Document Detail

Noninvasive assessment of internal thoracic artery for reoperative coronary artery surgery.
MedLine Citation:
PMID:  1447269     Owner:  NLM     Status:  MEDLINE    
To determine whether previous sternotomy alters internal thoracic artery (ITA) anatomy and flow characteristics, a duplex scanner was used for noninvasive evaluation of the ITA in 59 patients who were scheduled for reoperative coronary artery bypass surgery. The left ITA was insonated through the third intercostal space by use of a duplex scanner (5.0 MHz probe). Measurements of the ITA diameter (mm) and peak systolic velocity (cm/sec) were obtained; ITA flow was calculated from velocity and cross-sectional area. These findings were compared with the values obtained from 105 patients who were scheduled to undergo first-time (primary) coronary artery surgery during the same time period. In the reoperative group, preoperative mean ITA diameter was 2.26 +/- 0.06 mm; this was not significantly different from the primary group's mean ITA diameter of 2.15 +/- 0.04 mm (p = 0.09). Mean peak systolic velocity was 79.9 +/- 2.4 cm/sec and calculated systolic blood flow was 204.6 +/- 13.1 ml/min in the reoperative patients, as compared with 83.3 +/- 2.1 cm/sec and 189.5 +/- 8.6 ml/min in the primary group, respectively. Values were similar in both groups for the peak systolic velocity (p = 0.31) and calculated systolic blood flow (p = 0.32). These results suggest that previous heart surgery or sternotomy does not adversely affect ITA anatomy and flow characteristics. We conclude that ultrasonic imaging is an easily applicable technique for preoperative assessment of ITA in patients who have undergone previous sternotomy.
C C Canver; R C Fiedler; E L Hoover; J J Ricotta; R M Mentzer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of cardiovascular surgery     Volume:  33     ISSN:  0021-9509     ISO Abbreviation:  J Cardiovasc Surg (Torino)     Publication Date:    1992 Sep-Oct
Date Detail:
Created Date:  1992-12-24     Completed Date:  1992-12-24     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0066127     Medline TA:  J Cardiovasc Surg (Torino)     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  534-7     Citation Subset:  IM    
Department of Surgery, Dartmouth Medical School, Dartmouth-Hitchcock Medical Center, Lebanon, NH.
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MeSH Terms
Aged, 80 and over
Angiography / standards
Blood Flow Velocity
Coronary Artery Bypass*
Feasibility Studies
Middle Aged
Preoperative Care / standards*
Thoracic Arteries / anatomy & histology,  physiology,  ultrasonography*
Ultrasonography / instrumentation,  methods,  standards*

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