Abstract
Whether sex differences exist in cardiac magnetic resonance (CMR) findings in patients with hypertrophic cardiomyopathy (HCM) remain unknown. We sought to assess and compare CMR characteristics in male and female patients with HCM. From January-2006 to October-2017, 165 consecutive HCM patients evaluated with CMR were included. All clinical and complementary test information was prospectively collected. At the time of CMR evaluation women were older (70 [57–75] vs. 61 [47–72] years, p = 0.02) and more symptomatic in terms of dyspnea (New York Heart Association class II–IV 47.2 vs. 24.1%, p = 0.003) and palpitations (19.6 vs. 4.6%, p = 0.006) and received more frequently treatment with diuretics (49.1% vs. 23.4%, p = 0.001). On echocardiographic examination more women had obstructive physiology (45.1 vs. 20.6%, p = 0.002). On CMR evaluation, women showed smaller left ventricular end-systolic volume index (13 [10–15] vs. 16 [13–21] ml/m2, p < 0.001), higher left ventricular ejection fraction (77 [74–80] vs. 72 [66–78]%, p = 0.004), more marked left ventricular outflow tract acceleration (54.7 vs. 26.4%, p < 0.001) and mitral regurgitation (33.3 vs. 12.7%, p = 0.002). In multivariable analysis, female sex [OR 2.44 (1.04–5.73), p = 0.04] and left ventricular end-systolic volume index [OR 1.60 (1.08–2.38), p = 0.018] were independently associated with obstructive physiology. Women with HCM have more frequently obstructive physiology, a finding that could be related to the smaller left ventricular end-systolic volume.
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The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.
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MTNR performed analysis and interpretation of CMR studies. Also collected, analyzed and interpreted the patient data and was a major contributor in writing the manuscript. MJO, PC, SH, AC and LJJB performed analysis and interpretation of CMR studies. AC, LJJB and FA interpreted patient data and were major contributors in writing the manuscript. All authors read and approved the final manuscript.
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Nogales-Romo, M.T., Cecconi, A., Olivera, M.J. et al. Sex differences in cardiac magnetic resonance features in patients with hypertrophic cardiomyopathy. Int J Cardiovasc Imaging 36, 1751–1759 (2020). https://doi.org/10.1007/s10554-020-01880-y
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DOI: https://doi.org/10.1007/s10554-020-01880-y