Flashcards in Syncope Deck (13):
Syncope versus TIA?
Global hypoperfusion versus regional ischemia
Orthostatic hypertension occurs from what diseases?
2. Parkinson's disease
3. Idiopathic dysautonomia
Usual causes of syncope?
1. Excess vagal activity
2. Orthostatic hypotension
3. Arrhythmias and cardiac outflow obstruction
Causes episodes of syncope precipitated by physical or emotional stress?
Prodromal signs of Vasovagal syncopic episode?
Nausea, yawning, diaphoresis
Activities that can cause vasovagal syncopic episodes?
Mucturition, defecation, coughing
Pressure over the carotid sinus can cause excess vagal activity that can result in?
Sinus bradycardia, sinus arrest, AV block (less commonly, a fall in arterial pressure without cardiac swelling)
Postural drop in systolic blood pressure by more than 20 it increase in pulse over 10
Causes of orthostatic hypotension?
1. Hypovolemia (diarrhea, vomiting, Addison's disease, hemorrhage)
2. Impaired Autonomic response (Diabetes, alcohol)
3. Iatrogenic (from antihypertensives)
Etiologies of cardiogenic syncope?
1. Structural (aortic stenosis, hypertrophic Obstructive cardiomyopathy)
2. PE, pulmonary hypertension
3. Arrhythmias (Bradyarrhythmias most common)
Sick sinus syndrome?
Tachycardia – bradycardia syndrome
Sinus bradycardia/rest alternating with supraventricular tachycardia (Usually AFIB)
Types of arrhythmias that are more likely to produce palpitations than syncope?
Tacky arrhythmias – afib, a-flutter, SVT, VT, VF