HypertensionPeri-op HTNNCT03678207
The Effectiveness of a Preoperative Blood Pressure Screening Program to Identify Undiagnosed Hypertension in Ambulatory Surgery Patients
An observational study of Hypertension and Perioperative Hypertension, run by Hospital for Special Surgery, New York at 1 site in United States.
Trial summary
Elevated blood pressure is the largest contributing risk factor to all-cause and cardiovascular mortality. According to the U.S. Preventive Services Task Force, hypertension affects nearly 30% of the adult population. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Hypertension, Perioperative Hypertension
- What is being tested?
- Anesthesiologist phone call
- Type of treatment
- Pill or oral medicine
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- 20 Jun 2018to 19 Jun 2019
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients receiving elective ambulatory surgery with a preoperative blood pressure measurement greater than 160 (systolic) and/or 90 (diastolic)
Who may be able to join
- Patients undergoing elective ambulatory surgery
- Patients with a pre-operative elevated BP defined as greater than 160/90
- Patients above the age of 18
- English speaking
Who cannot join
- Patients with a pre-existing diagnosis of HTN
- Patients who are taking a hypertensive medication
- Patients who had a pre-operative surgical screening assessment
Trial locations and contacts
1 site in 1 country.
United States1 site
Hospital for Special Surgery
New York, New York, 10021
About this study
Elevated blood pressure is the largest contributing risk factor to all-cause and cardiovascular mortality. According to the U.S. Preventive Services Task Force, hypertension affects nearly 30% of the adult population. Many patients remain undiagnosed, despite the consensus that screening and timely diagnosis is paramount. In this study, 108 ambulatory surgery patients with elevated blood pressure (160/90) that are not yet formally diagnosed with hypertension will be enrolled and alerted of their high blood pressure by a co-investigator MD. They will request permission to follow-up with the patient and the patient's primary care provider 6 months after the initial phone call to check in on the status of their diagnosis and any action taken (lifestyle changes, medication) to alleviate their high blood pressure. Patients will receive a follow-up letter/email at 6 and 3 months to remind them of their potential diagnosis.
- Conditions
- Hypertension, Perioperative Hypertension
- Being tested
- Anesthesiologist phone call
- Medical subject headings
- Hypertension
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Anesthesiologist phone callOther
Patients receiving ambulatory surgery with no prior diagnosis of hypertension but have elevated blood pressure prior to surgery. Patients will receive a phone call from a participating anesthesiologist 1-3 days after surgery notifying them of their high blood pressure and obtaining oral consent to participate in the study. Patients will receive reminders via mail about following up with their PCP.
| Study group | Role | What they receive |
|---|---|---|
| Potential Undiagnosed HTN | Not described Receives: Other: Anesthesiologist phone call |
What is being measured
The primary outcome is the main question the study is designed to answer.
Diagnosis of hypertension 6 months after surgery
The number of patients with previously undiagnosed hypertension that have obtained a formal diagnosis of hypertension
Measured: 6 months postoperative
Secondary outcomes (2)
PCP follow up 6 months after surgery
Number of patients that followed-up with a primary care physician for further hypertension testing within 6 months of surgery
Measured: 6 months postoperative
Hypertension treatment 6 months after surgery
Number of patients that followed-up for their hypertension that received some sort of treatment, either medication or lifestyle
Measured: 6 months postoperative
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Sep 2018
- Study start20 Jun 2018
- Primary completion19 Jun 2019
- Study completion19 Jun 2019
Why it stopped: The investigator no longer desires to persue the trial. No enrollments were made.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HypertensionStudies of the same condition, open and under way.
- More trials run by Hospital for Special Surgery, New YorkThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hospital for Special Surgery, New York
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03678207
- Sponsor's protocol ID
- 2018-0914
- Acronym
- Peri-op HTN
- Status last verified
- Oct 2019
- First submitted
- 18 Sep 2018
- Last updated
- 12 Feb 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 12 Feb 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effectiveness of a Preoperative Blood Pressure Screening Program to Identify Undiagnosed Hypertension in Ambulatory Surgery Patients
- ClinicalTrials.gov ID
- NCT03678207
- Acronym / sponsor ID
- Peri-op HTN / 2018-0914
- Conditions
- Hypertension, Perioperative Hypertension
- Study type
- Observational
- Recruitment status
- WithdrawnReason stopped: The investigator no longer desires to persue the trial. No enrollments were made.
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Hospital for Special Surgery, New YorkUniversity, hospital or other
- Study start
- 20 Jun 2018 (actual)
- Primary completion
- 19 Jun 2019 (actual)
- Study completion
- 19 Jun 2019 (actual)
- First posted
- 19 Sep 2018 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Elevated blood pressure is the largest contributing risk factor to all-cause and cardiovascular mortality. According to the U.S. Preventive Services Task Force, hypertension affects nearly 30% of the adult population. Many patients remain undiagnosed, despite the consensus that screening and timely diagnosis is paramount. In this study, 108 ambulatory surgery patients with elevated blood pressure (160/90) that are not yet formally diagnosed with hypertension will be enrolled and alerted of their high blood pressure by a co-investigator MD. They will request permission to follow-up with the patient and the patient's primary care provider 6 months after the initial phone call to check in on the status of their diagnosis and any action taken (lifestyle changes, medication) to alleviate their high blood pressure. Patients will receive a follow-up letter/email at 6 and 3 months to remind them of their potential diagnosis.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Potential Undiagnosed HTN | – | Other: Anesthesiologist phone call |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients receiving elective ambulatory surgery with a preoperative blood pressure measurement greater than 160 (systolic) and/or 90 (diastolic)
Key inclusion criteria (4 listed)
- Patients undergoing elective ambulatory surgery
- Patients with a pre-operative elevated BP defined as greater than 160/90
- Patients above the age of 18
- English speaking
Key exclusion criteria (3 listed)
- Patients with a pre-existing diagnosis of HTN
- Patients who are taking a hypertensive medication
- Patients who had a pre-operative surgical screening assessment
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Anesthesiologist phone callPatients receiving ambulatory surgery with no prior diagnosis of hypertension but have elevated blood pressure prior to surgery. Patients will receive a phone call from a participating anesthesiologist 1-3 days after surgery notifying them of their high blood pressure and obtaining oral consent to participate in the study. Patients will receive reminders via mail about following up with their PCP. | Other | Potential Undiagnosed HTN |
Primary outcome
Diagnosis of hypertension 6 months after surgery
Time frame: 6 months postoperative
The number of patients with previously undiagnosed hypertension that have obtained a formal diagnosis of hypertension
2 secondary outcomes
PCP follow up 6 months after surgery
Time frame: 6 months postoperative
Hypertension treatment 6 months after surgery
Time frame: 6 months postoperative
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Feb 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Hypertension and Perioperative Hypertension, run by Hospital for Special Surgery, New York at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 12 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Diagnosis of hypertension 6 months after surgery (time frame: 6 months postoperative). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Feb 2026; AzTrials last refreshed its copy on 6 Nov 2026.