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Completed

NCT Number: NCT01119755

Seasonal Variation of Ambulatory Blood Pressure

This is a prospective study to evaluate the change in 24 hour ambulatory blood pressure during winter and summer in well controlled treated hypertensives.

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Key information

Conditions

Hypertension Cardiovascular Diseases Vascular Diseases

Age range

40 year–80 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Hypertension Center, Third Department of Medicine, University of Athens, Greece

Athens, Greece

About this study

Two 24hour ambulatory blood pressure monitorings, 4 to 6 months apart, will be performed on hypertensive subjects on a stable antihypertensive drug therapy for at least 4 weeks.

The correlation of weather and temperature with the 24hour ambulatory blood pressure monitoring will be explored.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age > 40 yrs
  • Treated hypertension on stable treatment for at least 8 weeks
  • Average home blood pressure (at least 5 days, 20 readings) < 130/80 mmHg

Exclusion criteria

  • Congestive heart failure
  • Use of loop diuretics

Treatment and study plan

Primary outcomes

  1. Mean Difference of Systolic Daytime Ambulatory Blood Pressure Between Summer and Winter.

    Time frame: 1 year

    Mean difference of systolic daytime ambulatory blood pressure measurement during summer and winter period

  2. Mean Difference of Diastolic Daytime Ambulatory Blood Pressure Between Summer and Winter

    Time frame: 1 year

    Mean Difference of Diastolic Daytime Ambulatory Blood Pressure Measurement During Summer and Winter Period

  3. Mean Difference of Systolic Night-time Ambulatory Blood Pressure Between Summer and Winter

    Time frame: 1 year

    Mean difference of systolic night-time ambulatory blood pressure measurement during summer and winter period

  4. Mean Difference of Diastolic Night-time Ambulatory Blood Pressure Between Summer and Winter

    Time frame: 1 year

Secondary outcomes

  1. Mean Difference of Systolic Clinic Blood Pressure Between Summer and Winter

    Time frame: 1 year

  2. Mean Difference of Diastolic Clinic Blood Pressure Between Summer and Winter

    Time frame: 1 year

  3. Mean Difference of Systolic Home Blood Pressure Between Summer and Winter

    Time frame: 1 year

  4. Mean Difference of Diastolic Home Blood Pressure Between Summer and Winter

    Time frame: 1 year

Sponsors and collaborators

Lead sponsor

University of Athens

Other

Registry information

Official study title

Seasonal Variation of 24hour Ambulatory Blood Pressure Monitoring in Treated Hypertensives

Important dates

Study start
2010
Primary completion
2011
Study completion
2011
First posted
May 10, 2010
Registry last updated
Jan 23, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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