multifocal atrial tachycardia…

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heart, section, the middle, heart, multifocal atrial tachycardia describes a rapid heart rate, inappropriate electrical impulses arriving, lower heart chambers, ventricles, from multiple locations, the upper heart chambers, atria, electrical impulses, in the heart begin, in the right atrium, in an area, the sinoatrial node, sinus node, sa node, natural "pacemaker", the heart, node controls the heart's rhythm, is essential to sustaining life, electrical impulses, conducted throughout the heart, heart responds to each impulse, a contraction, occurs between 60, 100 times per minute, normal heart rate in adults is 60 to 100 beats per minute, normal rate is faster in children, in multifocal atrial tachycardia, mat, multiple locations, the atria "fire", initiate an electrical impulse, most of these impulses, conducted, ventricles, a rapid heart rate, anywhere from 100 to 250 beats per minute, very rapid rate greatly increases the heart's workload, very rapid rates, decrease the amount, time the heart has to fill, blood, reduces the flow of blood, brain, mat, common in people aged 50, over, seen in patients admitted, intensive care unit, patients need critical care, mat, associated, conditions that reduce the amount, oxygen, in the blood, all types of respiratory failure, chronic pulmonary obstructive disease, copd, bacterial pneumonia, congestive heart failure, lung cancer, pulmonary embolism, mat is also associated, coronary heart disease, surgery, the last 6 weeks, overdose of theophylline, diabetes, sepsis, widespread systemic infection, sensation of feeling the heart beat, palpitations, light-headedness, fainting, shortness of breath, chest tightness, infants, have weight loss, failure to thrive, additional symptoms that associated, dizziness, breathing difficulty, lying down, an examination shows a heart rate of 100 to 180 beats per minute, blood pressure is normal, signs of poor circulation, tests that reveal mat, ecg, continuous monitoring, 24-hour holter monitor, hospitalized patients, heart rhythm is monitored 24 hours a day, telemetry, long-term loop recorders, outpatients who, have mat not detected, a holter monitoring session, receive these portable systems, allow the person to trigger the recording, symptoms appear, electrophysiologic study, eps, doubts persist, the the diagnosis, additional arrhythmias, complicate diagnosis, recommend an eps, an eps, wires, inserted, veins up to heart to study the cardiac conduction system, underlying conditions, precipitate mat, improving oxygenation, administering intravenous magnesium, discontinuing certain medications, theophylline, enough to terminate the mat, heart rate controlling medications, calcium channel blockers, verapamil, diltiazem, selective beta-blockers, mat is controllable underlying condition, controlled, reduced pumping action, the heart, heart failure, cardiomyopathy, irregular heartbeat is associated, mat symptoms, symptoms worsen, not improve, new symptoms develop, to reduce the risk of developing mat, promptly treat the disorders that cause it.