syncope Flashcards Preview

CSI > syncope > Flashcards

Flashcards in syncope Deck (13):
1

labs

troponin
D-dimer
CBC
blood glucose
EKG
UCG
head CT
BNP
ECHO
tox screen

2

syncope def

Abrupt, transient complete loss of consciousness and postural tone

3

To remain conscious, the following are needed:

Organized cortical electrical activity
Glucose
Oxygen
Functional delivery system for O2 and glucose:
-Adequate and open vascular conduits
-Adequate BP

4

ddx

Hypotension (most common cause)
Poor filling, low EDV
Insufficient emptying , elevated ESV
Heart rate disorders
Vasodilation
Generalized seizures (electrical activity)
Hypoxemia
Obstructed vascular conduits

5

more specific ddx

Dysrhythmia*
Pulmonary embolism
Hypoglycemia
Neurocardiogenic syncope*
Dehydration*
Seizure*
Medications *

6

Life Threatening ddx

Dysrhythmia/cardiogenic syncope
Pulmonary Embolism
Hypoglycemia
Seizure
Hypoxemia
stroke: TIA, CVA

7

neurocardiogenic causes

Lightheadedness
Anxiety
Nausea
Dehydration
Diaphoresis
Fear
Prolonged standing
RAPID NORMALIZATION OF CONSCIOUNESS
ABSENCE OF HEART DISEASE

8

cardiogenic

Syncope secondary from disorder arising from the heart

Arrhythmias
-Most tachyarrythmias will not cause syncope due to AV node controlling limit of contraction
Valvular heart disease
Heart disease (HF or CAD)

Pre-existant cardiac condition increases risk
Exertional syncope or supine more likely to be from cardiac origin


9

testing

Orthostatic BP
ECG/EKG
Echocardiogram
CBC, BMP, Serum Mag
CT head
Pregnancy test
Vascular doppler of LE
CXR
Invasive EP studies

10

syncope

Diaphoresis
Chest pain
Palpitations
Dyspnea
CAD
Syncope with prolonged standing

Convulsive syncope

11

seizure

Tongue cut
Head turning
Posturing
Loss of bladder control

Postictal confusion >1min

12

syncope tx

IV fluids
Anti-dysrhythmic
Anxiolytic
Lifestyle modifications

13

pts dx

a fib