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Ducas RA, Elliott JE, Melnyk SF, Premecz S, daSilva M, Cleverley K, Wtorek P, Mackenzie GS, Helewa ME, Jassal DS. Cardiovascular magnetic resonance in pregnancy: insights from the cardiac hemodynamic imaging and remodeling in pregnancy (CHIRP) study. J Cardiovasc Magn Reson 2014; 16:1. [PMID: 24387349 PMCID: PMC3882291 DOI: 10.1186/1532-429x-16-1] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 12/11/2013] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Cardiovascular disease in pregnancy is the leading cause of maternal mortality in North America. Although transthoracic echocardiography (TTE) is the most widely used imaging modality for the assessment of cardiovascular function during pregnancy, little is known on the role of cardiovascular magnetic resonance (CMR). The objective of the Cardiac Hemodynamic Imaging and Remodeling in Pregnancy (CHIRP) study was to compare TTE and CMR in the non-invasive assessment of maternal cardiac remodeling during the peripartum period. METHODS Between 2010-2012, healthy pregnant women aged 18 to 35 years were prospectively enrolled. All women underwent TTE and CMR during the third trimester and at least 3 months postpartum (surrogate for non-pregnant state). RESULTS The study population included a total of 34 women (mean age 29 ± 3 years). During the third trimester, TTE and CMR demonstrated an increase in left ventricular end-diastolic volume from 95 ± 11 mL to 115 ± 14 mL and 98 ± 6 mL to 125 ± 5 mL, respectively (p<0.05). By TTE and CMR, there was also an increase in left ventricular (LV) mass during pregnancy from 111 ± 10 g to 163 ± 11 g and 121 ± 5 g to 179 ± 5 g, respectively (p<0.05). Although there was good correlation between both imaging modalities for LV mass, stroke volume, and cardiac output, the values were consistently underestimated by TTE. CONCLUSION This CMR study provides reference values for cardiac indices during normal pregnancy and the postpartum state.
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Affiliation(s)
- Robin A Ducas
- Section of Cardiology, Department of Internal Medicine, Faculty of Medicine, University of Manitoba, Rm Y3531, Bergen Cardiac Care Centre, St. Boniface General Hospital, 409 Tache Avenue, Winnipeg, Manitoba R2H 2A6, Canada
| | - Jason E Elliott
- Department of Obstetrics, Gynecology & Reproductive Sciences, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Steven F Melnyk
- Institute of Cardiovascular Sciences, St. Boniface Research Centre, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Sheena Premecz
- Institute of Cardiovascular Sciences, St. Boniface Research Centre, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Megan daSilva
- Institute of Cardiovascular Sciences, St. Boniface Research Centre, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Kelby Cleverley
- Institute of Cardiovascular Sciences, St. Boniface Research Centre, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Piotr Wtorek
- Institute of Cardiovascular Sciences, St. Boniface Research Centre, University of Manitoba, Winnipeg, Manitoba, Canada
| | - G Scott Mackenzie
- Section of Cardiac Anesthesia, Department of Anesthesia, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Michael E Helewa
- Department of Obstetrics, Gynecology & Reproductive Sciences, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Davinder S Jassal
- Section of Cardiology, Department of Internal Medicine, Faculty of Medicine, University of Manitoba, Rm Y3531, Bergen Cardiac Care Centre, St. Boniface General Hospital, 409 Tache Avenue, Winnipeg, Manitoba R2H 2A6, Canada
- Institute of Cardiovascular Sciences, St. Boniface Research Centre, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Radiology, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
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