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Ashman phenomenon, also known as Ashman beats, describes a particular type of wide QRS complex, often seen isolated that is typically seen in atrial fibrillation. It is a type of cardiac aberrancy and it is more often misinterpreted as a premature ventricular complex . It is named for Richard Ashman (of New Orleans) (1890 –1969), [1] after ...
Medications, medical procedures, surgery [5] Frequency. ~3% [6] [7] [8] Supraventricular tachycardia ( SVT) is an umbrella term for fast heart rhythms arising from the upper part of the heart. [2] This is in contrast to the other group of fast heart rhythms – ventricular tachycardia, which start within the lower chambers of the heart. [2]
Paroxysmal nocturnal dyspnea or paroxysmal nocturnal dyspnoea ( PND) is an attack of severe shortness of breath and coughing that generally occurs at night. [1] It usually awakens the person from sleep, and may be quite frightening. [2] PND, as well as simple orthopnea, may be relieved by sitting upright at the side of the bed with legs ...
Tachycardia-induced cardiomyopathy. Tachycardia-induced cardiomyopathy (TIC) is a disease where prolonged tachycardia (a fast heart rate) or arrhythmia (an irregular heart rhythm) causes an impairment of the myocardium (heart muscle), which can result in heart failure. [1] [5] People with TIC may have symptoms associated with heart failure (e.g ...
Atrial tachycardia is a type of heart rhythm problem in which the heart 's electrical impulse comes from an ectopic pacemaker (that is, an abnormally located cardiac pacemaker) in the upper chambers ( atria) of the heart, rather than from the sinoatrial node, the normal origin of the heart's electrical activity .
Paroxysmal tachycardia is a form of tachycardia which begins and ends in an acute (or paroxysmal) manner. It is also known as "Bouveret-Hoffmann syndrome". [1] [2] [3]
Specialty. Medical genetics, cardiology. Familial atrial fibrillation is an autosomal dominant heart condition that causes disruptions in the heart's normal rhythm. [1] [2] This condition is characterized by uncoordinated electrical activity in the heart's upper chambers (the atria ), which causes the heartbeat to become fast and irregular.
Paroxysmal sympathetic hyperactivity ( PSH) is a syndrome that causes episodes of increased activity of the sympathetic nervous system. Hyperactivity of the sympathetic nervous system can manifest as increased heart rate, increased respiration, increased blood pressure, diaphoresis, and hyperthermia. [1] Previously, this syndrome has been ...