Dysrhythmias Flashcards
What is supraventricular tachycardia? SVT
Rapid stimulation of atrial tissue occurs at rate 100-280 bpm
What is atrial fibrillation? Afib
Most common dysrhythmia
Atrial fibrosis and loss of muscle mass
Common with HTN, HF, CAD
Cardiac output decrease 20-30%
Afib
Vfib
Sinus tachycardia
Normal sinus rhythm
Ventricular Asystole
Must perform CPR
Sinus Brady
Vtach
What do you need to assess for afib?
Fatigue, weakness, SOB, dizziness
Assess for anxiety, syncope, palpitation, chest pain, HTN
High risk for PE, VTE, stroke
Tx for afib
what drugs are used?
Cardio version
Percutaneous radio frequency catheter ablation
Bi-ventricular pacing
Surgical maze procedure
Drugs:
Metoprolol
Digoxin
Amiodarone
Diltiazem
Which dysrhythmia is more life threatening?
A. Ventricular
B. Atrial
Ventricular
What are common ventricular dysrhythmias?
Premature ventricular complexes
Vtach
Vfib
Ventricular asystole
Premature ventricular complexes
Tx for ventricular tachycardia:
Stable vs unstable
Stable:
— oxygen
— cardio version
— radio frequency cath ablation
— implantable cardioverter debrillation
**Drugs used:
— AMIODARONE
— LIDOCAINE
— MAG SULFATE
Unstable:
— can cause cardiac arrest
— treated the same way as Vfib
— ASSESS AIRWAY BREATHING CIRCULATION
— assess LOC
— asses O2 level
Tx of Vfib (ventricular fibrillation):
LIFE THREATENING
— no cardiac output or pulse
— blood is no longer being pumped out of heart and BRAIN IS NOT RECEIVING BLOOD
— CM of CAD
— patients with MI are high risk
What is the first priority regarding treatment of ventricular fibrillation?
Defibrillate the patient immediately
— CPR
— airway management
Treatment for ventricular asystole:
FULL CARDIAC ARREST no cardiac output or perfusion to rest of body
— manage airway
— CPR
** DO NOT DEFIBRILLATE
Why?:
There is no electrical activity — defibrillation will not do anything for the patient
What is one of the most important things to teach HF patients?
Avoid caffeine — unnecessary elevation of HR
