PMID- 7688834
OWN - NLM
STAT- MEDLINE
DCOM- 19930910
LR  - 20071115
IS  - 0047-1860 (Print)
IS  - 0047-1860 (Linking)
VI  - 41
IP  - 4
DP  - 1993 Apr
TI  - [Recent progress in analysis of arrhythmias using electrocardiography].
PG  - 426-32
AB  - Recently, various novel techniques have been used in clinic to analyze 
      arrhythmias. These include vectorcardiography, body surface ECG mapping, 
      signal-averaged ECG, intracardiac electrogram and monophasic action potentials, 
      and 24-hour ECG recordings. We examined 24-hour ECG recordings in patients with 
      frequent ventricular premature contractions (VPCs), to identify VPCs possibly due 
      to delayed afterdepolarizations (DADs). We evaluated :1) the relationship between 
      VPC frequency and heart rate (HR); 2) the time course of changes in VPC frequency 
      following an abrupt and sustained increase in HR; and 3) the effects of oral 
      diltiazem on VPCs. Patients could be divided into 2 groups according to whether 
      VPCs increased with an increase in HRs (positive correlation or P group) or not 
      (non-positive correlation or NP group). In the P group, changes in VPCs after an 
      abrupt and sustained increase showed 2 types: 1) delayed-ascent type, in which 
      VPCs increased as the duration of HR increase was prolonged; and 2) 
      non-delayed-ascent type. Diltiazem suppressed almost only the VPCs of 
      delayed-ascent type. The VPCs of delayed-ascent type had several important 
      feature characteristic of DADs, suggesting these VPCs may be due to DADs.
FAU - Fujino, T
AU  - Fujino T
AD  - Department of Laboratory Medicine, Oita Medical University.
FAU - Ishida, S
AU  - Ishida S
FAU - Takahashi, N
AU  - Takahashi N
FAU - Nakagawa, M
AU  - Nakagawa M
FAU - Ito, M
AU  - Ito M
FAU - Saikawa, T
AU  - Saikawa T
LA  - jpn
PT  - English Abstract
PT  - Journal Article
PL  - Japan
TA  - Rinsho Byori
JT  - Rinsho byori. The Japanese journal of clinical pathology
JID - 2984781R
SB  - IM
MH  - Arrhythmias, Cardiac/*diagnosis
MH  - Cardiac Complexes, Premature/diagnosis
MH  - Electrocardiography/*methods
MH  - Electrocardiography, Ambulatory
MH  - Humans
MH  - Signal Processing, Computer-Assisted
EDAT- 1993/04/01 00:00
MHDA- 1993/04/01 00:01
CRDT- 1993/04/01 00:00
PHST- 1993/04/01 00:00 [pubmed]
PHST- 1993/04/01 00:01 [medline]
PHST- 1993/04/01 00:00 [entrez]
PST - ppublish
SO  - Rinsho Byori. 1993 Apr;41(4):426-32.