Device Cases Flashcards
What rhythm?
VT
What is happening here?
VT -> Successful ATP
What is happening here
VT -> 1 failed shock -> 1 successful shock (type 2 break ) -> 1 more shock after this due to redetection
What’s happened here?
VT -> Terminated with ATP
Arrhythmia?
SVT
Arrhythmia?
VT, Atrial undersensing
Arrhythmia?
Atrial fibrillation with rapid ventricular response -> Shock
What going on?
RV lead impedance spike, ?Fracture
What’s going on?
Ventricular lead oversensing
What’s going on?
Ventricular lead Undersensing
What factors affect sensing?
-insulation break
-wire fracture
-electrode placement within the heart
-lead polarity
-EMI
Review battery depletion
Review approach to failure to capture
Diagnosis
Atrial lead undersensing
Diagnosis
T wave oversensing -> inhibition of pacing
Diagnosis?
Tracking Atrial Tachycardia (Plan: VVIR, Program Mode switch)
Diagnosis?
T wave oversensing (Train track sign), Plan: Decrease ventricular sensing, extend post ventricular blanking, Lead revision)
Diagnosis?
T wave oversensing (Train track sign), Plan: Decrease ventricular sensing, extend post ventricular blanking, Lead revision)
Diagnosis?
Atrial far field oversensing resulting in innappropriate labeling of atrial arrhythmia
Diagnosis?
Oversensing noise: Plan: Look at impedance, CXR -> Lead revision
Diagnosis?
Oversensing EMI
Diagnosis?
Oversensing Extracardiac noise
Diagnosis?
Shock for Afib with RVR
Diagnosis?
VT initiated by PVC
