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"Duchenne muscular dystrophy is associated with progressive cardiorespiratory failure, including left ventricular dysfunction." (ref: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8941672/)
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For patients with DMD, it is important to ensure the height and weight are current since cardiac index and spirometry results are affected by body surface area (ref: https://www.ahajournals.org/doi/10.1161/CIRCIMAGING.115.003810). Height and weight are represented in the vital signs domain; see Section 6.3.13 of the SDTMIG v3.4 (https://www.cdisc.org/standards/foundational/sdtmig) for more information. The patient's age also plays a role in the assessment analysis. Age is represented in the demographics domain; see Section 5.2 of the SDTMIG v3.4 (https://www.cdisc.org/standards/foundational/sdtmig). At the point of the study, the age may be collected or referenced.
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