligaments, with nearly 200,000 injuries annually in the US, with ~100,000 requiring reconstruction. The ACL prevents anterior translation of the tibia relative to the femur and is a secondary restraint to tibial and varus/valgus rotation. Accurately diagnosing ACL injuries in the ED after an acute knee injury remains difficult. The diagnosis is complicated because clinical tests are performed on an acutely injured knee, which is likely swollen and painful, leading to muscle contractures and patient apprehension. As Emergency Medicine physicians, we must have some confidence in suspicion of an ACL tear because not all patients can or should be referred for prompt orthopedic follow-up.
Has Video Finally Killed DL?
More than 1.5 million adults undergo tracheal intubation outside of the operating room each year in the United States. Traditionally, this has been performed with direct laryngoscopy, where a clinician displaces the patient’s tongue and epiglottis with a laryngoscope blade to visualize the vocal cords through the mouth, allowing for direct visualization of the passage of an endotracheal tube. An alternative method for tracheal intubation is video laryngoscopy, where a camera on the distal half of the blade transmits an image to a screen allowing for indirect visualization of the vocal cords and passage of an endotracheal tube without direct line of site.
Induction Reduction?
Rapid sequence intubation (RSI) is frequently performed under emergent conditions in acutely ill patients. RSI is a technique for managing the emergency airway that induces immediate unresponsiveness (induction agent) and muscular relaxation (neuromuscular blocking agent). In properly selected patients, it is a quick, safe, and effective approach that results in optimal intubating conditions. However, one of the feared complications of RSI is post-intubation hypotension leading to cardiovascular collapse. Although there are multiple possible reasons for hypotension post-intubation, the choice and dosing of induction agents has been implicated.