ECG of the month. Normal and long P-R intervals. Sinus arrhythmia and a P-R interval that abruptly changes due to conduction down the fast atrioventricular (A-V) nodal pathway on some complexes and down the slow A-V nodal pathway on others.
Glancy
D Luke
DL
Department of Medicine, Louisiana State University Health Sciences Center, New Orleans, USA.
D000328:Adult; D001146:Arrhythmia, Sinus / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006801:Humans; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000503:physiopathology