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Asian Cardiovasc Thorac Ann 2007;15:486-492
© 2007 Asia Publishing EXchange Ltd

ORIGINAL CONTRIBUTIONS

Age Deteriorates Palmar Microcirculation Following Radial Artery Harvesting

Karsten Knobloch, PhD, Sandra Tomaszek, MD1, Axel Haverich, PhD1, Peter M Vogt, PhD

Plastic, Hand and Reconstructive Surgery
1 Thoracic and Cardiovascular Surgery, Hannover Medical School, Hannover, Germany

For reprint information contact: Karsten Knobloch, PhD Tel: 49 511 532 8849 Fax: 49 511 532 8890 email: kknobi{at}yahoo.com, Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.

The effect of age as a risk factor for deterioration of palmar microcirculation after radial artery harvesting for coronary revascularization is unknown. In 114 patients aged 61.7 ± 6.7 years undergoing radial artery harvesting, superficial and deep tissue oxygen saturation, postcapillary venous filling, and capillary blood flow were determined using a combined laser Doppler spectrophotometry system 25 ± 5 months after surgery. Superficial and deep oxygen saturation at the harvested thenar eminence decreased with age. In the nondonor hand, oxygen saturation declined in the first and second digits. Postcapillary venous filling pressure in both thenars increased with age. It was concluded that neurological complications do not correlate with age. Palmar tissue oxygen saturation, palmar capillary blood flow, and blood velocity decrease, while postcapillary venous filling pressure significantly increases with age. Radial artery harvesting for coronary revascularization does not compromise palmar microcirculation to the same extent as age. A cut-off value of ≤ 67 years was determined by microcirculatory assessment; beyond this, significant deterioration of palmar microcirculation is more likely to occur.






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