Volume 55, Issue 3 pp. 697-705
ORIGINAL ARTICLE

Resting respiratory lung volumes are “healthier” than exercise respiratory volumes in different types of palliated or corrected congenital heart disease

Marianna Fabi MD, PhD

Corresponding Author

Marianna Fabi MD, PhD

Department of Cardiac, Thoracic and Vascular Sciences, Paediatric Cardiology and Adult Congenital Unit, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

Correspondence Marianna Fabi, Department of Cardiac, Thoracic and Vascular Sciences, Paediatric Cardiology and Adult Congenital Unit, University of Bologna, S. Orsola-Malpighi Hospital, Via Massarenti 9, 40138 Bologna, Italy.

Email: [email protected]

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Anna Balducci MD, PhD

Anna Balducci MD, PhD

Department of Cardiac, Thoracic and Vascular Sciences, Paediatric Cardiology and Adult Congenital Unit, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

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Salvatore Cazzato MD, PhD

Salvatore Cazzato MD, PhD

Department of Mother and Child Health, Azienda Ospedaliero Universitaria Ospedali Riuniti di Ancona Umberto I G M Lancisi G Salesi, Ancona, Marche, Italy

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Arianna Aceti MD, PhD

Arianna Aceti MD, PhD

Department of Pediatrics, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

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Marcella Gallucci MD

Marcella Gallucci MD

Department of Pediatrics, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

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Emanuela Di Palmo MD

Emanuela Di Palmo MD

Department of Pediatrics, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

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Gaetano Gargiulo MD

Gaetano Gargiulo MD

Department of Pediatric and Adult Congenital Heart Cardiac Surgery, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

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Andrea Donti MD

Andrea Donti MD

Department of Cardiac, Thoracic and Vascular Sciences, Paediatric Cardiology and Adult Congenital Unit, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

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Marcello Lanari MD, PhD

Marcello Lanari MD, PhD

Department of Pediatrics, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy

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First published: 17 January 2020
Citations: 4

Abstract

Aims

Cardiac surgery has improved life expectancy of patients with congenital heart diseases (CHDs). Exercise capacity is an important determinant of survival in patients with CHDs. There is a lack of studies focusing on the role of resting respiratory performance in reducing exercise tolerance in these patients.

Objectives

To determine the prevalence and severity of respiratory functional impairment in different types of corrected/palliated CHDs, and its impact on an exercise test.

Materials and Methods

Retrospective single-center study involving 168 corrected/palliated patients with CHD and 52 controls. Patients CHD were divided into subgroups according to the presence of native pulmonary blood flow or total cavopulmonary connection (TCPC). All subjects performed complete pulmonary function tests and gas diffusion; patients with CHD also performed cardiopulmonary exercise test (CPX).

Results

Mean values of lung volumes were within the normal range in all CHD groups. Comparing to controls, patients with the reduced pulmonary flow and with TCPC had the highest reduction in lung volumes. CPX was reduced in all groups, most severely in TCPC, and it was correlated to decreased dynamic volumes in all CHD groups except in TCPC. Younger age at intervention and number of surgical operations negatively affected lung volumes.

Conclusions

Respiratory function is within the normal range in our patients with different CHDs at rest but altered in all CHDs during exercise when cardiorespiratory balance is likely to be inadequate. Comparing the different groups, patients with reduced pulmonary flow and TCPC are the most impaired.

CONFLICT OF INTERESTS

The authors declare that there are no conflict of interests.

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