Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failure
<p>Abstract</p> <p>Background</p> <p>Cardiovascular Magnetic Resonance (CMR) enables non-invasive quantification of cardiac output (CO) and thereby cardiac index (CI, CO indexed to body surface area). The aim of this study was to establish if CI decreases with age and c...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2012-07-01
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| Series: | Journal of Cardiovascular Magnetic Resonance |
| Subjects: | |
| Online Access: | http://www.jcmr-online.com/content/14/1/51 |
| _version_ | 1797204307432439808 |
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| author | Carlsson Marcus Andersson Ruslana Bloch Karin Steding-Ehrenborg Katarina Mosén Henrik Stahlberg Freddy Ekmehag Bjorn Arheden Hakan |
| author_facet | Carlsson Marcus Andersson Ruslana Bloch Karin Steding-Ehrenborg Katarina Mosén Henrik Stahlberg Freddy Ekmehag Bjorn Arheden Hakan |
| author_sort | Carlsson Marcus |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Cardiovascular Magnetic Resonance (CMR) enables non-invasive quantification of cardiac output (CO) and thereby cardiac index (CI, CO indexed to body surface area). The aim of this study was to establish if CI decreases with age and compare the values to CI for athletes and for patients with congestive heart failure (CHF).</p> <p>Methods</p> <p>CI was measured in 144 healthy volunteers (39 ± 16 years, range 21–81 years, 68 females), in 60 athletes (29 ± 6 years, 30 females) and in 157 CHF patients with ejection fraction (EF) below 40% (60 ± 13 years, 33 females). CI was calculated using aortic flow by velocity-encoded CMR and is presented as mean ± SD. Flow was validated in vitro using a flow phantom and in 25 subjects with aorta and pulmonary flow measurements.</p> <p>Results</p> <p>There was a slight decrease of CI with age in healthy subjects (8 ml/min/m<sup>2</sup> per year, r<sup>2</sup> = 0.07, p = 0.001). CI in males (3.2 ± 0.5 l/min/m<sup>2</sup>) and females (3.1 ± 0.4 l/min/m<sup>2</sup>) did not differ (p = 0.64). The mean ± SD of CI in healthy subjects in the age range of 20–29 was 3.3 ± 0.4 l/min/m<sup>2</sup>, in 30–39 years 3.3 ± 0.5 l/min/m<sup>2</sup>, in 40–49 years 3.1 ± 0.5 l/min/m<sup>2</sup>, 50–59 years 3.0 ± 0.4 l/min/m<sup>2</sup> and >60 years 3.0 ± 0.4 l/min/m<sup>2</sup>. There was no difference in CI between athletes and age-controlled healthy subjects but HR was lower and indexed SV higher in athletes. CI in CHF patients (2.3 ± 0.6 l/min/m<sup>2</sup>) was lower compared to the healthy population (p < 0.001). There was a weak correlation between CI and EF in CHF patients (r<sup>2</sup> = 0.07, p < 0.001) but CI did not differ between patients with NYHA-classes I-II compared to III-IV (n = 97, p = 0.16) or patients with or without hospitalization in the previous year (n = 100, p = 0.72). In vitro phantom validation showed low bias (−0.8 ± 19.8 ml/s) and in vivo validation in 25 subjects also showed low bias (0.26 ± 0.61 l/min, QP/QS 1.04 ± 0.09) between pulmonary and aortic flow.</p> <p>Conclusions</p> <p>CI decreases in healthy subjects with age but does not differ between males and females. We found no difference in CI between athletes and healthy subjects at rest but CI was lower in patients with congestive heart failure. The presented values can be used as reference values for flow velocity mapping CMR.</p> |
| first_indexed | 2024-04-13T10:30:16Z |
| format | Article |
| id | doaj.art-2b0bfc9fcfc44641adb0c8ca703d96d4 |
| institution | Directory Open Access Journal |
| issn | 1097-6647 1532-429X |
| language | English |
| last_indexed | 2024-04-24T08:33:09Z |
| publishDate | 2012-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Cardiovascular Magnetic Resonance |
| spelling | doaj.art-2b0bfc9fcfc44641adb0c8ca703d96d42024-04-16T18:47:22ZengElsevierJournal of Cardiovascular Magnetic Resonance1097-66471532-429X2012-07-011415110.1186/1532-429X-14-51Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failureCarlsson MarcusAndersson RuslanaBloch KarinSteding-Ehrenborg KatarinaMosén HenrikStahlberg FreddyEkmehag BjornArheden Hakan<p>Abstract</p> <p>Background</p> <p>Cardiovascular Magnetic Resonance (CMR) enables non-invasive quantification of cardiac output (CO) and thereby cardiac index (CI, CO indexed to body surface area). The aim of this study was to establish if CI decreases with age and compare the values to CI for athletes and for patients with congestive heart failure (CHF).</p> <p>Methods</p> <p>CI was measured in 144 healthy volunteers (39 ± 16 years, range 21–81 years, 68 females), in 60 athletes (29 ± 6 years, 30 females) and in 157 CHF patients with ejection fraction (EF) below 40% (60 ± 13 years, 33 females). CI was calculated using aortic flow by velocity-encoded CMR and is presented as mean ± SD. Flow was validated in vitro using a flow phantom and in 25 subjects with aorta and pulmonary flow measurements.</p> <p>Results</p> <p>There was a slight decrease of CI with age in healthy subjects (8 ml/min/m<sup>2</sup> per year, r<sup>2</sup> = 0.07, p = 0.001). CI in males (3.2 ± 0.5 l/min/m<sup>2</sup>) and females (3.1 ± 0.4 l/min/m<sup>2</sup>) did not differ (p = 0.64). The mean ± SD of CI in healthy subjects in the age range of 20–29 was 3.3 ± 0.4 l/min/m<sup>2</sup>, in 30–39 years 3.3 ± 0.5 l/min/m<sup>2</sup>, in 40–49 years 3.1 ± 0.5 l/min/m<sup>2</sup>, 50–59 years 3.0 ± 0.4 l/min/m<sup>2</sup> and >60 years 3.0 ± 0.4 l/min/m<sup>2</sup>. There was no difference in CI between athletes and age-controlled healthy subjects but HR was lower and indexed SV higher in athletes. CI in CHF patients (2.3 ± 0.6 l/min/m<sup>2</sup>) was lower compared to the healthy population (p < 0.001). There was a weak correlation between CI and EF in CHF patients (r<sup>2</sup> = 0.07, p < 0.001) but CI did not differ between patients with NYHA-classes I-II compared to III-IV (n = 97, p = 0.16) or patients with or without hospitalization in the previous year (n = 100, p = 0.72). In vitro phantom validation showed low bias (−0.8 ± 19.8 ml/s) and in vivo validation in 25 subjects also showed low bias (0.26 ± 0.61 l/min, QP/QS 1.04 ± 0.09) between pulmonary and aortic flow.</p> <p>Conclusions</p> <p>CI decreases in healthy subjects with age but does not differ between males and females. We found no difference in CI between athletes and healthy subjects at rest but CI was lower in patients with congestive heart failure. The presented values can be used as reference values for flow velocity mapping CMR.</p>http://www.jcmr-online.com/content/14/1/51Cardiac outputHeart failureLeft ventricleCardiovascular magnetic resonance |
| spellingShingle | Carlsson Marcus Andersson Ruslana Bloch Karin Steding-Ehrenborg Katarina Mosén Henrik Stahlberg Freddy Ekmehag Bjorn Arheden Hakan Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failure Journal of Cardiovascular Magnetic Resonance Cardiac output Heart failure Left ventricle Cardiovascular magnetic resonance |
| title | Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failure |
| title_full | Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failure |
| title_fullStr | Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failure |
| title_full_unstemmed | Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failure |
| title_short | Cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects, elite athletes and patients with congestive heart failure |
| title_sort | cardiac output and cardiac index measured with cardiovascular magnetic resonance in healthy subjects elite athletes and patients with congestive heart failure |
| topic | Cardiac output Heart failure Left ventricle Cardiovascular magnetic resonance |
| url | http://www.jcmr-online.com/content/14/1/51 |
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