Spectrum of Off-Label Nitric Oxide Utilization After Pediatric Cardiac Surgery Among Centers of Varying Surgical Volume

2017 ◽  
Vol 34 (11-12) ◽  
pp. 917-923 ◽  
Author(s):  
Punkaj Gupta ◽  
Mallikarjuna Rettiganti ◽  
Andrew Wilcox ◽  
Brian K. Eble ◽  
Michael L. Schmitz ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Cardiac Surgery ◽  
Regression Models ◽  
Heart Surgery ◽  
Health Information System ◽  
High Volume ◽  
Pediatric Cardiac Surgery ◽  
Surgical Volume ◽  
Logistic Regression Models ◽  
Off Label

Objective:Nitric oxide is utilized after pediatric cardiac surgery as an off-label medication without much evidence, is expensive, and varies among centers of varying surgical volume. The objective of our study was to describe the spectrum of nitric oxide utilization and to evaluate the effect of nitric oxide utilization on outcomes among patients cared for in centers of varying surgical volume using Pediatric Health Information system.Methods:Patients aged ≤18 years undergoing heart surgery were included (2004-2015). Multivariable mixed-effects logistic regression models were fitted to evaluate association of center volume with odds of nitric oxide utilization among patients undergoing heart operations. Centers were classified into 3 volume categories based on tertiles of number of cardiopulmonary bypass cases performed (low volume: 34 792 patients, 21 centers; medium volume: 38 362 patients, 13 centers; high volume: 30 560 patients, 7 centers).Results:A total of 103 714 patients from 41 hospitals were included. Of these, 15 708 (15.1%) patients received nitric oxide after cardiac surgery. Of the patients receiving nitric oxide, only 3936 (25.1%) patients were associated with a diagnosis of pulmonary hypertension. In adjusted models, low- and medium-volume centers were associated with higher nitric oxide utilization after heart operations as compared to high-volume centers (low vs high, odds ratio [OR]: 1.48, 95% confidence interval [CI]: 1.38-1.60; medium vs high, OR: 1.33, 95% CI: 1.26-1.41). Despite higher nitric oxide utilization, the mortality was worse among patients treated in low- and medium-volume centers, as compared to high-volume centers (low vs high, OR: 1.42, 95% CI: 1.26-1.60; medium vs high, OR: 1.14, 95% CI: 1.04-1.25).Conclusions:This study demonstrates variation in nitric oxide utilization after heart operations among centers of varying surgical volume. Further, it raises questions on the benefit of nitric oxide administration after pediatric cardiac surgery.

Ultrafiltration in Pediatric Cardiac Surgery Review

2019 ◽  
Vol 10 (6) ◽  
pp. 778-788 ◽  
Author(s):  
Joel Bierer ◽  
Roger Stanzel ◽  
Mark Henderson ◽  
Suvro Sett ◽  
David Horne
Keyword(s):  
Cardiac Surgery ◽  
Clinical Outcomes ◽  
Heart Surgery ◽  
Fluid Overload ◽  
Meta Analysis ◽  
Open Heart Surgery ◽  
Pediatric Cardiac Surgery ◽  
Significant Heterogeneity ◽  
Study Protocols ◽  
The Impact

Introduction: The use of cardiopulmonary bypass in pediatric cardiac surgery is associated with significant inflammation, fluid overload, and end-organ dysfunction yielding morbidity and mortality. For decades, various intraoperative ultrafiltration techniques such as conventional ultrafiltration, modified ultrafiltration (MUF), zero-balance ultrafiltration (ZBUF), and combination techniques (ZBUF-MUF) have been used to mitigate these toxicities and promote improved postoperative outcomes. However, there is currently no consensus on the ultrafiltration technique or strategy that yields the most benefit for infants and children undergoing open heart surgery. Methods: A librarian-conducted PubMed literature search from 1990 to 2018 yielded 90 clinical studies or publications on the various forms of ultrafiltration and the impact on physiologic markers and clinical outcomes. All publications were reviewed, summarized, and conclusions synthesized. The data sets were not combined for systematic or meta-analysis due to significant heterogeneity in study protocols and patient populations. Results: Modified ultrafiltration significantly promotes improved myocardial function, reduction in fluid overload, and reduced bleeding and transfusion complications. Furthermore, ZBUF has shown a consistent reduction in inflammatory cytokines and improved pulmonary function and compliance. There is conflicting evidence that MUF, ZBUF, and ZBUF-MUF culminate in reduced ventilation time and intensive care unit stay. Conclusion: Various modes of ultrafiltration have been shown to be associated with improved physiologic function or clinical outcomes in pediatric cardiac surgery. There are some inconsistent trial results that can be explained by heterogeneity in ultrafiltration, clinical staff preferences, and institution protocols. Ultrafiltration has some essential benefit as it is ubiquitously used at pediatric heart centers; however, the optimal protocol could be yet identified.

Review of Inhaled Nitric Oxide in the Pediatric Cardiac Surgery Setting

2012 ◽  
Vol 33 (4) ◽  
pp. 493-505 ◽  
Author(s):  
Paul A. Checchia ◽  
Ronald A. Bronicki ◽  
Brahm Goldstein
Keyword(s):  
Nitric Oxide ◽  
Cardiac Surgery ◽  
Inhaled Nitric Oxide ◽  
Pediatric Cardiac Surgery

scholarly journals Cardiac Surgical Outcome Prediction by Blood Pressure Variability Indices Poincaré plot and Coefficient of Variation: an Observational Study

2019 ◽  
Author(s):  
Senthil Packiasabapathy K ◽  
Varesh Prasad ◽  
Valluvan Rangasamy ◽  
David Popok ◽  
Xinling Xu ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renal Failure ◽  
Logistic Regression ◽  
Cardiac Surgery ◽  
Coefficient Of Variation ◽  
Blood Pressure Variability ◽  
Regression Models ◽  
Outcome Prediction ◽  
Prediction Ability ◽  
Logistic Regression Models

Abstract Background Recent literature suggests a significant association between blood pressure variability (BPV) and postoperative outcomes after cardiac surgery. However, its outcome prediction ability remains unclear. Current prediction models use static preoperative patient factors. We aimed to test the performance of Poincaré plots and coefficient of variation (CV) independently by measuring intraoperative BP variability.Methods In this retrospective, observational, cohort study, 3687 adult patients undergoing cardiac surgery from 2008 to 2013 were included. Poincaré plots from BP data and descriptors SD1, SD2 by ellipse fitting technique were computed. The outcomes analyzed were the 30-day mortality and postoperative renal failure. Logistic regression models adjusted for preoperative and surgical factors were constructed to evaluate the association between BPV parameters and outcomes. C-statistics were used to analyse the predictive ability.Results Analysis found that, 99 (2.7%) patients died within 30 days and 105 (2.8%) patients suffered from in-hospital renal failure. Logistic regression models including BPV parameters (SD1, SD2 and CV) performed poorly in predicting postoperative 30-day mortality and renal failure. They did not add any significant value to the conventional prediction model.Conclusions We demonstrate the feasibility of applying Poincaré plots for BP variability analysis. Patient comorbid conditions and other preoperative factors are still the gold standard for outcome prediction. Future directions include analysis of dynamic parameters such as complexity of physiological signals in identifying high risk patients and tailoring management accordingly.

scholarly journals Cardiac Surgical Outcome Prediction by Blood Pressure Variability Indices Poincaré plot and Coefficient of Variation: an Observational Study

2020 ◽  
Author(s):  
Senthil Packiasabapathy K ◽  
Varesh Prasad ◽  
Valluvan Rangasamy ◽  
David Popok ◽  
Xinling Xu ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renal Failure ◽  
Logistic Regression ◽  
Cardiac Surgery ◽  
Coefficient Of Variation ◽  
Blood Pressure Variability ◽  
Regression Models ◽  
Outcome Prediction ◽  
Logistic Regression Models ◽  
C Statistic

Abstract Background Recent literature suggests a significant association between blood pressure variability (BPV) and postoperative outcomes after cardiac surgery. However, its outcome prediction ability remains unclear. Current prediction models use static preoperative patient factors. We explored the ability of Poincaré plots and coefficient of variation (CV) by measuring intraoperative BPV in predicting adverse outcomes. Methods In this retrospective, observational, cohort study, 3687 adult patients (> 18 years) undergoing cardiac surgery requiring cardio-pulmonary bypass from 2008 to 2014 were included. Blood pressure variability was computed by Poincare plots and CV. Standard descriptors (SD) SD1, SD2 were measured with Poincare plots by ellipse fitting technique. The outcomes analyzed were the 30-day mortality and postoperative renal failure. Logistic regression models adjusted for preoperative and surgical factors were constructed to evaluate the association between BPV parameters and outcomes. C-statistics were used to analyse the predictive ability. Results Analysis found that, 99 (2.7%) patients died within 30 days and 105 (2.8%) patients suffered from in-hospital renal failure. Logistic regression models including BPV parameters (standard descriptors from Poincare plots and CV) performed poorly in predicting postoperative 30-day mortality and renal failure [Concordance(C)-Statistic around 0.5]. They did not add any significant value to the standard STS risk score [C-statistic: STS alone 0.7, STS + BPV parmeters 0.7]. Conclusions In conclusion, BP variability computed from Poincare plots and CV were not predictive of mortality and renal failure in cardiac surgical patients. Patient comorbid conditions and other preoperative factors are still the gold standard for outcome prediction. Future directions include analysis of dynamic parameters such as complexity of physiological signals in identifying high risk patients and tailoring management accordingly.

scholarly journals Corticosteroids and Other Anti-Inflammatory Strategies in Pediatric Heart Surgery: A National Survey of Practice

2018 ◽  
Vol 9 (3) ◽  
pp. 289-293 ◽  
Author(s):  
Daniel P. Fudulu ◽  
Alvin Schadenberg ◽  
Ben Gibbison ◽  
Ian Jenkins ◽  
Stafford Lightman ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Heart Surgery ◽  
Pediatric Cardiac Surgery ◽  
Pediatric Heart Surgery ◽  
The United Kingdom ◽  
Wide Variability ◽  
Patient Groups ◽  
Anti Inflammatory ◽  
Almost All

Background: The role of steroids to mitigate the deleterious effects of pediatric cardiopulmonary bypass (CPB) remains a matter of debate; therefore, we aimed to assess preferences in administering corticosteroids (CSs) and the use of other anti-inflammatory strategies in pediatric cardiac surgery. Methods: A 19-question survey was distributed to consultants in pediatric cardiac anesthesia from 12 centers across the United Kingdom and Ireland. Results: Of the 37 respondents (37/60, 62%), 24 (65%) use CSs, while 13 (35%) do not use steroids at all. We found variability within 5 (41%) of the 12 centers. Seven consultants (7/24, 29%) administer CSs in every case, while 17 administer CSs in selected cases only (17/24, 71%). There was variability in the dose of steroid administration. Almost all consultants (23/24, 96%) administer a single dose at induction, and one administers a two-dose regimen (1/24, 4%). There was variability in CS indications. Most consultants (24/37, 66%) use modified ultrafiltration at the conclusion of CPB. Fifteen consultants (15/32, 47%) report the use of aprotinin, while only 3 use heparin-coated circuits (3/24, 9%). Conclusions: We found wide variability in practice in the administration of CSs for pediatric cardiac surgery, both within and between units. While most anesthetists administer CSs in at least some cases, there is no consensus on the type of steroid, the dose, and at which patient groups this should be directed. Modified ultrafiltration is still used by most of the centers. Almost half of consultants use aprotinin, while heparin-coated circuits are infrequently used.

Postoperative Inhaled Nitric Oxide Does Not Decrease Length of Stay in Pediatric Cardiac Surgery Admissions

2019 ◽  
Vol 40 (8) ◽  
pp. 1559-1568
Author(s):  
Joshua Wong ◽  
Rohit S. Loomba ◽  
Lee Evey ◽  
Ronald A. Bronicki ◽  
Saul Flores
Keyword(s):  
Nitric Oxide ◽  
Cardiac Surgery ◽  
Length Of Stay ◽  
Inhaled Nitric Oxide ◽  
Pediatric Cardiac Surgery

scholarly journals Is Greater Than 0.5 MAC Inhalational Agent Use Post-Bypass Related to Need for Inotropic and/or Vasoconstrictor Support?

Hearts ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 213-223
Author(s):  
Tara A. Lenk ◽  
Carlos E. Guerra-Londono ◽  
Thomas E. Graul ◽  
Marc A. Murinson ◽  
Prabhdeep K. Hehar ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Cardiac Surgery ◽  
Propensity Score ◽  
Regression Models ◽  
Independent Predictor ◽  
Care Hospital ◽  
Elective Cardiac Surgery ◽  
Logistic Regression Models ◽  
Adjusted Analysis ◽  
Inhalational Agent

Background and Aims: We hypothesized that maintaining a patient on moderate–high doses of potent inhalational agent for greater than 30 min during the post-bypass period would be an independent predictor of initiation and usage of either inotropic and/or vasopressor infusions. Setting and Design: This study is a retrospective design and approved by the institutional review board. The setting was a single-center, academic tertiary care hospital in Detroit, Michigan. Materials and Methods: Three-hundred, ninety-seven elective cardiac surgery patients were identified for chart review. Electronic medical records were reviewed to collect demographics and perioperative data. Statistics used include a propensity score regression adjusted analysis utilizing logistic regression models and a multivariable model. Results: A propensity score regression adjusted analysis was performed and then applied in both univariate and multivariate logistic regression models with a p value of <0.05 reaching statistical significance. Fifty-six percent of the participants had an exposure of greater than 30 min of a minimum alveolar concentration of isoflurane greater than 0.5 (ETISO ≥ 0.5MAC, 30 min) in the post-bypass period. After adjusting for propensity score, this was found to be a significant predictor of inotrope and/or vasoconstrictor use post-bypass (OR 2.49, 95% CI 1.15–5.38, p = 0.021). In the multivariate model, pulmonary hypertension (OR 5.9; 95% CI 1.33–26.28; p = 0.02), Euroscore II (2.73; 95% CI 1.35–5.5; p = 0.005), and cardiopulmonary bypass hours (OR 1.86; 95% CI 1.02–3.4; p = 0.042) emerged as significant. Conclusions: This study showed that an ETISO ≥ 0.5MAC, 30 min exposure during the immediate post-bypass period during elective cardiac surgery was an independent predictor of a patient being started on inotrope or vasoconstrictor infusions. Further research should consider a prospective design and examine depth of anesthesia during the post-bypass period.

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