PMID- 2443582
OWN - NLM
STAT- MEDLINE
DCOM- 19871118
LR  - 20071115
IS  - 0386-2887 (Print)
IS  - 0386-2887 (Linking)
VI  - 16
IP  - 3
DP  - 1986 Sep
TI  - [Pulsed Doppler echocardiographic evaluation of hemodynamics in premature 
      ventricular contractions].
PG  - 637-47
AB  - To investigate hemodynamic changes in ventricular premature contractions (VPCs), 
      the blood flow velocities at the left ventricular (LV) outflow and inflow tracts 
      were analyzed by pulsed Doppler echocardiography in 23 patients with VPCs and in 
      two patients with ventricular parasystoles. Percent LV stroke volume of the 
      ectopic and the postectopic sinus beats to the other sinus beats and %LV inflow 
      volume of the sinus beats preceding ectopic beats to the other sinus beats were 
      calculated from the time integral of the blood flow velocity. The following 
      results were obtained. The %LV stroke volume of VPCs or %LV inflow volume of the 
      preceding sinus beats correlated positively with the coupling interval of VPCs (r 
      = 0.69, p less than 0.001 and r = 0.67, p less than 0.001, respectively). The %LV 
      stroke volume of VPCs correlated positively with %LV inflow volume of the 
      preceding sinus beats (r = 0.84, p less than 0.001). In some patients with VPCs 
      of the RBBB pattern and in one patient with VPCs of the LBBB pattern associated 
      with abnormal right axis deviation, the %LV stroke volume of VPC was much more 
      reduced. In patients with depressed rapid filling and increased atrial filling, 
      %LV stroke volume of the VPC or %LV inflow volume of the preceding sinus beat was 
      smaller than in the other patients with the same coupling interval of VPCs. In 
      VPCs of right ventricular (RV) origin, deterioration of RV hemodynamics was more 
      prominent than in those of LV origin, and vice versa. Increased LV stroke volume 
      was observed in postextrasystolic sinus beats, related to the coupling intervals 
      of VPCs. However, the sum of %LV stroke volume of VPC and the postextrasystolic 
      sinus beat decreased as the coupling intervals of VPC shortened. These results 
      suggest that not only the coupling interval and the origin of VPCs but the LV 
      diastolic behavior, as well, are important factors determining the hemodynamics 
      in VPCs. They also suggest that the increment of stroke volume in 
      postextrasystolic beats is more prominent in VPCs with shorter coupling 
      intervals, but the LV performance as a whole is more depressed in VPCs with a 
      shorter coupling intervals. In conclusion, pulsed Doppler echocardiography proved 
      a useful noninvasive technique for evaluating the hemodynamics of VPCs.
FAU - Takagi, S
AU  - Takagi S
AD  - First Department of Internal Medicine, Nagoya University School of Medicine.
FAU - Iwase, M
AU  - Iwase M
FAU - Jing, H X
AU  - Jing HX
FAU - Aoki, T
AU  - Aoki T
FAU - Yokota, M
AU  - Yokota M
FAU - Hayashi, H
AU  - Hayashi H
FAU - Sotobata, I
AU  - Sotobata I
LA  - jpn
PT  - English Abstract
PT  - Journal Article
PL  - Japan
TA  - J Cardiogr
JT  - Journal of cardiography
JID - 7801085
SB  - IM
MH  - Cardiac Complexes, Premature/*diagnosis/physiopathology
MH  - Echocardiography/*methods
MH  - Electrocardiography
MH  - Female
MH  - *Hemodynamics
MH  - Humans
MH  - Male
MH  - Myocardial Contraction
MH  - Stroke Volume
EDAT- 1986/09/01 00:00
MHDA- 1986/09/01 00:01
CRDT- 1986/09/01 00:00
PHST- 1986/09/01 00:00 [pubmed]
PHST- 1986/09/01 00:01 [medline]
PHST- 1986/09/01 00:00 [entrez]
PST - ppublish
SO  - J Cardiogr. 1986 Sep;16(3):637-47.