Sleep Habits and AMI and Gensini Score

Study Overview
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Brief Summary
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This study was to examine the effects of sleep habits on acute myocardial infarction (AMI) risk and severity of coronary artery disease (CAD) in Chinese population from two centers. A total of 873 patients were recruited from the inpatient cardiology department of the Affiliated Jiangning Hospital and the First Affiliated Hospital of Nanjing Medical University. Investigators used a 17-item sleep factors questionnaire (SFQ) to evaluate sleep habits comprehensively by face-to-face interview.

Detailed Description
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Growing evidence indicates that poor sleep harms health. Early to bed and early to rise is considered as a healthy lifestyle in Chinese population. The current study aimed to examine the effects of sleep habits on acute myocardial infarction (AMI) risk and severity of coronary artery disease (CAD) in Chinese population from two centers. A total of 873 patients including 314 with AMI were recruited from the inpatient cardiology department of the Affiliated Jiangning Hospital and the First Affiliated Hospital of Nanjing Medical University. 559 controls included 395 CAD cases and 164 non-CAD cases. Investigators used a 17-item sleep factors questionnaire (SFQ) to evaluate sleep habits comprehensively by face-to-face interview. The severity of CAD was assessed by Gensini score in AMI and CAD groups. The effects of sleep factors on AMI risk and Gensini score were examined by unconditional logistic regression. The timing of sleep (24:00 and after), sleep duration (<6h) and frequency of night-time waking (3 times) increased the risk of AMI. In subjects with age ≤60 years, daytime napping reduced the risk of AMI. The correlation between sleep quality and AMI became insignificant after subgroup analysis by age. Short sleep duration also increased the risk of high Gensini score.

Official Title
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Effects of Sleep Habits on Acute Myocardial Infarction Risk and Severity of Coronary Artery Disease in Chinese Population

Conditions
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Sleep Disorder, Acute Myocardial Infarction

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: underwent coronary angiography; can complete sleep factors questionnaire. Exclusion Criteria: mental diseases; sleep apnea; chronic obstructive pulmonary disease; stroke sequelae; arthritis; renal failure; tumor and a history of revascularization.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| control group<br>Patients hospitalized and diagnosed as non-AMI during the same time period were matched. All patients underwent coronary angiography and CAD was defined as at least one main coronary artery with > 50% narrowing of luminal diameter. | |
| AMI group<br>Patients were diagnosed as MI when a cardiac biomarker (preferably cardiac troponin) rose or fell at least one value in its 99th percentile upper reference limit and at least one of the following criteria was met, including ischemic symptoms, electrocardiogram (ECG) changes of new ischemia, pathologic Q waves in the ECG, imaging evidence of new loss of viable myocardium or new regional wall motion abnormality, identification of an intracoronary thrombus by angiography or autopsy. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| a 17-item sleep factors questionnaire | SFQ included sleep quality, sleep duration at night, timing of sleep and waking up, insomnia and night-time waking frequency, sleep medication use, night work, daytime napping, light at night (LAN) exposure and sleep noise. | in the last year before enrollment | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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sleep habits, sleep duration, daytime napping, Gensini score, late sleeping