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Advances in Hematology
Volume 2019, Article ID 1783240, 8 pages
https://doi.org/10.1155/2019/1783240
Research Article

Lung Function Abnormalities in Sickle Cell Anaemia

1Department of Haematology, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
2Department of Medicine and therapeutics, School of Medicine and Dentistry, College of Health Sciences, University of Ghana, Accra, Ghana
3Department of Community and Preventive Dentistry, School of Medicine and Dentistry, College of Health Sciences, University of Ghana, Accra, Ghana

Correspondence should be addressed to Yvonne A. Dei-Adomakoh; moc.oohay@modaied

Received 15 November 2018; Revised 31 January 2019; Accepted 26 February 2019; Published 1 April 2019

Academic Editor: Estella M. Matutes

Copyright © 2019 Yvonne A. Dei-Adomakoh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Abnormalities in lung function tests have been shown to commonly occur in a majority of patients with sickle cell disease (SCD) even at steady state. The prevalence and pattern of these lung function abnormalities have been described in other populations but this is unknown among our sickle cell cohort. There is generally little information available on risk factors associated with the lung function abnormalities and its relevance in patient care. Method. This was an analytical cross-sectional study involving 76 clinically stable, hydroxyurea-naive adult Hb-SS participants and 76 nonsickle cell disease (non-SCD) controls. A structured questionnaire was used to obtain sociodemographic data and clinical history of the participants. Investigations performed included spirometry, pulse oximetry, tricuspid regurgitant jet velocity (TRV) measurements via echocardiogram, complete blood counts, free plasma haemoglobin, serum urea, and creatinine. Results. Weight, BMI, mean FVC, and FEV1% predicted values were comparatively lower among the Hb-SS patients (p < 0.001). Abnormal spirometry outcome occurred in 70.4% of Hb-SS patients, predominantly restrictive defects (p < 0.001), and showed no significant association with steady-state Hb, WBC count, free plasma haemoglobin, frequency of sickling crisis, chronic leg ulcers, and TRV measurements (p > 0.05). The mean oxygen saturation was comparatively lower among Hb-SS patients (p < 0.001). Conclusion. Measured lung volumes were significantly lower in Hb-SS patients when compared to non-SCD controls and this difference was not influenced by anthropometric variance. Lung function abnormalities, particularly restrictive defects, are prevalent in Hb-SS patients but showed no significant association with recognized markers of disease severity.