The effect of heart rate reduction by ivabradine on collateral function in patients with chronic stable coronary artery disease

Glökler, Steffen; Traupe, Tobias; Stoller, Michael; Schild, Deborah; Steck, Hélène; Khattab, Ahmed Aziz; Vogel, Rolf; Seiler, Christian (2014). The effect of heart rate reduction by ivabradine on collateral function in patients with chronic stable coronary artery disease. Heart, 100(2), pp. 160-166. BMJ Publishing Group 10.1136/heartjnl-2013-304880

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Objective To evaluate the effect of heart rate reduction by ivabradine on coronary collateral function in patients with chronic stable coronary artery disease (CAD). Methods This was a prospective randomised placebo-controlled monocentre trial in a university hospital setting. 46 patients with chronic stable CAD received placebo (n=23) or ivabradine (n=23) for the duration of 6 months. The main outcome measure was collateral flow index (CFI) as obtained during a 1 min coronary artery balloon occlusion at study inclusion (baseline) and at the 6-month follow-up examination. CFI is the ratio between simultaneously recorded mean coronary occlusive pressure divided by mean aortic pressure both subtracted by mean central venous pressure. Results During follow-up, heart rate changed by +0.2±7.8 beats/min in the placebo group, and by –8.1±11.6 beats/min in the ivabradine group (p=0.0089). In the placebo group, CFI decreased from 0.140±0.097 at baseline to 0.109±0.067 at follow-up (p=0.12); it increased from 0.107±0.077 at baseline to 0.152±0.090 at follow-up in the ivabradine group (p=0.0461). The difference in CFI between the 6-month follow-up and baseline examination amounted to −0.031±0.090 in the placebo group and to +0.040±0.094 in the ivabradine group (p=0.0113). Conclusions Heart rate reduction by ivabradine appears to have a positive effect on coronary collateral function in patients with chronic stable CAD.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Kardiologie
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Kardiologie

UniBE Contributor:

Glökler, Steffen; Traupe, Tobias; Stoller, Michael; Steck, Hélène; Khattab, Ahmed Aziz; Vogel, Rolf and Seiler, Christian

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1355-6037

Publisher:

BMJ Publishing Group

Funders:

[4] Swiss National Science Foundation

Language:

English

Submitter:

Michael Stoller

Date Deposited:

24 Mar 2014 09:53

Last Modified:

02 Nov 2015 10:24

Publisher DOI:

10.1136/heartjnl-2013-304880

PubMed ID:

24186565

BORIS DOI:

10.7892/boris.43638

URI:

https://boris.unibe.ch/id/eprint/43638

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