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Japan Morning Surge-1 Study

This study has been completed.
Information provided by:
Japan Heart Foundation Identifier:
First received: January 24, 2006
Last updated: February 1, 2006
Last verified: February 2006
The purpose of this study is to examine whether strict blood pressure (BP) control by doxazosin using home BP monitoring, especially targeting the morning BP level, can reduce hypertensive target organ damage.

Condition Intervention Phase
Hypertension Drug: Doxazosin (drug) Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: The Effects of Controlling Morning Hypertension on Target Organ Damage With Adrenergic Blockers, Based on Self-Measured Morning Blood Pressure Readings

Resource links provided by NLM:

Further study details as provided by Japan Heart Foundation:

Primary Outcome Measures:
  • brain natriuretic peptide and the urinary albumin excretion/creatinine ratio at 6 months

Estimated Enrollment: 600
Study Start Date: August 2003
Estimated Study Completion Date: August 2005
Detailed Description:
Morning blood pressure may play an important role in the pathogenesis of hypertensive target organ damage. Increased sympathetic nerve activity is reported to be one of the mechanisms of morning hypertension; however, there are no available data that show whether strict home blood pressure control, especially in the morning period, can reduce target organ damage.We will evaluate whether strict morning blood pressure control by sympathetic nervous system blockade using an alfa-blocker, doxazosin, and with the addition of a beta-blocker if needed, can reduce hypertensive target organ damage.

Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Morning systolic blood pressure >135 mmHg in a sitting position at home while on stable antihypertensive medication for at least 3 months

Exclusion Criteria:

  • History of heart failure
  • Presence of orthostatic hypotension, dementia, malignancy and chronic inflammatory disease
  • Taking an alfa-blocker or beta-blocker
  • Atrial fibrillation or atrial flutter
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Please refer to this study by its identifier: NCT00285519

Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine
Shimotsuke, Tochigi, Japan, 329-0498
Sponsors and Collaborators
Japan Heart Foundation
Study Chair: Kazuomi Kario, MD, PhD Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine
  More Information

Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00285519     History of Changes
Other Study ID Numbers: JHF-03-143
Study First Received: January 24, 2006
Last Updated: February 1, 2006

Keywords provided by Japan Heart Foundation:
Morning hypertension

Additional relevant MeSH terms:
Vascular Diseases
Cardiovascular Diseases
Antihypertensive Agents
Adrenergic alpha-1 Receptor Antagonists
Adrenergic alpha-Antagonists
Adrenergic Antagonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs processed this record on July 21, 2017