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  Background & objectives: Heart failure is considered as a major cause of hospitalization. Many studies have shown association between sleep-related breathing disorders and heart failure. It has been shown that the relationship between nocturnal hypoxia and left ventricular dysfunction can cause significant morbidity and mortality in patients with congestive heart failure (CHF ). Accordingly, treatment of sleep related breathing disorders (SRBD) can give rise to improvement in CHF treatment too. This study surveys the prevalence of sleep disorder in stable heart failure patients regardless of ejection fraction.

  Methods : This study was a descriptive-analytical study. One hundred and eight patients with heart failure disease were studied. A questionnaire consisting of two parts (part I consistent of demographic information and part II consistent of sleep disorders) and clinical examination (pulse oximetery and echocardiography) were used for collection of data. The data were analyzed with SPSS statistical software using descriptive and analytical tests including the chi-square, Pearson correlation and ANOVA.

  Results: Fifty six persons (51.9%) of patients were female and 52 persons (48.1%) were male with mean age of 65.42 ± 11 years. In total sleep duration, 95 patients (88%) had nocturnal hypoxemia . There was correlation between arterial oxygen desaturation at night and ejection fraction .

  Conclusion : This study confirmed strong associations between nocturnal hypoxia and left ventricular dysfunction and SRBD should be considered in clinical treatment of systolic heart failure.

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Introduction & objectives: Marital satisfaction is a very important aspect of a couple's relationship that is affected by various factors such as cardiovascular disease. The purpose of this study was to assess the sexual satisfaction based on the left ventricular ejection fraction(LVEF) in patients with coronary artery disease.
Methods: This descriptive  cross-sectional study was performed on 220 patients with acute coronary disease admitted to angiography ward of Shahid Beheshti Hospital of Kashan University of Medical Sciences in 2018. The data collection tools in this study included background and clinical information checklists and Larson's sexual satisfaction questionnaire. Data analysis was performed with chi-square, one-way ANOVA and univariate and multivariate regression test.
Results: The mean sexual satisfaction of all participants was 103.24±13.62. Their average sexual satisfaction in people with LVEF in range of >55%, 45-55%, 35-45% and <35% was 106.29±14.49, 105.95±10.12, 103.84±12.18 and 96.89±17.7 (p=0.041) respectively.
Conclusion: LVEF is an important factor in sexual satisfaction in patients with acute coronary disease and sexual satisfaction decreases by reducing of LVEF.