Gender aspects on exercise-induced ECG changes in relation to scintigraphic evidence of myocardial ischaemia

Research output: Contribution to journalArticle

Abstract

Background: This retrospective study aimed to determine the diagnostic performance of exercise-induced ST response in relation to findings by myocardial perfusion single photon emission computed tomography (MPS), with focus on gender differences, in patients with suspected or established stable ischemic heart disease. Methods: MPS findings of 1 021 patients (518 females) were related to the exercise-induced ST response alone (blinded and unblinded to gender) and ST response together with additional exercise stress test (EST) variables (exercise capacity, blood pressure and heart rate response). Results: Exercise-induced ischaemia by MPS was found in 9% of females and 23% of males. Diagnostic performance of exercise-induced ST response in relation to MPS findings in females versus males was: sensitivity = 48%,70%; specificity = 67%, 64%; PPV = 13%, 38%; NPV = 93%, 87%. Adding more EST variables to the ST response interpretation yielded in females vs males: sensitivity = 44%, 51%; specificity = 84%, 83%; PPV = 22%, 48% and NPV = 93%, 85%. Conclusions: In patients who have performed EST in conjunction with MPS, there is a gender difference in the diagnostic performance of ST response at stress, with a significantly lower PPV in females compared to males. For both genders, specificity can be significantly improved, and a higher PPV can be obtained, while the sensitivity might be compromised by considering more EST variables, in addition to the ST response.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Radiology, Nuclear Medicine and Medical Imaging

Keywords

  • Chronic myocardial ischaemia, Electrocardiography, Exercise, Gender, Myocardial perfusion SPECT
Original languageEnglish
Pages (from-to)798-807
JournalClinical Physiology and Functional Imaging
Volume38
Issue number5
Early online date2017
Publication statusPublished - 2018 Sep
Publication categoryResearch
Peer-reviewedYes

Related research output

Shahnaz Akil, 2018, Lund: Lund University, Faculty of Medicine. 61 p.

Research output: ThesisDoctoral Thesis (compilation)

View all (1)