Duy T Dao1, Lystra P Hayden2, Terry L Buchmiller3, Virginia S Kharasch4, Ali Kamran3, Charles J Smithers5, Samuel E Rice-Townsend3, Jill M Zalieckas3, Ronald Becker6, Donna Morash3, Mollie Studley3, Jay M Wilson7, Catherine A Sheils8. 1. Department of Surgery, Boston Children's Hospital, Boston, MA; Vascular Biology Program, Boston Children's Hospital, Boston, MA. 2. Division of Pulmonary Medicine, Boston Children's Hospital, Boston, MA; Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, MA. 3. Department of Surgery, Boston Children's Hospital, Boston, MA. 4. Department of Pediatrics, Franciscan Children's Hospital, Brighton, MA. 5. Department of Surgery, Johns Hopkins All Children's Hospital, St. Petersburg, FL. 6. Division of Developmental Medicine, Boston Children's Hospital, Boston, MA. 7. Department of Pediatric Surgery, McGovern Medical School at UTHealth and Children's Memorial Hermann Hospital, Houston, TX. 8. Division of Pulmonary Medicine, Boston Children's Hospital, Boston, MA. Electronic address: Catherine.Sheils@childrens.harvard.edu.
Abstract
OBJECTIVE: To analyze longitudinal trends of pulmonary function testing in patients with congenital diaphragmatic hernia (CDH) followed in our multidisciplinary clinic. STUDY DESIGN: This was a retrospective cohort study of CDH patients born between 1991 and 2013. A linear mixed effects model was fitted to estimate the trends of percent predicted forced expiratory volume in 1 second (FEV1pp), percent predicted forced vital capacity (FVCpp), and FEV1/FVC over time. RESULTS: Of 268 patients with CDH who survived to discharge, 119 had at least 1 pulmonary function test study. The FEV1pp (P < .001), FVCpp (P = .017), and FEV1/FVC (P = .001) decreased with age. Compared with defect size A/B, those with defect size C/D had lower FEV1pp by an average of 11.5% (95% CI, 2.9%-20.1%; P = .010). A history of oxygen use at initial hospital discharge also correlated with decreased FEV1pp by an average of 8.0% (95% CI, 1.2%-15.0%; P = .023). CONCLUSIONS: In a select cohort of CDH survivors, average pulmonary function declines with age relative to expected population normative values. Those with severe CDH represent a population at risk for worsening pulmonary function test measurements who may benefit from recognition and monitoring for complications.
OBJECTIVE: To analyze longitudinal trends of pulmonary function testing in patients with congenital diaphragmatic hernia (CDH) followed in our multidisciplinary clinic. STUDY DESIGN: This was a retrospective cohort study of CDHpatients born between 1991 and 2013. A linear mixed effects model was fitted to estimate the trends of percent predicted forced expiratory volume in 1 second (FEV1pp), percent predicted forced vital capacity (FVCpp), and FEV1/FVC over time. RESULTS: Of 268 patients with CDH who survived to discharge, 119 had at least 1 pulmonary function test study. The FEV1pp (P < .001), FVCpp (P = .017), and FEV1/FVC (P = .001) decreased with age. Compared with defect size A/B, those with defect size C/D had lower FEV1pp by an average of 11.5% (95% CI, 2.9%-20.1%; P = .010). A history of oxygen use at initial hospital discharge also correlated with decreased FEV1pp by an average of 8.0% (95% CI, 1.2%-15.0%; P = .023). CONCLUSIONS: In a select cohort of CDH survivors, average pulmonary function declines with age relative to expected population normative values. Those with severe CDH represent a population at risk for worsening pulmonary function test measurements who may benefit from recognition and monitoring for complications.
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