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The use of high frequency oscillatory ventilation in a pediatric oncology intensive care unit
Nesreen A Faqih1, Su'ad H Qabba'h, Rawad S Rihani
1Departments of Pediatric Oncology, King Hussein Cancer Centre, Queen Rania Street, Al-Jubeiha, Amman, Jordan. nfaqih@khcc.jo
Insights
High frequency oscillatory ventilation (HFOV) improved gas exchange in pediatric cancer and post-HSCT patients with ARDS. This therapy offers a useful option for managing these critically ill children, with a majority of survivors successfully discharged.
Area of Science:
- Pediatric Critical Care Medicine
- Oncology
- Respiratory Medicine
Background:
- Acute Respiratory Distress Syndrome (ARDS) poses significant challenges in pediatric oncology and post-hematopoietic stem cell transplantation (HSCT) patients.
- High Frequency Oscillatory Ventilation (HFOV) is an established treatment for ARDS in children.
- The effectiveness of HFOV in this specific high-risk pediatric population required further investigation.
Purpose of the Study:
- To evaluate the efficacy of HFOV in pediatric patients with cancer or post-HSCT who develop ARDS.
- To assess the impact of HFOV on gas exchange parameters and clinical outcomes in this cohort.
Main Methods:
- Retrospective case review of pediatric patients diagnosed with ARDS and treated with HFOV.
- Inclusion criteria: pediatric cancer and/or allogeneic HSCT recipients.
- Data collected: demographics, oncological diagnosis, PRISM III scores, ventilator settings, gas exchange (A-a gradient, OI, PaCO2), complications, and outcomes.
Main Results:
- HFOV significantly decreased the alveolar-arterial oxygen (A-a) gradient within 24 hours (P=0.001).
- Oxygen Index (OI) generally decreased, with higher values noted in non-survivors.
- 58% of patients (7 out of 12) were successfully weaned from HFOV and discharged.
Conclusions:
- HFOV demonstrates effectiveness in improving gas exchange for pediatric patients with cancer and post-HSCT who develop ARDS.
- HFOV serves as a valuable therapeutic option for managing critically ill children in this vulnerable population.
- Successful weaning and discharge were achieved in a majority of the studied patients.
Background:
High frequency oscillatory ventilation (HFOV) has been successfully used in the management of acute respiratory distress syndrome (ARDS) in children. The aim of our study is to determine its effectiveness in pediatric patients with cancer or post hematopoietic stem cell transplantation (HSCT) diagnosed with ARDS.
Procedure:
A retrospective case review, in a pediatric intensive care unit (PICU) in a tertiary-care oncology center in Amman, Jordan. Patients included were children with cancer and/or receiving allogeneic HSCT who were diagnosed with ARDS and placed on HFOV from January 2007 to February 2009.
Results:
Data from 12 pediatric oncology patients on HFOV were analyzed for demographics, oncological diagnosis, PRISM III scores, ventilator settings before switching to HFOV and 24 hours after switching, complications, and outcomes. Alveolar-arterial oxygen (A-a) gradient and oxygen index (OI) were calculated, and pressure of arterial CO(2) (PaCO(2) ) was measured before and 24 hours after switching. Endpoints were successful extubation and discharge, or death while intubated. After 24 hours on HFOV, the A-a gradient decreased significantly in all patients (from a median of 564-267 torr; P=0.001). OI decreased in all but two patients who died (median 17); PaCO(2) decrease was not significant. Five patients died (two of them post-HSCT) and the 7 (58%) survivors were weaned from HFOV (median, 9 days) and discharged.
Conclusions:
HFOV improves gas exchange and is useful in managing critically ill children with cancer and post-HSCT patients who develop ARDS.
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