CUTANEOUS AND SUBCUTANEOUS BLOOD-FLOW RATES IN PARAPLEGIC HUMANS INVESTIGATED BY XE-133 WASH-OUT - METHODOLOGICAL CONSIDERATIONS

被引:1
作者
SORENSEN, JL
HAUGE, EN
WROBLEWSKI, H
BIERINGSORENSEN, F
机构
[1] NATL UNIV HOSP,RIGSHOSP,DEPT CARDIOL,RODOVRE,DENMARK
[2] NATL UNIV HOSP,RIGSHOSP,CTR SPINAL CORD INJURED,RODOVRE,DENMARK
来源
CLINICAL PHYSIOLOGY | 1994年 / 14卷 / 03期
关键词
LIDOCAINE; NERVOUS BLOCKADE; NORMAL HUMANS; PARAPLEGIA; RATE CONSTANT; SYMPATHETIC TONE; TILTING;
D O I
10.1111/j.1475-097X.1994.tb00385.x
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
In a methodological study including 14 paraplegics and seven normal controls cutaneous and subcutaneous blood now rates were investigated by (133)Xenon wash-out after atraumatic labelling. In paraplegics, areas suffering pressure sores were included. The method was found applicable for the authors' purposes. In seven paraplegics median (95% confidence limits) cutaneous blood now was 5.2 (2.4-8.5) ml (100 g min)(-1) and subcutaneous 4.3 (2.0-13.2) ml (100 g min)(-1). This did not differ from normal controls. In seven paraplegics with ischial pressure sores a trend for increased cutaneous blood-flow rates from areas adjacent to sores was obvious (P=0.06). During 70 degrees head-up tilt, elimination-rate constants were reduced by a factor of 0.54 (0.50-0.70). A proximal blockade or infiltration of the (133)Xenon depots with lidocaine did not inhibit employment of the method. The proximal block did not alter the local blood flow rate, but infiltration increased it in both paraplegics and normal individuals. Intra- and interdepot coefficients of variation were about 11% and 40% respectively. Interindividual coefficients of variation varied between 25% and 46%.
引用
收藏
页码:281 / 289
页数:9
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