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Metoprolol is a beta blocker, or an antagonist of the β-adrenergic receptors. It is specifically a selective antagonist of the β 1-adrenergic receptor and has no intrinsic sympathomimetic activity. [37] Metoprolol exerts its effects by blocking the action of certain neurotransmitters, specifically adrenaline and noradrenaline.
Sudden arrhythmic death syndrome (SADS) is a sudden unexpected death of adolescents and adults caused by a cardiac arrest. However, the exact cause of the cardiac arrest, and thus the exact cause of death, is unknown. These deaths occur mainly during sleep or at rest. [7] One type of conduction defect known as Brugada syndrome can be ...
Serotonin syndrome, in which an excess of serotonin in the synapses causes a similar crisis of hypertension and mental confusion, could be confused with an adrenergic storm. Serotonin, being a tryptamine (non-catecholamine) involved in higher brain functions, can cause dangerous hypertension and tachycardia from its effects on the sympathetic ...
Here are the entire top 10 causes of death in the U.S. are, in order, according to the Centers for Disease Control and Prevention: Heart disease: 941,652. Cancer: 608,371.
TCA overdose may occur by accident or purposefully in an attempt to cause death. [2] The toxic dose depends on the specific TCA. [2] Most are non-toxic at less than 5 mg/kg except for desipramine, nortriptyline, and trimipramine, which are generally non-toxic at less than 2.5 mg/kg. [5] [2] In small children one or two pills can be fatal. [6]
Arthralgia (from Greek arthro- ' joint ' and -algos ' pain ') literally means 'joint pain'. [ 1 ] [ 2 ] Specifically, arthralgia is a symptom of injury , infection , illness (in particular arthritis ), or an allergic reaction to medication .
Most patients with drug-induced QT prolongation are asymptomatic and are diagnosed solely by EKG in association with a history of using medications known to cause QT prolongation. [10] A minority of patients are symptomatic and typically present with one or more signs of arrhythmia, such as lightheadedness, syncope, or palpitations. [ 10 ]
While negative inotropism may precipitate or exacerbate heart failure in the short term, certain beta blockers (e.g. carvedilol, bisoprolol and metoprolol) have been believed to reduce long-term morbidity and mortality in congestive heart failure. [13] Examples of negative inotropic agents include: Beta blockers [14]