Is a drop in thoracic impedance good or bad?
Bad = More fluid
Which generation shows CRT interrupt
Ilivia onwards
What ratio of non delivered events must occur before interrupt shows?
20-48
HR and HRV do what in HF patients
HR increase
HRV decrease
What 8 things can i see on HM
LV IEGM Impedance Thoracic PVCs/h Atrial Burden Activity HRV HR CRT pacing
How is HRV calculated?
P to P
Whats the magic number for CRT success
96/97%
What do blanks in HRV graph mean?
Pacing
Most common cause of CRT loss
1 Atrial Tach
2 Loss of LV capture
Lead I is positive when pacing from…
The right
Lead III is negative when pacing from…
The right
Lead III is positive when pacing from…
The Left
Lead I is negative when pacing from…
The left