Sympathomimetic Toxicity

Use an ABC assessment and immediately obtain temperature, heart rate, blood pressure, respiratory status, and serial mental-status examinations. The clinically useful syndrome is autonomic hyperactivity—tachycardia, hypertension, diaphoresis, and mydriasis—with psychomotor agitation, paranoia, psychosis, seizure, or hyperthermia. Continue vital-sign monitoring, particularly heart rate and blood pressure, because untreated hyperadrenergic physiology can produce complications. BMJ+1BMJToxidromes and a general approach to poisoningCDC[PDF] The ASAM/AAAP Clinical Practice Guideline on the ... - CDC Stacks

Place patients with significant hyperadrenergic manifestations in an acute-care setting. Remove further exposure, minimize stimulation in a quiet area when feasible, and treat neuroexcitation and autonomic instability rather than attempting to establish a specific stimulant diagnosis before treatment. PubMed+2PubMedSympathomimetic Toxicity - StatPearls - NCBI BookshelfPubMedClinical Practice Guidelines for Assessment and Management of ...CDC[PDF] The ASAM/AAAP Clinical Practice Guideline on the ... - CDC Stacks

Administer a GABAergic agent for stimulant-related hyperadrenergic symptoms; benzodiazepines are the recommended first-line class and also address agitation and seizures. Phenobarbital or propofol are GABAergic alternatives in appropriate monitored settings. The search results support lorazepam 2 mg orally as one cited option for stimulant intoxication, but do not establish a universal intravenous dosing regimen; titrate the sedative strategy to clinical control with respiratory monitoring. PubMed+1PubMedClinical Practice Guidelines for Assessment and Management of ...CDC[PDF] The ASAM/AAAP Clinical Practice Guideline on the ... - CDC Stacks

Obtain point-of-care glucose when altered mental status, seizure, or an uncertain toxidrome makes hypoglycemia a competing diagnosis. In patients with suspected stimulant toxicity, blood chemistries, ECG, cardiac biomarkers, chest radiography, and definitive blood or urine testing may be indicated according to the presentation rather than ordered routinely. BMJ+1BMJAmphetamine and methamphetamine use disorderPubMedClinical Practice Guidelines for Assessment and Management of ...

For chest pain, ischemic ECG changes, dysrhythmia, persistent hemodynamic abnormalities, or substantial stimulant exposure, obtain an ECG and cardiac biomarkers. Cocaine can cause coronary vasoconstriction while increasing cardiac workload; ECG alone may not establish ischemia, whereas cardiac troponins improve diagnostic clarity. Cocaine also increases dysrhythmia risk, including ventricular tachycardia, and may prolong QRS and QT through sodium- and potassium-channel effects. PubMed+2PubMedComprehensive review of cardiovascular toxicity of drugs and related agentsPubMedStimulant Drugs of Abuse and Cardiac ArrhythmiasWileyCocaine and cardiovascular toxicity - Wiley Online Library

For methamphetamine-associated presentations, consider CBC, comprehensive chemistry panel, troponin, BNP, CK, and urinalysis when the presentation suggests cardiac, renal, or muscle injury. In long-term or heavy stimulant use, maintain heightened suspicion for cardiac and renal disorders, use a lower threshold for ECG, and use a lower threshold for CK when history or examination suggests rhabdomyolysis. PubMed+1PubMedMethamphetamine Toxicity(Archived) - StatPearls - NCBI BookshelfPubMedThe ASAM/AAAP Clinical Practice Guideline on the Management of ...

Treat agitation and autonomic activation first with a benzodiazepine-centered GABAergic strategy, then reassess heart rate, blood pressure, temperature, chest pain, and ECG. This sequence matters because psychomotor agitation and catecholaminergic activation are major drivers of the tachycardia and hypertension seen with sympathomimetic agents. BMJ+2BMJToxidromes and a general approach to poisoningPubMedSympathomimetic Toxicity - StatPearls - NCBI BookshelfCDC[PDF] The ASAM/AAAP Clinical Practice Guideline on the ... - CDC Stacks

Do not dismiss chest pain because the patient is young or reports cocaine use. Cocaine-associated myocardial ischemia can occur in young men without major atherosclerosis, although risk is greater with atherosclerosis and cigarette smoking. Cocaine also roughly doubles the risk of ischemic and hemorrhagic stroke and is associated with aortic dissection; chest, back, or neurologic symptoms therefore require organ-specific evaluation rather than reassurance after initial sedation. PubMedPubMedComprehensive review of cardiovascular toxicity of drugs and related agents

For methamphetamine, consider both acute ischemic/electrical complications and chronic structural disease. In one retrospective cohort, only 28.3% of methamphetamine users had a normal ECG; QTc greater than 440 ms occurred in 27.2%, and a retrospective analysis of 627 ECGs found evidence of myocardial infarction in 6.5%. These data support a low threshold for ECG in high-risk presentations but do not replace symptom- and examination-directed interpretation. PubMed+1PubMedStimulant Drugs of Abuse and Cardiac ArrhythmiasPubMedThe ASAM/AAAP Clinical Practice Guideline on the Management of ...

Continue acute-care monitoring until the hyperadrenergic state is controlled and the trajectory of temperature, heart rate, blood pressure, neurologic status, and any identified cardiac, renal, or muscle complication is clear. Significant hyperadrenergic symptoms typically require acute-care management, and serial vital signs are specifically recommended to reduce preventable complications. CDCCDC[PDF] The ASAM/AAAP Clinical Practice Guideline on the ... - CDC Stacks

Use a higher level of care when severe agitation requires ongoing sedative treatment, hyperthermia persists, seizures recur, chest pain or ECG/troponin findings suggest cardiac injury, neurologic findings raise concern for hemorrhage, or CK/renal testing identifies rhabdomyolysis or acute kidney injury. These presentations are specifically identified among the serious complications of methamphetamine and stimulant toxicity. BMJ+2BMJAmphetamine and methamphetamine use disorderPubMedEmergency department management of methamphetamine toxicity - PubMedPubMedThe ASAM/AAAP Clinical Practice Guideline on the Management of ...

After acute stabilization, assess co-occurring psychiatric conditions and offer treatment for stimulant use disorder. Contingency management, cognitive behavioral therapy, motivational interviewing, the Matrix model, and community reinforcement are core treatment approaches; pharmacotherapy evidence remains limited and is generally considered in specialist care settings. BMJBMJAmphetamine and methamphetamine use disorder