Cardiac cryolesions: factors affecting their size and a means of monitoring their formation.
Cardiac cryolesions: factors affecting their size and a means of monitoring their formation.
复制标题
心脏冷冻损伤:影响其大小的因素以及监测其形成的方法。
DOI:
10.1016/s0003-4975(10)64691-7
复制
发表时间:
1988
期刊:
影响因子:
--
通讯作者:
Hargrove3rd,WC
中科院分区:
文献类型:
--
作者:
Markovitz,LJ;Frame,LH;Josephson,ME;Hargrove3rd,WC
Twenty-seven endocardial cryolesions were created in mongrel dogs and analyzed to determine the effects on cryolesion size of both the initial myocardial temperature (37°C versus 12°C) and the pressure within the nitrous oxide delivery line (tank pressure of more than 700 pounds per square inch [psi] versus tank pressure of less than 700 psi). In addition, local myocardial temperatures were monitored to determine their utility in the intraoperative determination of the extent of cryothermic cell death.Cryolesion volume was significantly affected by both the initial myocardial temperature (p> 0.001) and the line pressure (p= 0.014). In a 37°C myocardium, the mean lesion volume ranged from 0.501 ± 0.183 cc at line pressures lower than 700 psi to 0.839 ± 0.258 cc at line pressures greater than 700 psi. In a 12°C myocardium, the mean volume was 1.151 ± 0.436 cc at line pressures lower than 700 psi and 1.361 ± 0.288 cc at line pressures higher than 700 psi.A myocardial temperature of 0°C occurs at the edge of the area of cell death. When analyzing the range from −5° to +5°C, the probability of a point at or lower than 0°C falling inside the cryolesion is 84.2%. Monitoring intra-myocardial temperature will predict the border of a cryolesion.
登录
查看更多内容
影响因子:
37.8
作者:
GALLAGHER, JJ;ANDERSON, RW;WALLACE, AG
通讯作者:
WALLACE, AG
DOI:
10.1016/s0003-4975(10)61589-5
发表时间:
1983
期刊:
The Annals of thoracic surgery
影响因子:
--
作者:
Holman,WL;Ikeshita,M;DouglasJr,JM;Smith,PK;Lofland,GK;Cox,JL
通讯作者:
Cox,JL
DOI:
--
发表时间:
1985-12
期刊:
The American journal of pathology
影响因子:
--
作者:
M. T. Vivaldi;R. Kloner;F. Schoen
通讯作者:
M. T. Vivaldi;R. Kloner;F. Schoen
影响因子:
37.8
作者:
KLEIN, GJ;HARRISON, L;GALLAGHER, JJ
通讯作者:
GALLAGHER, JJ
影响因子:
37.8
作者:
J. Gallagher;W. Sealy;Robert W. Anderson
通讯作者:
Robert W. Anderson