Page 201 - Color Atlas Of Pathophysiology (S Silbernagl Et Al, Thieme 2000)

E. Another AP Triggered Shortly Before or at the End of an Action Potential (AP)

Stimulus
mV Absolutely refractory Relatively III
refractory
+20
0
AP duration
shortened
–40 of Cardiac Rhythm
Refractory period
–100 shortened
0 0.2 0.3 0.4 0.5
Zeit (s)
Rise of dV/dt
less steep Spread of excitation
slowed down Abnormalities
F. Block in AV Node: Reentry with Tachycardia and Drug Treatment
(after Noble)
Tissue damage Treatment a
Normal Plate 7.8
Reentry Treatment b
ϑ ϑ
Refractory
ϑ

a
Block
b

Tachycardia

G. Reentry in Wolff-Parkinson-White Syndrome

Accessory pathway Ectopic atrial
betw. atrium and ventricle extrasystole Reentry
1 2 3
Tachycardia

Refractory
after Wagner and Ramo)
ECG

PR intervall P
δ wave shortened 191

Silbernagl/Lang, Color Atlas of Pathophysiology © 2000 Thieme
All rights reserved. Usage subject to terms and conditions of license.