PMID- 12062267
OWN - NLM
STAT- MEDLINE
DCOM- 20020827
LR  - 20191210
IS  - 1010-7940 (Print)
IS  - 1010-7940 (Linking)
VI  - 21
IP  - 5
DP  - 2002 May
TI  - Angiographic evaluation of the luminal changes in the radial artery graft in 
      coronary artery bypass surgery: a concern over the long-term patency.
PG  - 800-3
AB  - OBJECTIVE: The radial artery graft (RA) still involves two unsolved problems, 
      namely, vasospasm and intimal hyperplasia, although satisfactory early and 
      mid-term outcomes have been obtained recently. METHODS: Two hundred patients 
      underwent coronary artery bypass surgery with RA between October,1996 and 
      December,2000. We made a comparison of the luminal diameters at early and 
      mid-term periods in 23 patients who underwent mid-term angiographies after a mean 
      follow-up of 27 months. The proximal anastomoses of the RA were the ascending 
      aorta in these patients. The G/N ratio was determined as a ratio of the luminal 
      diameter of the graft to that of the revascularized coronary artery so as to 
      evaluate the luminal discrepancy between the graft and the native artery. 
      RESULTS: In the 122 patients who underwent angiographies about one month after 
      the operation, the patency rate was 99% (144 of 145) in the RA, 97% (139 of 143) 
      in the left internal thoracic artery graft (LITA), 96% (75 of 78) in the 
      saphenous vein graft (SV). In the 23 patients who underwent mid-term 
      angiographies, the patency rate was 91% (24 of 26) in the RA, 100% (23 of 23) in 
      the LITA, and 83% (20 of 24) in the SV. The luminal diameters of the RA and LITA 
      significantly increased from 2.15 to 2.52 mm, and from 1.75 to 1.97 mm, 
      respectively. The luminal change from 3.78 to 3.33 mm in the SV was not 
      significant. The G/N ratios changed from 1.10 to 1.31, from 1.01 to 1.13, and 
      from 2.05 to 1.86 in the RA, LITA, and SV, respectively. The change of the RA 
      alone was statistically significant. CONCLUSIONS: The angiographic early patency 
      rate was almost the same in three kinds of graft material, but the mid-term 
      patency rate of the RA was between those of the LITA and SV. The mid-term luminal 
      dilatation of the RA could involve two conflicting characteristics, namely, a 
      good intimal function and a propensity to increase in the luminal discrepancy. 
      Therefore, a further observation is required to evaluate whether the clinical 
      outcome of the RA could remain as good as that of the LITA in the long-term 
      period.
FAU - Ikeda, Masahiro
AU  - Ikeda M
AD  - Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, 
      Fukui 910-0833, Japan. ikeda@toyama-med.jrc.or.jp
FAU - Ohashi, Hirokazu
AU  - Ohashi H
FAU - Tsutsumi, Yasushi
AU  - Tsutsumi Y
FAU - Hige, Katsuaki
AU  - Hige K
FAU - Kawai, Takahiro
AU  - Kawai T
FAU - Ohnaka, Masateru
AU  - Ohnaka M
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PL  - Germany
TA  - Eur J Cardiothorac Surg
JT  - European journal of cardio-thoracic surgery : official journal of the European 
      Association for Cardio-thoracic Surgery
JID - 8804069
SB  - IM
MH  - Aged
MH  - Anastomosis, Surgical
MH  - Coronary Angiography
MH  - *Coronary Artery Bypass
MH  - Coronary Disease/physiopathology/*surgery
MH  - Coronary Vessels/surgery
MH  - Female
MH  - Follow-Up Studies
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Postoperative Period
MH  - Radial Artery/anatomy & histology/diagnostic imaging/*transplantation
MH  - *Vascular Patency
EDAT- 2002/06/14 10:00
MHDA- 2002/08/28 10:01
CRDT- 2002/06/14 10:00
PHST- 2002/06/14 10:00 [pubmed]
PHST- 2002/08/28 10:01 [medline]
PHST- 2002/06/14 10:00 [entrez]
AID - S1010794002000775 [pii]
AID - 10.1016/s1010-7940(02)00077-5 [doi]
PST - ppublish
SO  - Eur J Cardiothorac Surg. 2002 May;21(5):800-3. doi: 
      10.1016/s1010-7940(02)00077-5.