Journal article
Pulmonary Blood Volume Among Older Adults in the Community: The MESA Lung Study
Circulation. Cardiovascular imaging, Vol.15(8), p.e014380
08/01/2022
DOI: 10.1161/CIRCIMAGING.122.014380
PMCID: PMC9387743
PMID: 35938411
Abstract
BACKGROUND: The pulmonary vasculature is essential for gas exchange and impacts both pulmonary and cardiac function. However, it is difficult to assess and its characteristics in the general population are unknown. We measured pulmonary blood volume (PBV) noninvasively using contrast enhanced, dual-energy computed tomography to evaluate its relationship to age and symptoms among older adults in the community. METHODS: The MESA (Multi-Ethnic Study of Atherosclerosis) is an ongoing community-based, multicenter cohort. All participants attending the most recent MESA exam were selected for contrast enhanced dual-energy computed tomography except those with estimated glomerular filtration rate <60 mL/min per 1.73 m 2 . PBV was calculated by material decomposition of dual-energy computed tomography images. Multivariable models included age, sex, race/ethnicity, education, height, weight, smoking status, pack-years, and scanner model. RESULTS: The mean age of the 727 participants was 71 (range 59-94) years, and 55% were male. The race/ethnicity distribution was 41% White, 29% Black, 17% Hispanic, and 13% Asian. The meanØSD PBV in the youngest age quintile was 547Ø180 versus 433Ø194 mL in the oldest quintile ( P <0.001), with an approximately linear decrement of 50 mL per 10 years of age ([95% CI, 32-67]; P <0.001). Findings were similar with multivariable adjustment. Lower PBV was associated independently with a greater dyspnea after a 6-minute walk ( P =0.04) and greater composite dyspnea symptom scores ( P =0.02). Greater PBV was also associated with greater height, weight, lung volume, Hispanic race/ethnicity, and nonsmoking history. CONCLUSIONS: Pulmonary blood volume was substantially lower with advanced age and was associated independently with greater symptoms scores in the elderly.
Details
- Title: Subtitle
- Pulmonary Blood Volume Among Older Adults in the Community: The MESA Lung Study
- Creators
- Emilia A Hermann - Columbia University Irving Medical CenterAmin Motahari - University of IowaEric A Hoffman - University of IowaNorrina Allen - Northwestern UniversityAlain G Bertoni - Wake Forest UniversityDavid A Bluemke - University of Wisconsin–MadisonAli Eskandari - University of IowaSarah E Gerard - University of Iowa, Roy J. Carver Department of Biomedical EngineeringJunfeng Guo - University of Iowa, RadiologyGrant T HiuraDavid W Kaczka - AnesthesiaErin D Michos - Johns Hopkins UniversityPrashant Nagpal - University of Iowa, RadiologyJim PankowSanjiv Shah - Northwestern Memorial HospitalBenjamin M. Smith - Columbia UniversityKaren Hinckley StukovskyYifei SunKarol Watson - University of California, Los AngelesR Graham Barr - Columbia University Irving Medical Center
- Resource Type
- Journal article
- Publication Details
- Circulation. Cardiovascular imaging, Vol.15(8), p.e014380
- DOI
- 10.1161/CIRCIMAGING.122.014380
- PMID
- 35938411
- PMCID
- PMC9387743
- NLM abbreviation
- Circ Cardiovasc Imaging
- ISSN
- 1941-9651
- eISSN
- 1942-0080
- Publisher
- Lippincott Williams & Wilkins, WK Health
- Language
- English
- Date published
- 08/01/2022
- Description audience
- Academic
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology; Anesthesia; Internal Medicine
- Record Identifier
- 9984296152702771
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