Serum lactate clearance as a predictor of outcome in infants' postcardiac surgery

Background and Aims: Prediction of postoperative outcomes by conventional hemodynamic parameters and risk scoring systems immediately after pediatric cardiac surgery has not been found to be reliable. Trends in serum lactate value over time or serum lactate clearance were found to give better estima...

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Main Authors: Hasmukh Patel, Nirav Parikh, K S Ramkiran, Prakash Sadhwani, Ramesh Patel, Pratik Shah
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2022-01-01
Series:Heart India
Subjects:
Online Access:http://www.heartindia.net/article.asp?issn=2321-449X;year=2022;volume=10;issue=2;spage=63;epage=67;aulast=Patel
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author Hasmukh Patel
Nirav Parikh
K S Ramkiran
Prakash Sadhwani
Ramesh Patel
Pratik Shah
author_facet Hasmukh Patel
Nirav Parikh
K S Ramkiran
Prakash Sadhwani
Ramesh Patel
Pratik Shah
author_sort Hasmukh Patel
collection DOAJ
description Background and Aims: Prediction of postoperative outcomes by conventional hemodynamic parameters and risk scoring systems immediately after pediatric cardiac surgery has not been found to be reliable. Trends in serum lactate value over time or serum lactate clearance were found to give better estimate. The present study aimed to find out the effect of serum lactate clearance on mortality after pediatric cardiac surgery. Methods: Out of the 150 pediatric cardiac surgical procedures performed during the study period, 131 patients meeting inclusion criteria were enrolled in the present study. The study population was observed for lactate levels immediately postoperatively (T0) and then every 4 h for the first 24 h (T1-T6) and lactate clearance was calculated. Patient's outcomes in view of mortality, duration of mechanical ventilation, and length of intensive care unit (ICU) stay were observed. Results: In our study, mortality was 9.23%. Median inter quartile range with Hodges-Lehmann median difference (95% confidence interval) lactate values were higher among nonsurvivors and statistically significant at T0 = (6.14 [3.43,7.34] vs. 2.50 [1.87,3.59]; 2.53 [1.02, 4.33], P ≤ 0.0001), T1 = (3.10 [2.81, 5.16] vs. 2.30 [1.73, 3.61];0.95 [0.13, 1.73], P = 0.032), T2 = (3.49 [3.03, 5.40] vs. 2.39 [1.66, 3.38];1.32 [0.48, 2.27], P = 0.004), T3 = (3.82 [2.99, 5.54] vs. 2.20 [1.58, 3.45]; 1.46 [0.50, 2.45], P = 0.003), T4 = (4.86 [3.35, 5.44] vs. 2.09 [1.42, 3.47]; 2.02 [1.09, 3.13], P ≤ 0.0001), T5 = (4.36 [3.80, 6.27] vs. 2 [1.32, 3.26]; 2.29 [1.41, 3.25], P ≤ 0.0001), and T6 = (4.12 [3.69, 5.83] vs. 1.82 [1.31, 3.15]; 2.34 [1.15, 3.21], P ≤ 0.0001). Nonsurvivors were having decreasing trend of lactate clearance which was statistically nonsignificant. Mechanical ventilation was prolonged in nonsurvivors compared to survivor (135 [202] h vs. 30 [77] h; P = 0.002); however, there was no significant difference in ICU stay (P = 0.764). Conclusion: Poor lactate clearance and high lactate level were associated with high mortality. Serial lactate levels and decreasing trend of lactate clearance in the early postoperative period is a good predictor of postoperative outcome in pediatric cardiac surgery.
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spelling doaj.art-65d7fb51491545fe8e466afbcc49d1402022-12-22T03:11:53ZengWolters Kluwer Medknow PublicationsHeart India2321-449X2022-01-01102636710.4103/heartindia.heartindia_18_22Serum lactate clearance as a predictor of outcome in infants' postcardiac surgeryHasmukh PatelNirav ParikhK S RamkiranPrakash SadhwaniRamesh PatelPratik ShahBackground and Aims: Prediction of postoperative outcomes by conventional hemodynamic parameters and risk scoring systems immediately after pediatric cardiac surgery has not been found to be reliable. Trends in serum lactate value over time or serum lactate clearance were found to give better estimate. The present study aimed to find out the effect of serum lactate clearance on mortality after pediatric cardiac surgery. Methods: Out of the 150 pediatric cardiac surgical procedures performed during the study period, 131 patients meeting inclusion criteria were enrolled in the present study. The study population was observed for lactate levels immediately postoperatively (T0) and then every 4 h for the first 24 h (T1-T6) and lactate clearance was calculated. Patient's outcomes in view of mortality, duration of mechanical ventilation, and length of intensive care unit (ICU) stay were observed. Results: In our study, mortality was 9.23%. Median inter quartile range with Hodges-Lehmann median difference (95% confidence interval) lactate values were higher among nonsurvivors and statistically significant at T0 = (6.14 [3.43,7.34] vs. 2.50 [1.87,3.59]; 2.53 [1.02, 4.33], P ≤ 0.0001), T1 = (3.10 [2.81, 5.16] vs. 2.30 [1.73, 3.61];0.95 [0.13, 1.73], P = 0.032), T2 = (3.49 [3.03, 5.40] vs. 2.39 [1.66, 3.38];1.32 [0.48, 2.27], P = 0.004), T3 = (3.82 [2.99, 5.54] vs. 2.20 [1.58, 3.45]; 1.46 [0.50, 2.45], P = 0.003), T4 = (4.86 [3.35, 5.44] vs. 2.09 [1.42, 3.47]; 2.02 [1.09, 3.13], P ≤ 0.0001), T5 = (4.36 [3.80, 6.27] vs. 2 [1.32, 3.26]; 2.29 [1.41, 3.25], P ≤ 0.0001), and T6 = (4.12 [3.69, 5.83] vs. 1.82 [1.31, 3.15]; 2.34 [1.15, 3.21], P ≤ 0.0001). Nonsurvivors were having decreasing trend of lactate clearance which was statistically nonsignificant. Mechanical ventilation was prolonged in nonsurvivors compared to survivor (135 [202] h vs. 30 [77] h; P = 0.002); however, there was no significant difference in ICU stay (P = 0.764). Conclusion: Poor lactate clearance and high lactate level were associated with high mortality. Serial lactate levels and decreasing trend of lactate clearance in the early postoperative period is a good predictor of postoperative outcome in pediatric cardiac surgery.http://www.heartindia.net/article.asp?issn=2321-449X;year=2022;volume=10;issue=2;spage=63;epage=67;aulast=Patelcardiac surgeryinfantsserum lactate clearance
spellingShingle Hasmukh Patel
Nirav Parikh
K S Ramkiran
Prakash Sadhwani
Ramesh Patel
Pratik Shah
Serum lactate clearance as a predictor of outcome in infants' postcardiac surgery
Heart India
cardiac surgery
infants
serum lactate clearance
title Serum lactate clearance as a predictor of outcome in infants' postcardiac surgery
title_full Serum lactate clearance as a predictor of outcome in infants' postcardiac surgery
title_fullStr Serum lactate clearance as a predictor of outcome in infants' postcardiac surgery
title_full_unstemmed Serum lactate clearance as a predictor of outcome in infants' postcardiac surgery
title_short Serum lactate clearance as a predictor of outcome in infants' postcardiac surgery
title_sort serum lactate clearance as a predictor of outcome in infants postcardiac surgery
topic cardiac surgery
infants
serum lactate clearance
url http://www.heartindia.net/article.asp?issn=2321-449X;year=2022;volume=10;issue=2;spage=63;epage=67;aulast=Patel
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AT ksramkiran serumlactateclearanceasapredictorofoutcomeininfantspostcardiacsurgery
AT prakashsadhwani serumlactateclearanceasapredictorofoutcomeininfantspostcardiacsurgery
AT rameshpatel serumlactateclearanceasapredictorofoutcomeininfantspostcardiacsurgery
AT pratikshah serumlactateclearanceasapredictorofoutcomeininfantspostcardiacsurgery