![]() The medications most likely to result in palpitations include sympathomimetic agents, anticholinergic drugs, vasodilators and withdrawal from beta blockers. There are many metabolic conditions that can result in palpitations including, hyperthyroidism, hypoglycemia, hypocalcemia, hyperkalemia, hypokalemia, hypermagnesemia, hypomagnesemia, and pheochromocytoma. However one study noted that up to 67% of patients diagnosed with a mental health condition had an underlying arrythmia. Many psychiatric conditions can result in palpitations including depression, generalized anxiety disorder, panic attacks, and somatization. Palpitations secondary to catecholamine excess may also occur during emotionally startling experiences, especially in patients with a long QT syndrome. Supraventricular tachycardias can also be induced at the termination of exercise when the withdrawal of catecholamines is coupled with a surge in the vagal tone. The cause of the palpitations during these conditions is often a sustained supraventricular tachycardia or ventricular tachyarrhythmia. Palpitations can occur during times of catecholamine excess, such as during exercise or at times of stress. The cardiac etiologies of palpitations are the most life-threatening and include ventricular sources (premature ventricular contractions, ventricular tachycardia and ventricular fibrillation), atrial sources (atrial fibrillation, atrial flutter) high output states (anemia, AV fistula, Paget's disease or pregnancy), structural abnormalities (congenital heart disease cardiomegaly, aortic aneurysm, or acute left ventricular failure), and miscellaneous sources (postural orthostatic tachycardia syndrome POTS, Brugada syndrome, and sinus tachycardia). In one study reporting the etiology of palpitations, 43% were found to be of cardiac etiology, 31% of psychiatric etiology and approximately 10% were classified as miscellaneous (medication induced, thyrotoxicosis, caffeine, cocaine, anemia, amphetamine, mastocytosis). The list of etiologies of palpitations is long, and in some cases, the etiology is unable to be determined. Palpitations are a widely diffused complaint and particularly in subjects affected by structural heart disease. ![]() It has been hypothesized that these pathways include different structures located both at the intracardiac and extracardiac level. Sometimes, controlling the rate of an arrhythmia that's causing heart failure can improve the heart's function.The current knowledge of the neural pathways responsible for the perception of the heartbeat not clearly elucidated. Certain arrhythmias can reduce the heart's pumping ability. ![]() If a clot breaks loose, it can block a brain artery, causing a stroke. If palpitations are due to a condition in which the upper chambers of the heart quiver instead of beating properly (atrial fibrillation), blood can pool and cause clots to form. Rarely, palpitations can be caused by life-threatening heartbeat problems and can cause the heart to stop beating effectively. This is more likely in those with a heart problem, such as congenital heart disease or certain valve problems. If the heart beats rapidly, blood pressure can drop, causing the person to faint. Other heart problems, such as irregular heartbeats, structural heart changes, previous heart attack or previous heart surgeryįor palpitations caused by a heart condition, possible complications may include:.An overactive thyroid gland (hyperthyroidism).Certain medicines that contain stimulants, such as some cold or asthma medications.Risk factors for heart palpitations include: Occasionally heart palpitations can be a sign of a serious problem, such as an irregular heart rhythm (arrhythmia).Īrrhythmias might cause a very fast heartbeat (tachycardia), an unusually slow heartbeat (bradycardia), a heartbeat that varies from a typical heart rhythm or a combination of the three. ![]()
0 Comments
Leave a Reply. |