CPR Electrolyte imbalance and cardiac arrest Significant electrolyte imbalances can precipitate cardiac arrest and are potentially reversible etiologies when promptly and appropriately addressed. Both venous…

Clinical chemistry & laboratory medicine Myocardial ischemia and infarction Definition and pathophysiology Myocardial infarction (MI) is a clinical diagnosis that integrates myocardial injury, evidence of acute…

…atria begin to contract again. An unsynchronised shock that happens to fall in the T wave can precipitate ventricular fibrillation, and cardioversion of fibrillation of…

…syndrome [LQTS] and early repolarization syndrome. These conditions have an underlying genetic basis and may precipitate lethal arrhythmias. Long QT syndrome was identified several decades…

…relative to the cardiac cycle, since a shock delivered asynchronously on the T wave during ventricular tachycardia can precipitate ventricular fibrillation, whereas a synchronized shock…

…distress. Delirium is an acute neuropsychiatric syndrome and a clinical diagnosis, often described as acute brain failure. It is precipitated by somatic illness, drugs, poisoning…

…interval can cause serious arrhythmias and sudden cardiac death. QT prolongation can precipitate torsades de pointes, a specific form of polymorphic ventricular tachycardia characterized by…

…AF and acute deterioration is often bidirectional. AF with a rapid ventricular response may precipitate or aggravate haemodynamic decompensation, whereas acute illness and increased sympathetic…

…Atrial arrhythmias, particularly atrial fibrillation and flutter, are common and may precipitate heart failure [8, 10]. Refractory atrial arrhythmias resistant to antiarrhythmic drugs or repeated…

…Conversely, apparently mild lesions may rupture and precipitate myocardial infarction or sudden death. Coronary anatomy must therefore be interpreted within the broader clinical and physiological…

…during central venous catheter insertion) Underlying lung pathologies In cases of benign pneumothorax, positive pressure ventilation can precipitate a tension pneumothorax, leading to circulatory collapse…

…following recommendations: Administer 100% oxygen at the maximum flow rate . Hypoxia can precipitate cardiac arrest in septic patients; timely oxygenation can potentially prevent circulatory collapse…

…Systemic Inflammatory Response Syndrome (SIRS). Body temperatures surpassing 40°C (104°F) are potentially hazardous and may precipitate cardiac arrest. The classification of hyperthermia is delineated in…

…reach subxiphoid. Avoid sedation and positive pressure ventilation before decompression where possible: anaesthesia and intubation can precipitate circulatory collapse in a tamponaded patient , since positive…

…underlying cause. Contraindications Hypothermia with a body temperature below about 30 °C — the hypothermic myocardium is irritable and pacing can precipitate ventricular fibrillation. Prioritise rewarming…

…Two mechanisms have been proposed to precipitate acute coronary events during infections: An acute coronary event may be triggered by increased myocardial demand during the…

…the type of stroke and the possibility of thrombolytic treatment. Cardiac and pulmonary complications Acute hypertension may precipitate myocardial ischemia or infarction, acute heart failure…

…and cyclophosphamide. Ergot derivatives used for migraine and serotonin antagonists used for depression may precipitate episodes. Clinical presentation and symptoms The characteristic symptom is severe…

…oxygen demand and coronary blood supply, resulting in myocardial hypoperfusion or ischaemia. Ischaemia is commonly precipitated by exertion, emotional stress, or another form of physiological…

…and subsequent sudden death are rare, the arrhythmia is precipitated by an extensive list of "torsadegenic" or "QT liability" drugs. This includes Class III antiarrhythmic…

…as pressure, tightness, heaviness, or squeezing. Develops over several minutes. Is precipitated by exertion. Improves with rest. May radiate to the neck, jaw, shoulders, or…

…1 MI: Caused by atherothrombotic coronary artery disease, usually precipitated by atherosclerotic plaque disruption (rupture or erosion). The dynamic thrombotic component can vary in burden…

…in particular that exceeds the patient's normal variation and requires a change of treatment. Common precipitants are viral infection, bacterial infection and air pollution…

…typical exertional angina. A precipitating factor is identifiable in up to one half of cases. Reported precipitants include vigorous physical activity, emotional stress, and an…