The research showed that those who had 4 or more cups of coffee a day (400 mg of caffeine or more) had an 18 % lower risk of being hospitalized because
of heart rhythm disturbances while those that consumed at least 1 - 3 cups had a 7 % lower risk.
Heart attack survivors often experience
dangerous heart rhythm disturbances during treatment designed to restore blood flow to the injured heart muscle, a common and confounding complication of an otherwise lifesaving intervention.
Dr Andersen said the study was important because, although there have been other studies looking at the effects of endurance exercise on various cardiovascular problems such as ischemic heart disease and stroke, there have been only a few, smaller studies of its effect
on heart rhythm disturbances, and they have tended to look at people who are less physically active, or compared very sedentary people with those who were very active.
«Atrial fibrillation (AF) is the most
common heart rhythm disturbance and is associated with a five-fold increased risk of ischaemic stroke,» said Dr Al - Khalili.
Immersion in excessively cold water can be dangerous for some people as they could cause a gasping response that leads to drowning or stimulate
strong heart rhythm disturbances that can result in cardiac arrest.
Symptoms of hyperkalemia include fatigue, muscle weakness, heart palpitations and rapid breathing, and if potassium gets high enough it can
cause heart rhythm disturbances, which can disrupt blood flow enough to cause stroke, heart attack, kidney failure and clots in the lungs.
The researchers say these molecular changes in the sinus node — the cardiac structure responsible for generating heart rhythm — may help us to understand the more frequent occurrence
of heart rhythm disturbances or even loss of consciousness in athletes.
Elderly athletes with a lifelong history of training and competing in endurance events like marathons, triathlons and iron man challenges can have
heart rhythm disturbances, known as arrhythmias.
Surgery is also used in older patients for treatment of pericardial diseases,
heart rhythm disturbances (pacemaker implantation), and cardiac tumors.
Heart rhythm disturbances are usually absent or mild, but atrial fibrillation is an occasional complication in dogs with Class III disease.
Potassium is often added to the fluids or the animal's diet to safeguard against muscle weakness and
heart rhythm disturbances that result from low electrolyte levels.
In the next few weeks, joint pain ensues with 15 percent of people developing neurologic abnormalities associated with Lyme disease and five percent of people developing
a heart rhythm disturbance called A-V block.