T44.7X3

Clinical Causes: Accidental overdose of beta-blocker medications Intentional overdose or misuse, including suicide attempts Poisoning caused by assault or malicious intent Miscommunication or mistaken dosing of prescribed medication Use of counterfeit or contaminated medication containing beta-blockers

Key Symptoms: Severe fatigue or weakness Dizziness or lightheadedness, especially when standing up Slow heart rate (bradycardia) Low blood pressure (hypotension) Fainting or loss of consciousness Cold or bluish extremities due to poor circulation Difficulty breathing or shortness of breath Gastrointestinal issues such as nausea, vomiting, or diarrhea Confusion or altered mental state Electrolyte imbalances leading to abnormal heart rhythms

Diagnosis Path: A healthcare professional will perform a detailed medical evaluation including a review of recent medication intake and any potential exposure to beta-blockers. Diagnostic tests may include blood tests to measure drug levels, electrolyte assessments, and cardiac monitoring like an electrocardiogram (ECG) to detect abnormal heart rhythms. Additional assessments may involve blood pressure measurement and neurological examinations to evaluate the severity of poisoning and guide treatment decisions.

Treatment Protocols: Managing poisoning by beta-adrenoreceptor antagonists involves several key steps and may require emergency intervention. Typical treatments include: - **Gastrointestinal decontamination**: Activated charcoal may be administered if the ingestion was recent, to limit absorption. - **Supportive care**: Monitoring vital signs closely, providing intravenous fluids to manage blood pressure, and oxygen therapy if needed. - **Medication reversal**: Administration of specific antidotes such as intravenous glucagon, which can counteract the effects of beta-blockers on the heart. - **Advanced interventions**: In severe cases, medications to increase heart rate or interventions like cardiac pacing or mechanical support may be necessary. - **Monitoring and prevention**: Continuous cardiac monitoring and electrolyte stabilization are crucial during recovery. The treatment approach depends on the amount of exposure, the specific beta-blocker involved, and the clinical presentation of the patient.