严重延迟复苏烧伤休克患者血浆脑钠肽的变化

目的 观察严重延迟复苏烧伤休克患者早期血浆脑钠肽(BNP)水平的变化,探讨其对延迟休克复苏的临床意义.方法 选择36例烧伤总体表面积32%～92%、深Ⅱ度至Ⅲ度的严重延迟复苏烧伤患者.采用电化学发光(ECL)法动态检测10例严重烧伤休克延迟复苏时并发心力衰竭者(休克伴心衰组)和26例延迟复苏休克期渡过较平稳者(休克复苏后平稳组)入院即刻、入院3 h及伤后24、48、72、168 h血浆BNP、血清乳酸脱氢酶(LDH)和肌酸激酶同工酶(CK-MB)水平,同时检查左室射血分数(LVEF)的变化.结果 心衰组人院3 h及伤后24、48、72 h血浆BNP浓度(ng/L)较平稳组明显升高(入院3 h;1 521.38±121.11比391.36±63.27,伤后24 h:2 516.86±193.25比360.79±146.56,伤后48 h:1 587.76±169.23比398.92±77.46,伤后72 h:974.45±166.33比283.43±68.15,均P＜0.01),LVEF明显降低(入院3 h:0.33±0.03比0.58±0.09,伤后24 h:0.36±0.09比0.60±0.10,伤后48 h:0.35±0.08比0.62±0.11,伤后72 h:0.39±0.10比0.64±0.10,均P＜0.05);两组LDH(μmol·s-1·L-1:平稳组人院即刻2.87±0.50、入院3 h 3.02±0.43、伤后24 h 4.02±0.87,伤后48 h 6.90±0.87、伤后72 h 3.64±0.75、伤后168 h 2.67±0.45,心衰组分别为2.97±1.40、3.84±0.37、4.29±0.45、8.50±0.38、3.84±0.62、2.30±0.38)及CK-MB(U/L:平稳组入院即刻59.12±13.75、入院3 h 70.39±10.72、伤后24 h 79.29±17.27、伤后48 h 67.44±12.77、伤后72 h30.28±7.13、伤后168 h 21.44±3.15,心衰组分别为65.76±16.38、81.46±7.92、86.43±14.19、72.53±11.27、36.39±6.18、22.85±7.26)的变化比较差异无统计学意义(均P＞0.05).结论 血浆BNP浓度测定可作为严重烧伤休克复苏时检测心衰的一项简便易行的有效方法.

Change in plasma brain natriuretic peptide and its clinical significance in burn patients after delayed fluid resuscitation of shock

Objective To observe the early change in plasma brain natriuretic peptide (BNP) level in burn patients with long delayed fluid resuscitation of burn shock and its clinical significance.Methods Thirty-six burn patients with second and third degree of burn covering 32%- 92% total body surface area were enrolled for the study, among them 10 patients were complicated with serious heart failure (heart failure group), and 26 patients rallied from shock after delayed fluid resuscitation without heart failure (stable group).The level of plasma BNP, lactate dehydrogenase (LDH), MB isoenzyme of creatine kinase (CK-MB), and left ventricle ejection fraction (LVEF) were determined at admission and 3 hours after hospitalization, and 24, 48, 72, 168 hours after the injury in both groups with electrochemiluminescence (ECL).Results Compared with stable group, the plasma BNP level (ng/L) of heart failure group at 3 hours after hospitalization, and 24, 48, 72 hours after the burn injury increased significantly (3 hours after hospitalization: 1 521.38±121.11 vs.391.36±63.27, 24 hours after burn: 2 516.86±193.25 vs.360.79±146.56, 48 hours after burn: 1 587.76±169.23 vs.398.92±77.46, 72 hours after burn: 974.45±166.33vs.283.43 ± 68.15, all P＜ 0.01), the level of LVEF lowered significantly (3 hours after hospitalization;0.33±0.03 vs.0.58±0.09, 24 hours after burn: 0.36±0.09 vs.0.60±0.10, 48 hours after burn: 0.35±0.08 vs.0.62±0.11, 72 hours after burn: 0.39±0.10 vs.0.64±0.10, all P＜0.05).The levels of LDH (μmol·s-1·L-1)in stable group were 2.87±0.50 at admission,3.02±0.43 3hours after hospitalization,4.02±0.87 24 hours after burn, 6.90±0.87 48 hours after burn, 3.64±0.75 72 hours after burn, 2.670.45 168 hours after burn while in heart failure group, they were 2.97±1.40, 3.84±0.37, 4.29±0.45,8.50±0.38, 3.84±0.62, 2.30±0.38, respectively;and CK-MB (U/L) in stable group were 59.12±13.75at admission, 70.39 ±10.72 3 hours after hospitalization, 79.29 ±17.27 24 hours after burn, 67.44 ±12.7748 hours after burn, 30.28± 7.13 72 hours after burn, 21.44 ±3.15 168 hours after burn while in heart failure group, they were 65.76 ± 16.38, 81.46 ± 7.92, 86.43 ± 14.19, 72.53 ± 11.27, 36.39 ± 6.18,22.85±7.26, respectively.No statistically significant difference was found in changes in both LDH and CK-MB between two groups (all P＞0.05).Conclusion Determination of the plasma BNP is a simple and useful method in detecting heart failure during resuscitation of shock after a serious burn injury.