Correlation of diaphragmatic ultrasound with pulmonary function testing in patients with chronic cervical spinal cord injury: A single center pilot study Journal Article


Authors: Stone, S. N.; Huh, S.; O'Connor, J.; Murphy, L.; Kirshblum, S.
Article Title: Correlation of diaphragmatic ultrasound with pulmonary function testing in patients with chronic cervical spinal cord injury: A single center pilot study
Abstract: Context/ObjectivePulmonary function tests are the gold standard of evaluating pulmonary function in individuals with a spinal cord injury (SCI). However, there are limitations to its accessibility thereby reducing its clinical utility. Diaphragmatic ultrasound is used to evaluate pulmonary function in non-neurologic individuals but there is limited evidence demonstrating its benefit in individuals with SCI. The objective is to determine if diaphragmatic ultrasound measurements are correlated with forced vital capacity (FVC), peak cough flow (PCF), neurological level of injury (NLI), and/or motor level.Design & SettingA pilot study at a single rehabilitation hospital.ParticipantsIndividuals >= 18yo with traumatic and non-traumatic SCI for >= 6 months with NLI from C1-C6, and ASIA Impairment Scale scores A, B, or C.InterventionsN/A.Outcome MeasuresAssociations between FVC, PCF, and diaphragmatic ultrasound measurements (thickness at total lung capacity, thickness at functional residual capacity, and right diaphragm excursion). Also, associations between diaphragmatic ultrasound measurements with NLI and motor level.ResultsSignificant associations were detected between the thickening ratio and FVC (r = 0.5384, P = 0.047), diaphragm excursion with FVC (r = 0.5757, P = 0.0395), and diaphragm excursion with PCF (r = 0.8061, P = 0.009). Thickness at functional residual capacity and thickness at total lung capacity were not significantly associated with FVC nor PCF. No significant association was found between NLI or motor level with any of the recorded pulmonary or diaphragmatic measures.ConclusionDiaphragmatic ultrasound is a promising tool in the evaluation of two parameters of pulmonary function in those with cervical SCI. A larger, longitudinal study to confirm these findings and evaluate for normative values would be beneficial.
Keywords: diagnostic imaging; motion; diaphragm; management; ultrasonography; spinal cord injuries; care; level; impairment; pulmonary function tests; cough peak flow; excursion
Journal Title: Journal of Spinal Cord Medicine
ISSN: 1079-0268
Publisher: Taylor & Francis Group  
Publication status: Online ahead of print
Date Published: 2025-01-01
Online Publication Date: 2025-01-01
Language: English
ACCESSION: WOS:001541166900001
DOI: 10.1080/10790268.2025.2534262
PROVIDER: wos
Notes: Article; Early Access -- Source: Wos
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