Atrial Fibrillation || 100% Correct Answers.

Atrial Fibrillation || 100% Correct Answers.
atrial fibrillation definition correct answers a supraventricular tachyarrhythmia defined by rapid,
irregular atrial activation
-->loss of coordinated atrial contraction
-->irregular electrical input to the AV node typically leads to sporadic ventricular contraction
rate

EKG hallmarks of afib correct answers no coordinated P waves (absent or very coarse/fine) &
irregularly irregular ventricular contraction rhythm

cause of afib correct answers anything that stretches the atrium
-reversible causes: thyrotoxicosis, alcohol intoxication, stimulant drugs, supraventricular
tachycardia, sleep apnea

classification of afib correct answers -new diagnosis (1st dx, regardless of duration or sx)
-paroxysmal (recurrent)
-persistent
-long-standing persistent
-permanent
-silent or asymptomatic

sequelae/morbidity of afib correct answers -thromboembolism-->stroke; dementia
-CHF
-cardiomyopathy
-angina
-hospitalization
-mortality

risk of stroke in untreated a-fib correct answers *Very high= previous ischemic stroke
*High= > 65 y/o and 1 other risk factor from: HTN, DM, HF, left ventricular dysfunction
*Moderate= > 65 y/o with no other risk factors; < 65 y/o with other risk factors
*Low= < 65 y/o with no other risk factors

epidemiology of afib correct answers **most common sustained cardiac arrhythmia
-increasing risk w/ age
-

prognosis of afib correct answers -mortality in people with Afib is twice that of the general
population
- linked w/ the severity of underlying disease

risk factors for new onset afib correct answers -HTN
-diabetes
-CHF
-valvular heart disease