Shortly after induction with succinylcholine and sevoflurane, an OR client develops masseter rigidity, rapid r…

Question

Shortly after induction with succinylcholine and sevoflurane, an OR client develops masseter rigidity, rapid rise in end-tidal CO2 to 70, tachycardia, and temperature spike to 40°C. Which is the priority action?

Accepted Answer

Option 1: Stop triggering agents (succinylcholine, volatile gas), call for help, administer IV dantrolene 2.5 mg/kg, cool the client, hyperventilate with 100% O2, and treat hyperkalemia/acidosis

Correct (2): Malignant hyperthermia — autosomal dominant ryanodine receptor disorder triggered by succinylcholine and volatile anesthetics. Hallmarks: masseter rigidity, rising EtCO2, hyperthermia, tachycardia, acidosis, rhabdomyolysis. Antidote: IV dantrolene 2.5 mg/kg immediately (repeat to max 10 mg/kg). Stop triggers, cool, treat hyperkalemia and acidosis. (1,3,4) Fatal.

Answer

Option 2: Switch to a different volatile gas

Answer

Option 3: Give additional succinylcholine for relaxation

Answer

Option 4: Increase anesthetic agent for deeper sedation

Shortly after induction with succinylcholine and sevoflurane, an OR client develops masseter rigidity, rapid rise in end-tidal CO2 to 70, tachycardia, and temperature spike to 40°C. Which is the priority action?

In-depth explanation

Clinical scenario

Key concepts

Master the NCLEX-RN with MyMerci

성장을 멈추지 마세요

Shortly after induction with succinylcholine and sevoflurane, an OR client develops masseter rigidity, rapid rise in end-tidal CO2 to 70, tachycardia, and temperature spike to 40°C. Which is the priority action?

In-depth explanation

Clinical scenario

Key concepts

Master the NCLEX-RN with MyMerci