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The Prevalence of Coronary Spasm in Hypertensive Patients Treated With Antihypertensive Medication

NCT01882790 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 1933

Last updated 2013-08-27

No results posted yet for this study

Summary

Autonomic nerve function is involved in both blood pressure (BP) regulation and the pathogenesis of coronary artery spasm(CAS), but few studies have been published about the relationship between CAS and effect of BP lowering drugs in patients with hypertension. The purpose of this study is to investigate the incidence of CAS, atrioventricular (AV) block and effect of BP lowering drugs on CAS in hypertensive patients treated with BP lowering agents. The investigators will register consecutive patients who underwent coronary angiography with an acetylcholine (Ach)-induced provocation test. The investigators will include hypertensive patients who were taking antihypertensive drugs, and exclude patients who had a documented history of cardiovascular disease or who were not treated with antihypertensive agents. CAS is defined as \>70% luminal narrowing on Ach provocation and /or concurrent chest pain. The study population will be divided into quartiles of rising systolic BP and diastolic BP. The incidence of Ach-induced CAS according to each systolic BP/diastolic BP quartile will be evaluated.

Conditions

Sponsors & Collaborators

  • Korea Institute of Science and Technology

    collaborator OTHER

  • Korea University

    lead OTHER

Eligibility

Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2013-05-31
Primary Completion
2013-08-31
Completion
2013-08-31

Countries

  • South Korea

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01882790 on ClinicalTrials.gov