Frequent initial clinical signs of MH |
- Hypercarbia (elevated end-tidal CO2) resistant to increases in minute ventilation
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- Tachypnea (or breathing over the ventilator)
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Unusual initial clinical signs of MH |
- Masseter spasm with or without administration of succinylcholine
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- Generalized muscular rigidity
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- Peaked T waves or other arrhythmia (including ventricular tachycardia or fibrillation) resulting from sudden acute hyperkalemia
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- Hyperthermia (variable rates of rise)
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Delayed clinical sequelae of MH |
- Cola-colored urine (myoglobinuria) resulting from significant rhabdomyolysis
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- Disseminated intravascular coagulation (from prolonged or severe hyperthermia)
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