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Published on: March 8, 2019
Fundamentals of management of acute postoperative pulmonary hypertension
Mary B Taylor1, Peter C Laussen
1Division of Pediatric Critical Care, Department of Pediatrics, Monroe Carell, Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA. mary.b.taylor@vanderbilt.edu
Insights
Pediatric pulmonary hypertension after cardiac surgery requires specific management. Early identification and targeted strategies can prevent severe complications in high-risk children.
Area of Science:
- Pediatric Cardiology
- Critical Care Medicine
- Pulmonary Medicine
Background:
- Pulmonary hypertension (PH) management in children post-cardiac surgery has seen limited advancements.
- Risk stratification for postoperative PH is crucial, based on preoperative cardiac disease.
- PH mechanisms in these patients are categorized into four groups: increased pulmonary vascular resistance, increased pulmonary blood flow, combined increases, and elevated pulmonary venous pressure.
Purpose of the Study:
- To review immediate postoperative management strategies for pediatric pulmonary hypertension.
- To highlight the importance of early recognition and intervention in high-risk patients.
Main Methods:
- Review of current medical therapies for pediatric PH.
- Discussion of monitoring techniques and ventilatory strategies.
- Analysis of weaning protocols from respiratory support.
Main Results:
- Identification of patient subgroups at risk for severe postoperative PH.
- Strategies focus on preventing hemodynamic instability.
- Minimizing PH aims to avoid ventricular dysfunction and low output states.
Conclusions:
- Early recognition of at-risk pediatric patients is key for effective PH management post-cardiac surgery.
- Tailored management strategies can mitigate severe hemodynamic compromise.
- Proactive intervention improves outcomes by preventing critical complications like ventricular dysfunction.
Abstract:
In the last several years, there have been numerous advancements in the field of pulmonary hypertension as a whole, but there have been few changes in the management of children with pulmonary hypertension after cardiac surgery. Patients at particular risk for postoperative pulmonary hypertension can be identified preoperatively based on their cardiac disease and can be grouped into four broad categories based on the mechanisms responsible for pulmonary hypertension: 1) increased pulmonary vascular resistance; 2) increased pulmonary blood flow with normal pulmonary vascular resistance; 3) a combination of increased pulmonary vascular resistance and increased blood flow; and 4) increased pulmonary venous pressure. In this review of the immediate postoperative management of pulmonary hypertension, various strategies are discussed including medical therapies, monitoring, ventilatory strategies, and weaning from these supports. With early recognition of patients at particular risk for severe pulmonary hypertension, management strategies can be directed at preventing or minimizing hemodynamic instability and thereby prevent the development of ventricular dysfunction and a low output state.
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