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ToxCard: Second Generation Antipsychotic Overdose

EMDocs

1,2 Neuroleptic malignant syndrome (NMS) (hyperthermia, autonomic instability, rigidity, altered mental status [AMS]) can occur as well and is most often seen with clozapine but has been observed with other atypicals. Rigidity and hyperthermia should raise concerns for NMS. 1 Seizures may occur due to lowered seizure threshold.

Poisoning 111
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Dantrolene for Malignant Hyperthermia

Resus Review

Malignant hyperthermia is a life-threatening reaction to volatile anesthetics and the neuromuscular blocking agent succinylcholine. Dantrolene acts at the ryanodine receptor blocking the release of calcium from the sarcoplasmic reticulum, and reducing the intracellular calcium, thereby countering the effects of the malignant hyperthermia.

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Neurogenic Shock in Children

Pediatric EM Morsels

Shunting of blood to the extremities results in thermal dysregulation and subsequent hypothermia. Crystalloid may help, but neurogenic shock may not respond to fluid administration. Unopposed vagal tone leads to bradycardia. Alpha 1 agonists are necessary to maintain appropriate blood pressure.

Shock 304
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2023 AHA Update on Management Cardiac Arrest or Life-Threatening Toxicity Due to Poisoning

EMDocs

Naloxone administration may reverse respiratory arrest, preventing progression to cardiac arrest. Standard advanced life support with the addition of administration of sodium bicarbonate is appropriate for the treatment of life-threatening dysrhythmias caused by cocaine or other sodium channel blockers. COR 2a, LOE B-NR.

Poisoning 115
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SGEM#320: The RAMPED Trial – It’s a Gas, Gas, Gas

The Skeptics' Guide to EM

Rapid Administration of Methoxyflurane to Patients in the Emergency Department (RAMPED): A Randomised controlled trial of Methoxyflurane vs Standard care. […] The post SGEM#320: The RAMPED Trial – It’s a Gas, Gas, Gas first appeared on The Skeptics Guide to Emergency Medicine. Reference: Brichko et al. Reference: Brichko et al. AEM Feb 2021.

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2023 AHA Update on ACLS

EMDocs

Routine administration of calcium for treatment of cardiac arrest is not recommended. Patients with spontaneous hypothermia after ROSC unresponsive to verbal commands should not routinely be actively or passively rewarmed faster than 0.5° COR 2b, LOE B-R. For patients with OHCA, use of steroids during CPR is of uncertain benefit.

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An elderly male with acute altered mental status and huge ST Elevation

Dr. Smith's ECG Blog

The providers documented concern for ST elevation in the precordial and lateral leads as well as a concern for hyperkalemic T waves in the setting of succinylcholine administration. Potassium resulted as 4.9, initial troponin I 0.05 ng/mL (consistent with prior baseline), and a repeat EKG was obtained 1 hour after the initial EKG.

EKG/ECG 114