AC 3 Exam 1 Flashcards
What’s the normal range for PRI?
0.12 - 0.2 seconds
What’s the normal range for QRS?
0.04 - 0.12 seconds
What does SVT stand for?
Supraventricular tachycardia = above the ventricle tachycardia
Rapid stimulation of atria
What’s paroxysmal SVT?
Sudden start & stop of SVT
No intervention
How is SVT treated?
- Vagus nerve stimulation
- 6 mg adenosine
- 12 mg adenosine
- Synchronized cardiovert
What first line medication is used to treat SVT?
Adenosine
What determines the severity of SVT symptoms?
Ventricular response; rapid ventricular rate = more severe the symptoms
What’s the last resort treatment for persistent, recurrent SVT?
EP study with radiofrequency ablation
What are the desired outcomes of SVT treatment?
Decrease ventricular rate
Convert to NSR
Treat underlying cause
What other medications can be used to treat/manage SVT other than adenosine?
Beta Blockers
Calcium channel blockers (Cardizem, verapamil, -dipines)
What are some causes of PVCs?
MI, CHF, COPD, anemia, hypokalemia, hypomagnesemia, anesthesia, stress nicotine, caffeine, alcohol, infection, surgery, post-menopause with caffeine
When are we concerned about PVCs?
If > 6 PVCs/min consistently
How are PVCs treated?
Treat the underlying cause
What are some causes of VTach?
Ischemic heart disease, MI, HF, drug toxicity, hypotension, illicit drugs
What medication is used to treat VTach with a pulse?
Amiodarone; 150mg first and if that doesn’t work, 300mg
What medication is used to treat VTach without a pulse?
Epinephrine
What medication is given to Torsades de Pointes?
Magnesium sulfate
Pt comes to the ED with chest pain, palpitations, dizziness, and SOB. When the nurse got the EKG, it showed VTach but the pt still has a pulse and their BP is stable. What do you do?
O2, Amiodarone.
Ablation if nothing works
Pt is in VTach, was stable, so they got O2 and amio. But now their BP is 90/52. They still have a pulse. What do you need to do?
300mg Amio if not administered
Synchronized cardioversion at bedside
Pt who came in with VTach now does not have a pulse. What should you do?
Start CPR
Defibrillate
Pt is in VFib. Does that pt have pulse?
No. Along with that, no respirations, no perfusion because their cardiac output is shit due to heart not contracting
What kind of shock are you delivering to VTach pt with a pulse?
Synchronized cardiovert
What kind of shock are you delivering to VTach pt without a pulse?
Defib
What kind of shock are you delivering to VFib pt?
Defib