No abstract

LC-HR/MS offers unique opportunities for time-sensitive clinical analysis of blood samples from intoxicated patients and for comprehensive screening in a wide range of situations and materials. While the identification is not as definitive as that obtained by conventional fragmentation MS, the presumptive identification can be confirmed later with standards and spectral library matches. Optimum utilization of the presumptive diagnosis requires close collaboration between the laboratory analysts and their clinical counterparts.

Twelve patients with 3,4-methylenedioxymethamphetamine (MDMA) toxicity from a single rave event presented to multiple San Francisco Bay area hospitals with various life-threatening complications including seizures and hyperthermia. Eight required emergent endotracheal intubation and six had hypotension. Hyperkalemia, acute kidney injury, and rhabdomyolysis were present in most of the patients. In all, 2 patients died, 4 survived with permanent neurologic, musculoskeletal, and/or renal sequelae, and 6 survived without any apparent lasting deficits. Hyperthermia was present in 10 patients and was severe (40.9-43° C) in 7. Using multiple cooling methods, the average time to achieve cooling was 2.7 hours. Serum drug analysis was performed on 3 patients, demonstrating toxic MDMA concentrations without the presence of other xenobiotics. Two capsules confiscated by police at the event contained 82% and 98% MDMA, respectively, without other pharmacologically active compounds. Capsule #2 contained 270 mg MDMA, which is more than twice the amount of MDMA usually contained in 1 dose. The MDMA-induced hyperthermia significantly contributed to the morbidity and mortality in this case series. Factors contributing to the severity of the hyperthermia include ingestion of large doses of MDMA, a warm ambient environment, and physical exertion.