Variation in pulmonary function tests among children with sickle cell anemia: a systematic review and meta-analysis

Amar Taksande1, Patel Zeeshan Jameel1, Divya Pujari2

  • 1Department of Paediatrics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences, Sawangi Meghe, Wardha, Maharashtra State, India.

Insights

Children with sickle cell anemia (SCA) show reduced lung function, specifically lower forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC). Routine pulmonary function tests (PFTs) are recommended for early detection of lung decline in SCA patients.

Area of Science:

  • Pulmonary Medicine
  • Pediatrics
  • Hematology

Background:

  • Sickle cell anemia (SCA) is associated with various pulmonary complications, including acute chest syndrome (ACS), pulmonary hypertension (PH), and airway hyper-responsiveness (AHR).
  • Pulmonary function abnormalities are common in children with SCA, necessitating further investigation.

Purpose of the Study:

  • To examine pulmonary function test (PFT) abnormalities in children diagnosed with sickle cell anemia (SCA).
  • To assess the impact of SCA on lung function parameters in pediatric patients.

Main Methods:

  • A systematic review and meta-analysis of case-control studies was conducted.
  • Electronic databases (Cochrane library, PubMed, EMBASE, Scopus, Web of Science) were searched for relevant studies.
  • Pulmonary functions were assessed using spirometry, lung volume, and gas diffusion findings in 788 SCA children and 1101 controls.

Main Results:

  • Nine studies were analyzed, involving 788 children with SCA and 1101 controls.
  • Significant decreases were observed in forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) in children with SCA compared to controls.
  • Other assessed parameters like FEV1/FVC ratio, peak expiratory flow rate (PEFR), total lung capacity (TLC), and carbon monoxide diffusing capacity (DLCO) showed non-significant trends towards reduction.

Conclusions:

  • Sickle cell anemia is associated with significantly reduced FEV1 and FVC in children.
  • These findings support the importance of routine pulmonary function monitoring for early detection of lung function decline in pediatric SCA patients, particularly those with a history of ACS.
Abstract

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