Page 437 - Cardiac Nursing

/09
pta
3 A
pta
6
/30
41
P
M
P
:57
a
a
ra
0-c
K34
p40
18_
L L LWB
LWB K34 0-c 18_ p40 0-4 19. qxd 6 /30 /09 7 7 :57 P M P a g g e e 41 3 A pta ra Inc . .
K34
LWBK340-c18_18_p400-419.qxd 6/30/09 7:57 PM Page 413 Aptara Inc.
0-4
19.
19.
Inc
qxd
High right atrial His bundle
catheter catheter
RF lesion site
for EAT
focus
RF catheter

Right ventricular
catheter

A

2ms
LAT

1-Map > 195 Points

90ms

L

1.00 cm

■ Figure 18-7 (A) (1) Diagram of catheter ablation of ectopic atrial tachycardia with focus on lateral wall of
right atrium. Red balls show site of ablation where the atrial tachycardia originates. (2) Image of ectopic atrial focus
obtained from 3-D mapping system (Biosense-Webster) (continued)
413