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CHAD Score
Aka: CHAD Score, CHADS Score, CHADS2- See Also
- Indication
- Assess Risk of stroke with Atrial Fibrillation
- Contraindications: Conditions that if present may trump the decision to anticoagulate
- Valvular heart disease
- Prior peripheral embolism
- Intracardiac thrombus
- Hyperthyroidism
- Criteria (mnemonic: CHADS)
- Congestive Heart Failure (1 point)
- Relative risk of Stroke or TIA: 1.4
- Hypertension (1 point)
- Relative risk of Stroke or TIA: 1.6
- Age over 75 years (1 point)
- Relative risk of Stroke or TIA: 1.4
- Diabetes Mellitus (1 point)
- Relative risk of Stroke or TIA: 1.7
- Stroke or TIA history (2 points)
- Mitral Stenosis or prosthetic Heart Valve carry similar risk and also indicate Warfarin
- Relative risk of Stroke or TIA: 2.5
- Congestive Heart Failure (1 point)
- Disadvantages
- Does not account for atrial enlargement (higher risk of CVA)
- Interpretation
- References
Atrial Fibrillation (C0004238) |
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| Definition (NCI) | A supraventricular 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. (NCI) |
| Definition (NCI) | 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. |
| Definition (NCI) | A disorder characterized by a dysrhythmia without discernible P waves and an irregular ventricular response due to multiple reentry circuits. The rhythm disturbance originates above the ventricles. |
| Definition (CHV) | rapid tremor and shake of upper chambers of the heart |
| Definition (CHV) | rapid tremor and shake of upper chambers of the heart |
| Definition (CHV) | rapid tremor and shake of upper chambers of the heart |
| Definition (CHV) | rapid tremor and shake of upper chambers of the heart |
| Definition (CHV) | rapid tremor and shake of upper chambers of the heart |
| Definition (CHV) | rapid tremor and shake of upper chambers of the heart |
| Definition (MEDLINEPLUS) |
An arrhythmia is a problem with the speed or rhythm of the heartbeat. Atrial fibrillation (AF) is the most common type of arrhythmia. The cause is a disorder in the heartâs electrical system. Often, people who have AF may not even feel symptoms. But you may feel
AF can lead to an increased risk of stroke. In many patients, it can also cause chest pain, heart attack, or heart failure. Doctors diagnose AF using family and medical history, a physical exam, and a test called an electrocardiogram (EKG), which looks at the electrical waves your heart makes. Treatments include medicines and procedures to restore normal rhythm. NIH: National Heart, Lung, and Blood Institute |
| Definition (CSP) | disorder of cardiac rhythm characterized by rapid, irregular atrial impulses and ineffective atrial contractions. |
| Definition (NCI) | A supraventricular 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. |
| Definition (MSH) | Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation. |
| Concepts | Pathologic Function (T046) |
| MSH | D001281 |
| ICD9 | 427.31 |
| ICD10 | I48.0 |
| SnomedCT | 49436004, 155364009, 266306001 |
| English | Atrial Fibrillations, Auricular Fibrillation, Auricular Fibrillations, Fibrillations, Atrial, Fibrillations, Auricular, FIBRILLATION ATRIAL, ATRIAL FIBRILLATION, AURICULAR FIBRILLATION, Auricular fibrillation, Fibrillation, Atrial, Fibrillation, Auricular, AF, atrial fibrillation, atrial fibrillation (diagnosis), a fib, af, afib, Afib, AFib, Fibrillation atrial, Atrial Fibrillation [Disease/Finding], Fibrillation;atrial, atrial fibrillation (AF), auricular fibrillations, atrial fibrillations, Atrial fibrillation, AF - Atrial fibrillation, Atrial fibrillation (disorder), atrium; fibrillation, auricular; fibrillation, fibrillation; atrial or auricular, Fibrillation - atrial, Atrial Fibrillation, auricular fibrillation |
| French | FIBRILLATION AURICULAIRE, FA, AFib, Fibrillation auriculaire, Fibrillation atriale |
| German | VORHOFFLIMMERN, AF, Afib, Flimmern Vorhof, Herzohrflimmern, HERZVORHOFFLIMMERN, Vorhofflimmern, Aurikuläres Flimmern |
| Portuguese | FIBRILACAO AURICULAR, FA, FIBRILHACAO AURICULAR, Fibrilhação auricular, Fibrilação Atrial, Fibrilação Auricular |
| Spanish | FIBRILACION AURICULAR, FA, Fibrilación atrial, Atrial fibrillation, Fibrillation - atrial, AURICULAR, FIBRILACION, fibrilación auricular (trastorno), fibrilación auricular, Fibrilación auricular, Fibrilación Atrial, Fibrilación Auricular, Fibrilacion Atrial, Fibrilacion Auricular |
| Dutch | AFib, AF, atriumfibrillatie, hartoorfibrilleren, atrium; fibrilleren, auriculair; fibrilleren, fibrilleren; atrium of auriculair, atriale fibrillatie, Atriumfibrillatie, Boezemfibrillatie, Fibrillatie, atrium-, Fibrillatie, boezem-, Fibrilleren, boezem- |
| Swedish | Förmaksflimmer |
| Japanese | ｼﾝﾎﾞｳｻｲﾄﾞｳ, 心房細動, 心房性細動 |
| Finnish | Eteisvärinä |
| Russian | USHKA PREDSERDIIA FIBRILLIATSIIA, PREDSERDII FIBRILLIATSIIA, ПРЕДСЕРДИЙ ФИБРИЛЛЯЦИЯ, УШКА ПРЕДСЕРДИЯ ФИБРИЛЛЯЦИЯ |
| Czech | Fibrilace ouška, Fibrilace síní, fibrilace síní, síňová fibrilace, FiS |
| Italian | Fibrillazione auricolare, Fibrillazione atriale |
| Croatian | ATRIJ, FIBRILACIJA |
| Polish | Migotanie przedsionków |
| Hungarian | AFib, Fibrillatio atrialis, Pitvarfibrillatio |
| Sources |
Derived from the NIH UMLS (Unified Medical Language System) |