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Premature Atrial ContractionAka: PAC
- Causes
- Usually idiopathic and benign
- Catecholamine excess
- Hypoxia
- Myocardial Ischemia
- Congestive Heart Failure
- Acid-base disturbance
- Electrolyte abnormality
- Signs: EKG Findings
- No compensatory pause
- P Wave included in Extrasystole
- Associated with right bundle branch
- Normal narrow QRS with normal axis
Atrial Premature Complexes (C0033036) | |
|---|---|
| Definition (MSH) | A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals originating from ectopic atrial sites. The ectopic signals may or may not conduct to the HEART VENTRICLES. Atrial premature complexes are characterized by premature P waves on ECG which are different in configuration from the P waves generated by the normal pacemaker complex in the SINOATRIAL NODE. |
| Definition (NCI) | Ectopic impulses originating in the atria. |
| Concepts | Disease or Syndrome (T047) |
| ICD9 | 427.61 |
| English | APC, ATRIAL BEAT PREMATURE, Atrial ectopic, Atrial Ectopic Beat, Atrial Ectopic Beats, Atrial Extrasystole, Atrial Extrasystoles, Atrial premature beats, Atrial Premature Complex, Atrial Premature Complexes, Atrial Premature Complices, Atrial premature contractions, Atrial premature depolarisation, Atrial premature depolarization, Atrial premature systoles, Ectopic atrial beats, EXTRASYSTOLES ATRIAL, EXTRASYSTOLES SUPRAVENTRICULAR, PAC, PAC - Premature atrial contraction, Premature Atrial Beat, PREMATURE ATRIAL BEATS, Premature Atrial Complex, Premature Atrial Complices, PREMATURE ATRIAL CONTRACTION, Premature atrial contractions, Premature Supraventricular Beat, Premature Supraventricular Beats, Supraventriciular premature contraction, Supraventricular Ectopic Beats, SUPRAVENTRICULAR EXTRASYSTOLES, Supraventricular premature beats, Supraventricular premature contraction |
| Spanish | complejo auricular prematuro, contraccion auricular prematura, despolarizacion auricular prematura, extrasistoles auriculares, extrasistoles supraventriculares, latidos auriculares ectopicos, sistoles auriculares prematuras |
| Parent Concepts | cardiac arrhythmia (C0003811), Premature Cardiac Complex (C0340464), Supraventricular arrhythmia (C0428974), Atrial Premature Complexes (C0033036), Aberrant premature complexes (C0428987), Ambiguous concept (C1274012), Ectopic rhythm (C1399226), Duplicate concept (C1274013) |
| Sources | COSTAR, CST, DXP, ICD9CM, LNC, MSH, MTH, NCI, NDFRT, SCTSPA, SNOMEDCT Derived from the NIH UMLS (Unified Medical Language System) |
