SVT Flashcards
Where does the anomaly initiate in SVT
Atria or AV node
What does a narrow vs wide QRS indicate in SVT
Narrow: ventricles are activated at the purkinje fibers
Wide: Left or right conduction blocks. Ventricles are conducted by accessory pathway
What is paroxysmal SVT and types
A sudden stop and restart of SVT anomaly
AV node recently, AV accessory pathway, atrial tachycardia
HR for most SVT
150-250
Causes and Risk factors of SVT
Physiologic: Exertion, stress, illness
Pathological: Reentrant arrhythmia, large reentry circuits, focal atria tachycardia
RF: Age, CAD, smoking, thyroid, DM, anxiety, stress
S/S of SVT
Palpitations, Chest pain, dyspnea, syncope, cardiac arrest
Diagnosis of SVT
EKG, exercise testing, electrophysiology study, screen for heart disease, ambulatory EKG
SVT treatment plan
Electrophysiology study, ablation, catheterization
Sinus tachycardia physiologic and non-physiologic causes
Phys: exercise, stress, illness
Nonphys: inappropriate rate increase
Sinus tachycardia symptoms
Fatigue, dizziness, syncope, palpitations, chest pain, headaches, GI upset
Diagnosis and treatment plan for sinus tach
EKG
Treat underlying cause
BB or CCB
Ablation or heart cath
What are the causes and symptoms of postural orthostatic tachycardia (POTS)
Autonomic dysfunction
Symptoms like sinus tach
Diagnosis and treatment for POTS
D: HR increases by 30bpm or >120 within 10mins of standing without hypotension
T: volume expansion, salt supplements, fludrocortisone, compression stockings, alpha agonist (Midodrine), exercise training
What is focal atria tachycardia
A one spot focused anomaly, can appear similar to sinus tachycardia on the EKG with the exception of varying p wave morphology
Narrow P wave in focal atria tachycardia suggests which location of the anomaly?
Atrial septum
