PMID- 1343631
OWN - NLM
STAT- MEDLINE
DCOM- 19940311
LR  - 20161123
IS  - 0914-5087 (Print)
IS  - 0914-5087 (Linking)
VI  - 22
IP  - 4
DP  - 1992
TI  - [Clinical and hemodynamic sequelae of mitral prostheses evaluated by Doppler 
      echocardiography].
PG  - 651-9
AB  - To determine the relative superiority of a prosthesis in the mitral position, in 
      vivo hemodynamics were examined by Doppler echocardiography, and the results were 
      compared with other types of mechanical mitral valves including 63 Bjork-Shiley 
      convexo-concave (BS) values, 30 Duromedics (DM) valves, and 58 Medtronic Hall 
      (MH) valves. For this comparison, the following indices were evaluated: peak 
      velocity of mitral flow (PV), mitral valve orifice area (MVA), mitral valvular 
      regurgitation, New York Heart Association (NYHA) classification, pulmonary 
      capillary wedge pressure (PC), cardiac index (CI) and valve-related 
      complications. On Doppler echocardiograms, PV ranged from 1.2 to 2.0 m/sec with a 
      mean of 1.6 m/sec. There was no evident relationship between the PV and the valve 
      size in each type of prosthesis, and no significant difference in the PVs among 
      the valves. The mean MVA was 2.6 cm2 (25 mm DM, 25 mm MH), which was regarded 
      satisfactory from a clinical standpoint. MVA increased with the increase in the 
      valve size in all types of valves, and of all sizes, MVA was larger in the DM and 
      MH groups than in the BS group. Similarly, the incidence of valvular 
      regurgitation was relatively low in all groups, and the degree of regurgitation 
      proved to be grade II or less in all cases. As for the clinical results, clinical 
      symptoms (NYHA) and hemodynamic states (PC, CI) improved postoperatively, with 
      the differences among the types of prosthetic valves being insignificant. The 
      incidences of thromboembolism, valvular thrombosis, valve failure and prosthetic 
      endocarditis were relatively low in all groups.(ABSTRACT TRUNCATED AT 250 WORDS)
FAU - Iwahashi, K
AU  - Iwahashi K
AD  - Second Department of Surgery, School of Medicine, Kobe University.
FAU - Ota, T
AU  - Ota T
FAU - Sato, H
AU  - Sato H
FAU - Kanda, H
AU  - Kanda H
FAU - Sugimoto, T
AU  - Sugimoto T
FAU - Okada, M
AU  - Okada M
FAU - Nakamura, K
AU  - Nakamura K
LA  - jpn
PT  - Comparative Study
PT  - Journal Article
PL  - Netherlands
TA  - J Cardiol
JT  - Journal of cardiology
JID - 8804703
SB  - IM
MH  - Blood Flow Velocity
MH  - *Echocardiography, Doppler
MH  - *Heart Valve Prosthesis
MH  - *Hemodynamics
MH  - Humans
MH  - Mitral Valve/physiopathology
MH  - Mitral Valve Insufficiency/diagnostic imaging/physiopathology
MH  - Prosthesis Failure
EDAT- 1992/01/01 00:00
MHDA- 1992/01/01 00:01
CRDT- 1992/01/01 00:00
PHST- 1992/01/01 00:00 [pubmed]
PHST- 1992/01/01 00:01 [medline]
PHST- 1992/01/01 00:00 [entrez]
PST - ppublish
SO  - J Cardiol. 1992;22(4):651-9.