C	FDA	C54450	Patient Problem Codes FDA CDRH	C2881	1721	ARRHYTHMIA			An electrocardiographic finding of any variation from the normal rate or rhythm (which may include the origin of the impulse and/or its subsequent propagation) in the heart.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50466	1729	ATRIAL FIBRILLATION		An arrhythmia in which minute areas of the atrial myocardium are in various uncoordinated stages of depolarization and repolarization; instead of intermittently contracting, the atria quiver continuously in a chaotic pattern, causing a totally irregular, often rapid ventricular rate.	An arrhythmia characterized by uncoordinated atrial myocardium activation due to multiple reentry circuits with consequent deterioration of atrial mechanical function. Instead of intermittently contracting, the atria quiver continuously in a chaotic pattern, causing a totally irregular, often tachycardia ventricular rate. On the ECG it is described by the replacement of consistent P waves by rapid oscillations or fibrillatory waves that vary in size, shape, and timing, associated with an irregular, frequently rapid ventricular response when atrioventricular conduction is intact.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C51224	1730	ATRIAL FLUTTER			An arrhythmia characterized by organized rhythmic contraction of the atria which is generally at a rate of 200-300 beats per minute. Atrial Flutter is characterized by a sawtooth pattern of regular atrial activation called flutter waves on the electrocardiogram, particularly visible in leads II, III, aVF and v1.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C35481	1731	ATRIAL TACHYCARDIA			An electrocardiographic finding of a cardiac rhythm greater than 100 beats per minute that originates from the atria or sinoatrial node.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50501	2627	COMPLETE HEART BLOCK			An electrocardiographic finding of complete blockage of electrical impulse conduction from the atria to the ventricles.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50543	1817	EKG/ECG CHANGES	CHANGES IN EKG/ECG|ECG/EKG CHANGES	Changes in cardiac electrical activity.	An electrocardiographic finding of a change in cardiac electrical activity.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50542	1826	ELECTRO-MECHANICAL DISSOCIATION	DISSOCIATION, ELECTRO-MECHANICAL	Continued electrical rhythmicity of the heart in the absence of effective mechanical function.	An electrocardiographic finding of the presence of cardiac electrical rhythm without a proper response of the myocardial tissue and mechanical cardiac output.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50553	2628	EXIT BLOCK			An electrocardiographic finding of a blockage of electrical conduction within the sinoatrial node resulting in the prolongation or failure (intermittent or complete) of impulse conduction from the sinoatrial node to the surrounding atrial tissue.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C61395	3163	R ON T PHENOMENON		The occurrence of a premature ventricular complex near the peak of the T wave in electrocardiography; it may lead to ventricular tachycardia or fibrillation.	An electrocardiographic finding in which the R wave occurs on top of the T wave; this can trigger ventricular fibrillation or ventricular tachycardia.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C41330	2487	ST SEGMENT DEPRESSION	DEPRESSION, ST SEGMENT		An electrocardiographic finding of an ST segment below the baseline.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50540	2059	ST SEGMENT ELEVATION	ELEVATION, ST SEGMENT	Evaluation of the interval from the end of ventricular depolarization to the onset of the T wave; it is usually isoelectric in normal subjects.	An electrocardiographic finding of ST segment elevation above the baseline.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50779	2107	TORSADES-DE-POINTES		Fringe of pointed tips; An atypical rapid ventricular tachycardia with periodic waxing and waning of amplitude of the QRS complexes on the electrogram as well as rotation of the complexes about the isoelectric line.	An electrocardiographic finding of atypical rapid ventricular tachycardia with periodic waxing and waning of amplitude of the QRS complexes on the electrocardiogram as well as rotation of the complexes about the isoelectric line.	C50802	2132	VENTRICULAR TACHYCARDIA
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50799	2130	VENTRICULAR FIBRILLATION	FIBRILLATION, VENTRICULAR	Arrhythmia characterized by fibrillary contractions of the ventricular muscle due to rapid repetitive excitation of myocardial fibers without coordinated contraction of the ventricle.	An arrhythmia characterized by rapid, usually more than 300 bpm (cycle length: 180 ms or less), grossly irregular ventricular rhythm with marked variability in QRS cycle length, morphology, and amplitude.	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50800	2131	VENTRICULAR FLUTTER	FLUTTER, VENTRICULAR	A ventricular tachyarrhythmia characterized electrocardiographically by smooth undulating waves with QRS complexes merged with T waves, a rate of approximately 250 per minute.	An electrocardiographic finding of a ventricular tachyarrhythmia characterized by smooth undulating waves with QRS complexes merged with T waves at a rate of approximately 250 per minute.	C50802	2132	VENTRICULAR TACHYCARDIA
C	FDA	C54450	Patient Problem Codes FDA CDRH	C50802	2132	VENTRICULAR TACHYCARDIA		An abnormally rapid ventricular rhythm with aberrant ventricular excitation, usually in excess of 150 beats per minute.	An arrhythmia characterized by 3 or more consecutive complexes in duration emanating from the ventricles at a rate of greater than 100 bpm (cycle length: less than 600 ms).	C54027	2688	PATIENT PROBLEM/MEDICAL PROBLEM