Abstract:
:This study was designed to evaluate the effects of crush injuries to the feeding arteries of a muscle flap on microcirculatory haemodynamics. Eighteen male Sprague-Dawley rats were divided into three experimental groups for intravital microscopy of the cremaster muscle flap. Group 1 served as control. In group 2 the common iliac artery and in group 3 additionally the lower abdominal aorta was crushed with a Kocher clamp (17.4 N) over 5 min. Microcirculatory parameters (red blood cell velocity, vessel diameter, and capillary perfusion) were monitored before and 2 h after crush. In the one-level crush group, red blood cell velocities significantly decreased by 39.17% (P=0.046) in first order arterioles and by 32. 91% (P=0.0106) in second order arterioles. In capillary perfusion, a drop of 48.02% (P=0.0039) was noted. In the two-level crush group, red blood cell velocities significantly dropped over 32.06% (P=0. 0250) in first order arterioles, 35.91% (P=0.0065) in second order arterioles, and 45.69% (P=0.0782) in first order venules. Capillary perfusion was reduced by 20.16% (P=0.374). Arterial crush injuries as possible thrombogenic insults may result in a significant decrease in skeletal muscle perfusion although the blood supply through the crushed supplying vessel is maintained.
journal_name
Microsurgeryjournal_title
Microsurgeryauthors
Krapohl BD,Mailänder P,Siemionow M,Giunta R,Zins JEdoi
10.1002/(sici)1098-2752(1999)19:8<364::aid-micr3>3subject
Has Abstractpub_date
1999-01-01 00:00:00pages
364-8issue
8eissn
0738-1085issn
1098-2752pii
10.1002/(SICI)1098-2752(1999)19:8<364::AID-MICR3>3journal_volume
19pub_type
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