Effects of Anxiety on Coronary Microcirculatory Function in Hypertensive Patients

Study Overview
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Brief Summary
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This study assessed anxiety status and coronary flow reserve in hypertensive patients to investigate the effects of anxiety on coronary microcirculatory function.

Detailed Description
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This study assessed anxiety status and coronary flow reserve in hypertensive patients to investigate the effects of anxiety on coronary microcirculatory function.The hypertensive patients with chest pain for suspicious coronary heart disease were seriesly enrolled. All the patients underwent coronary angiography or coronary CT angiography to exclude the diagnosis of obstructive coronary artery disease . Coronary flow reserve (CFR) is an integrated measure of flow through both the large epicardial arteries and the coronary microcirculation. In the absence of obstructive stenosis of the epicardial arteries, CFR is an indicator of coronary microcirculatory function，which can be assayed by Transthoracic Doppler echocardiography. The symptoms of anxiety were measured with Self-rating Anxiety Scale (SAS) . According to the SAS score,the patients were divided into anxiety group and non-anxiety group.We assessed the association of anxiety with coronary microcirculatory function.

Official Title
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Effects of Anxiety on Coronary Microcirculatory Function in Hypertensive Patients

Conditions
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Coronary Microvascular Disease, Anxiety State

Intervention / Treatment
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* Diagnostic Test: coronary flow reserve (CFR)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients with clear diagnosis of hypertension (≥1 year, drug control within 140/90mmHg); (2) Significant coronary artery stenosis was excluded by imaging within 1 year (≤50%); (3) Age between 18 and 80. Exclusion Criteria: CHD, heart valve disease, congenital heart disease, cardiomyopathy and pericardial disease; (2) Left ventricular ejection fraction (LVEF) <50%; (3) Increased markers of myocardial injury; (4) Diabetes mellitus, connective tissue disease, chronic obstructive pulmonary disease and malignant tumor; 5) Severe hepatic and renal impairment (Cr ≥120 umol/L, ALT ≥120 umol/L); 6) Pregnant women.

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 |
| --- | --- |
| anxiety group<br>the score of Self-rating Anxiety Scale greater than 50 | Diagnostic Test: coronary flow reserve (CFR)<br>* Coronary flow velocity profiles in the left anterior descending artery were obtained using colour-guided pulse wave Doppler. We measured peak diastolic coronary flow velocity of the diastolic coronary waveform at rest and after ATP infusion (140 µg/kg. min) for 2 min. The CFR was calculated as the ratio of hyperaemic peak diastolic velocity to resting baseline diastolic velocity. All patients abstained from caffeine-containing drinks for at least 24h before testing.<br>|
| non-anxiety group<br>the score of Self-rating Anxiety Scale less than 50 | Diagnostic Test: coronary flow reserve (CFR)<br>* Coronary flow velocity profiles in the left anterior descending artery were obtained using colour-guided pulse wave Doppler. We measured peak diastolic coronary flow velocity of the diastolic coronary waveform at rest and after ATP infusion (140 µg/kg. min) for 2 min. The CFR was calculated as the ratio of hyperaemic peak diastolic velocity to resting baseline diastolic velocity. All patients abstained from caffeine-containing drinks for at least 24h before testing.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Coronary flow reserve | Coronary flow reserve (CFR) is an integrated measure of flow through both the large epicardial arteries and the coronary microcirculation. In the absence of obstructive stenosis of the epicardial arteries, CFR is an index of coronary microcirculatory function. | baseline | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Inflammatory mediators | Inflammatory mediators were measured using Quantibody Human Immune Response Array. | baseline | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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anxiety, coronary microcirculatory function, hypertension