What heart rhythms are considered immediately life-threatening and can cause cardiac arrest?

Mar 25, 2025 ... Additional risks of taking propoxyphene include cardiac arrest, irregular or abnormal heartbeat (arrhythmia), slow heart rate (bradycardia), and ... Less than ordinary activity causes fatigue, palpitation, or dyspnea. IV. Unable to carry on any physical activity without discomfort. Symptoms of heart failure ... Find out about coronary heart disease (CHD), including the main symptoms, causes, treatments and prevention. CHD is a major cause of death in the UK and ... as the risk of all-cause mortality and sudden cardiac death in patients with ... Circadian rhythm of heart rate variability in survivors of cardiac arrest. ... cause disruptions in the heart's normal rhythm ... Heart disease can cause heart attacks and other medical emergencies, including strokes and cardiac arrest. Mar 20, 2025 ... Persistent A-fib – This lasts continuously for more than seven days and typically requires treatment to restore a normal heart rhythm (also ... Epinephrine's cardiac effects may be of use in restoring cardiac rhythm in cardiac arrest due to various causes but is not used in cardiac failure or in ... Mar 9, 2024 ... Coronary heart disease (CHD); Heart failure; Valve disease; Arrhythmias (rhythm disorders). Heart disease can have many causes. It ... When the heart rate begins in the upper chambers of the heart, the condition ... Cardiac arrest. Treatment. Not everyone needs treatment for atrial ... Apr 23, 2019 ... Cardiac rhythm disorders may be caused by the following: Complete heart block. Supraventricular tachycardia. Ventricular tachycardia. Sinus node ...