1. what are some causes of bradycardia?
232037
Bradycardia can be caused by: Heart tissue damage related to aging. Damage to heart tissues from heart disease or heart attack. Heart disorder present at birth (congenital heart defect)
888759
In the family described in the present study, the high prev- alence of bradycardia associated with mitral prolapse and syncope, and the precipitation of sinus arrest, syncope, and asystole by simple tilt in one patient, suggest that severe bradycardia may account for sudden death in some patients with mitral valve ...
971910
['Abnormal heart  rhythms, or arrhythmias.', 'Aorta disease and Marfan syndrome.', 'Congenital heart disease.', 'Coronary artery disease (narrowing of the arteries)', 'Deep vein thrombosis and pulmonary embolism.', 'Heart attack.', 'Heart failure.', 'Heart muscle disease (cardiomyopathy)']
1111385
The mechanism and primary etiology of inappropriate sinus tachycardia has not been fully elucidated. An autoimmune mechanism has been suggested, as several studies have detected autoantibodies that activate beta adrenoreceptors in some patients.
518052
Hard exercise, anxiety, certain drugs, or a fever can spark it. When it happens for no clear reason, it's called inappropriate sinus tachycardia (IST). Your heart rate might shoot up with just a little movement or stress. Or it might be high when you're doing nothing.
551646
Some harmless causes of heart palpitations during pregnancy include: the heart reacting to the increase in blood volume. stress and anxiety. reactions to certain food or drinks, especially those that contain caffeine.
389752
Bradycardia is slow heart rate. ... Tachycardia is fast heart rate.
1089849
Medical conditions such as thyroid disease, low blood sugar, anemia, and low blood pressure also may cause palpitations. Heart palpitations may be a sign or symptom of arrhythmia, an irregular heartbeat, or other heart conditions such as heart attack, heart failure, heart valve disease, or cardiomyopathy.
214907
The most common causes for a weak or absent pulse are cardiac arrest and shock. Cardiac arrest occurs when someone's heart stops beating. Shock happens when blood flow is reduced to vital organs. This causes a weak pulse, rapid heartbeat, shallow breathing, and unconsciousness.
1066729
Some heart conditions that can lead to low blood pressure include extremely low heart rate (bradycardia), heart valve problems, heart attack and heart failure. Endocrine problems.
1459972
Things like caffeine, alcohol and stress can cause small, temporary arrhythmias like PVCs. But there are factors that can cause permanent arrhythmias, too. Your arteries are highways for oxygen and nutrients. However, fat, cholesterol and calcium can build plaques in the arteries, causing coronary artery disease.
621007
['Atropine. In the absence of reversible causes, atropine remains the first-line drug for acute symptomatic bradycardia (Class IIa). ... ', 'Pacing. Transcutaneous pacing is a Class I intervention for symptomatic bradycardias. ... ', 'Alternative Drugs to Consider. ... ', 'Epinephrine. ... ', 'Dopamine. ... ', 'Glucagon. ... ', 'Sinus Tachycardia. ... ', 'Evaluation.']
602419
['An abnormally fast heart rate (tachycardia)', 'An abnormally slow heart rate (bradycardia)', 'Abrupt decreases in heart rate (variable decelerations)', 'Late returns to the baseline heart rate after a contraction (late decelerations)']
960320
["If damage to the heart's electrical system causes your heart to beat too slowly, you will probably need to have a pacemaker. ... ", 'If another medical problem, such as hypothyroidism or an electrolyte imbalance, is causing a slow heart rate, treating that problem may cure the bradycardia.']
49951
Bradycardia is a slower than normal heart rate. The hearts of adults at rest usually beat between 60 and 100 times a minute. If you have bradycardia (brad-e-KAHR-dee-uh), your heart beats fewer than 60 times a minute. Bradycardia can be a serious problem if the heart doesn't pump enough oxygen-rich blood to the body.
219704
A slow, forceful heartbeat might be a sign of heart rhythm problems such as bradycardia, in which your heart beats less than 60 times a minute. An irregular or fluttering heartbeat could be caused by atrial fibrillation (AFib), the most common type of irregular or abnormal heartbeat.
1219305
coordination problems, overactive reflexes, or muscle twitching. racing heart rate. high or low blood pressure. sweating or fever.