NCT03209154

Brief Summary

The aim of the study is to investigate and explore the most important aspects of drug-adherence in the treatment of hypertension in order to improve treatment and blood pressure control, implying that new knowledge will reduce morbidity and mortality.

Trial Health

55
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
1,000

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Nov 2017

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 4, 2017

Completed
2 days until next milestone

First Posted

Study publicly available on registry

July 6, 2017

Completed
4 months until next milestone

Study Start

First participant enrolled

November 1, 2017

Completed
5.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2022

Completed
3 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2025

Completed
Last Updated

March 25, 2025

Status Verified

March 1, 2025

Enrollment Period

5.2 years

First QC Date

July 4, 2017

Last Update Submit

March 20, 2025

Conditions

Keywords

AdherenceTherapeutic Drug MonitoringPatient perspective

Outcome Measures

Primary Outcomes (1)

  • Blood pressure control

    Change in systolic daytime ambulatory blood pressure.

    3 months after baseline

Study Arms (2)

Study Group

EXPERIMENTAL

Study Group intervention: Therapeutic drug monitoring.

Diagnostic Test: Therapeutic drug monitoring

Control Group

ACTIVE COMPARATOR

Control Group intervention: No intervention first 3 months. After 3 months of follow-up, half of the patients in the Control Group will be randomized to perform home blood pressure monitoring as an intervention. No intervention in the other half.

Device: Home blood pressure monitoring

Interventions

Therapeutic drug monitoring will be performed.

Study Group

Patients will perform home blood pressure monitoring at home.

Control Group

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Signed informed consent
  • Uncontrolled hypertension
  • A stable medication regimen for at least 4 weeks of ≥ 2 antihypertensive agents
  • No planned changes in antihypertensive drugs

You may not qualify if:

  • Withdrawal of consent
  • h systolic ambulatory blood pressure \>/= 170 mmHg
  • Patients with inadequate Norwegian language skills
  • Positive pregnancy test
  • Known alcohol or drug abuse
  • estimated glomerular filtration rate \<30 mL/min/1.73m2
  • Albumin/creatinin ratio \>300 mg/mmol
  • Any reason why, in the opinion of the investigator, the patient should not participate

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Oslo University Hospital

Oslo, 0424, Norway

Location

Related Publications (5)

  • Rognstad S, Soraas CL, Brunborg C, Halvorsen LV, Brobak KM, Olsen E, Bergland OU, Aune A, Tuv SS, Svarstad AC, Clasen PE, Haldsrud R, Larstorp ACK, Helland A, Opdal MS. Pharmacokinetic Variability of Amlodipine Serum Concentration and Effect on Blood Pressure in Patients Treated for Hypertension. Pharmacol Res Perspect. 2025 Aug;13(4):e70140. doi: 10.1002/prp2.70140.

  • Halvorsen LV, Soraas CL, Larstorp ACK, Hjornholm U, Kjaer VN, Liestol K, Aune A, Olsen E, Brobak KM, Bergland OU, Rognstad S, Aarskog NR, Heimark S, Fadl Elmula FEM, Gerdts E, Mo R, Solbu MD, Opdal MS, Kjeldsen SE, Rostrup M, Hoieggen A. Effect of Therapeutic Drug Monitoring on Adherence and Blood Pressure: A Multicenter Randomized Clinical Trial. Am J Hypertens. 2024 Sep 16;37(10):826-836. doi: 10.1093/ajh/hpae059.

  • Brobak KM, Halvorsen LV, Aass HCD, Soraas CL, Aune A, Olsen E, Bergland OU, Rognstad S, Blom KB, Birkeland JAK, Hoieggen A, Larstorp ACK, Solbu MD. Novel biomarkers in patients with uncontrolled hypertension with and without kidney damage. Blood Press. 2024 Dec;33(1):2323980. doi: 10.1080/08037051.2024.2323980. Epub 2024 Apr 12.

  • Aune A, Ohldieck A, Halvorsen LV, Brobak KM, Olsen E, Rognstad S, Larstorp ACK, Soraas CL, Rossebo AB, Rosner A, Grytaas MA, Gerdts E. Gender Differences in Cardiac Organ Damage in Arterial Hypertension: Assessing the Role of Drug Nonadherence. High Blood Press Cardiovasc Prev. 2024 Mar;31(2):157-166. doi: 10.1007/s40292-024-00632-6. Epub 2024 Mar 26.

  • Bergland OU, Halvorsen LV, Soraas CL, Hjornholm U, Kjaer VN, Rognstad S, Brobak KM, Aune A, Olsen E, Fauchald YM, Heimark S, Thorstensen CW, Liestol K, Solbu MD, Gerdts E, Mo R, Rostrup M, Kjeldsen SE, Hoieggen A, Opdal MS, Larstorp ACK, Fadl Elmula FEM. Detection of Nonadherence to Antihypertensive Treatment by Measurements of Serum Drug Concentrations. Hypertension. 2021 Sep;78(3):617-628. doi: 10.1161/HYPERTENSIONAHA.121.17514. Epub 2021 Jul 19.

MeSH Terms

Interventions

Drug MonitoringBlood Pressure Monitoring, Ambulatory

Intervention Hierarchy (Ancestors)

Monitoring, PhysiologicDiagnostic Techniques and ProceduresDiagnosisBlood Pressure DeterminationDiagnostic Techniques, CardiovascularMonitoring, Ambulatory

Study Officials

  • Sverre E Kjeldsen, MD PhD

    Oslo University Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

July 4, 2017

First Posted

July 6, 2017

Study Start

November 1, 2017

Primary Completion

December 31, 2022

Study Completion

December 31, 2025

Last Updated

March 25, 2025

Record last verified: 2025-03

Locations