Effect of mental stress on left ventricular ejection fraction and its relationship to the severity of coronary artery disease View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2000-10-12

AUTHORS

Toru Kuroda, Yoichi Kuwabara, Satoshi Watanabe, Jiro Nakaya, Rei Hasegawa, Takeshi Shikama, Kouki Matsuno, Yuji Mikami, Kiyotaka Fujii, Toshihiro Saito, Yoshiaki Masuda

ABSTRACT

. To evaluate the relationship between the mental stress-induced decrease in left ventricular ejection fraction (LVEF) and the severity of exercise-induced ischaemia, 20 patients with stable coronary artery disease (CAD) underwent radionuclide ventriculography during mental stress testing and stress myocardial perfusion single-photon emission tomography (SPET). We also examined whether changes in haemodynamic and neurohormonal parameters are related to changes in LVEF during mental stress. The LVEF decreased from 54.8%±17.7% to 49.8%±16.2% with mental stress (P<0.0005). Ten of the 20 patients (50.0%) had a ≥5% decrease in LVEF. The remaining ten patients had no or a <5% decrease in LVEF. There was a significant correlation between the change in LVEF during mental stress and the size of the reversible defect on stress myocardial perfusion SPET (r=–0.80, P<0.0005), with close regional correspondence (75% identical). This correlation was less strong in the 12 patients with a total defect score at rest of <10 (r=–0.69, P=0.014) than in the eight patients with a total defect score at rest of ≥10 (r=–0.94, P=0.001). The changes in blood pressure and heart rate were not significantly correlated with the change in LVEF, but the percent change in adrenaline concentration correlated with the change in LVEF. It is suggested that mental stress impairs systolic function by inducing transient myocardial ischaemia. The effect of neurohormonal responses during mental stress on LV systolic function may also be important in patients with CAD. More... »

PAGES

1760-1767

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URI

http://scigraph.springernature.com/pub.10.1007/s002590000383

DOI

http://dx.doi.org/10.1007/s002590000383

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https://app.dimensions.ai/details/publication/pub.1045673965

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/11189937


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