Blood PressureNCT06460233
Blood Pressure Changes After Bariatric Surgery
An observational study of Blood Pressure and Obesity, run by Medical University of Warsaw at 1 site in Poland.
Trial summary
The aim of the study is to assess changes in blood pressure, cardiac function and selected laboratory measurements after bariatric surgery and to find most important factors associated with blood pressure reduction after weight loss. Read more about this study
- Who is it for?
- Ages 18 to 70 years
- Conditions the study is for
- Blood Pressure, Obesity, Bariatric Surgery
- What is being tested?
- Bariatric surgery - sleeve gastrectomy
- Type of treatment
- Surgery or procedure
- How many people
- 60 participants
- Where
- 1 sitePoland
- Study dates
- 21 Sep 2021to 15 Jun 2025
- 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 to 70 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: The study includes all consecutive patients with class III obesity or class II obesity with comorbidities, admitted for bariatric surgery (sleeve gastrectomy) to the Departement of General, Transplant and Liver Surgery, Medical University of Warsaw
Who may be able to join
- BMI ≥40kg/m2 or ≥35 kg/m2 with comorbidities
Who cannot join
- Lack of informed consent
- Expected lack of compliance
- Psychiatric illness
- Previous bariatric surgery
- Severe gastroesophageal reflux disease
- Active neoplastic disease
- Pregnancy
- Chronic atrial fibrillation or other persistent arrhythmia
Trial locations and contacts
1 site in 1 country.
Poland1 site
Central Warsaw Medical University Teaching Hospital
Warsaw, Masovian Voivodeship, 02-097
About this study
Official title: Dynamics of Blood Pressure Changes After Bariatric Surgery, Assessed With 24-h Blood Pressure Monitoring
The aim of the study is to assess changes in blood pressure, cardiac function and selected laboratory measurements after bariatric surgery and to find most important factors associated with blood pressure reduction after weight loss.
Description of the study
Patients: consecutive patients with class III obesity (BMI ≥ 40kg/m2) or class II obesity (BMI 35-40kg/m2) with comorbidities, admitted for sleeve gastrectomy
Methods: bedside and 24-hour blood pressure measurement, cardiac ultrasound and laboratory tests performed before surgery and at 1 week, 4 weeks, 6 months and 12 months after bariatric surgery
Read the detailed description
Pathogenesis of blood pressure reduction associated with weight loss is not established. We hypothesize that monitoring of blood pressure changes after weight loss, with concomitant evaluation of cardiac output and selected biochemical parameters related to blood pressure regulation may help in the understanding of weight loss-associated decrease in blood pressure.
The study protocol include measurement of blood pressure (bedside and 24h blood pressure monitoring), assessment of the cardiac function and biochemistry 1-2 days before laparoscopic sleeve gastrectomy and at the time of routine surgical follow-up visits after surgery ie. one week, one month, six and twelve months. Blood pressure measurements will be performed using automatic oscillometric monitors (OnTrak , Spacelabs,USA). Cardiac evaluation will include an echocardiographic assessment of the systolic and diastolic left ventricular function as well as cardiac output measurement using Doppler method. Biochemistry measures, in addition to routine blood tests needed for surgical follow-up, will include fasting insulin, high sensivity C-reactive protein, cystatin C, and NT-proBNP.
- Conditions
- Blood Pressure, Obesity, Bariatric Surgery, Hypertension
- Being tested
- Bariatric surgery - sleeve gastrectomy
- Keywords
- Hypertension, Obesity, Bariatric surgery
- Medical subject headings
- Obesity, Hypertension
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Bariatric surgery - sleeve gastrectomyProcedure or surgery
Laparoscopic sleeve gastrectomy performed according to the current surgical standards
| Study group | Role | What they receive |
|---|---|---|
| Patients with class III obesity (BMI ≥ 40) or class II obesity (BMI 35-40) with comorbidities | Consecutive patients with class III obesity (BMI ≥ 40kg/m2) or class II obesity (BMI 35-40kg/m2) with comorbidities admitted for bariatric surgery (sleeve gastrectomy) Receives: Procedure: Bariatric surgery - sleeve gastrectomy |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change from baseline in the 24-hour blood pressure at one week after bariatric surgery (sleeve gastrectomy)
Mean systolic and diastolic blood pressure in mmHg, measured using 24 hour ambulatory blood pressure monitor
Measured: 1-2 days before and 7 to 10 days after surgery
Secondary outcomes (35)
Change from baseline in the 24-hour blood pressure at one month after bariatric surgery (sleeve gastrectomy)
Mean systolic and diastolic blood pressure in mmHg, measured using 24 hour ambulatory blood pressure monitor
Measured: 1-2 days before and 28 to 31 days after surgery
Change from baseline in the 24-hour blood pressure at six months after bariatric surgery (sleeve gastrectomy)
Mean systolic and diastolic blood pressure in mmHg, measured using 24 hour ambulatory blood pressure monitor
Measured: 1-2 days before and 5 to 7 months after surgery
Change from baseline in the 24-hour blood pressure at one year after bariatric surgery (sleeve gastrectomy)
Mean systolic and diastolic blood pressure in mmHg measured using 24 hour ambulatory blood pressure monitor
Measured: 1-2 days before and 11 to 13 months after surgery
Change from baseline in bedside blood pressure at one week after bariatric surgery
Systolic and diastolic blood pressure in mmHg, averaged from two measurements using automatic blood pressure monitor, performed in supine position at the end of echocardiographic study
Measured: 1-2 days before and 7 to 10 days after surgery
Change from baseline in bedside blood pressure at one month after bariatric surgery
Systolic and diastolic blood pressure in mmHg, averaged from two measurements using automatic blood pressure monitor, performed in supine position at the end of echocardiographic study
Measured: 1-2 days before and 28 to 31 days after surgery
Change from baseline in bedside blood pressure at six months after bariatric surgery
Systolic and diastolic blood pressure in mmHg, averaged from two measurements using automatic blood pressure monitor, performed in supine position at the end of echocardiographic study
Measured: 1-2 days before and 5 to 7 months after surgery
Change from baseline in bedside blood pressure at one year after bariatric surgery
Systolic and diastolic blood pressure in mmHg, averaged from two measurements using automatic blood pressure monitor, performed in supine position at the end of echocardiographic study
Measured: 1-2 days before and 11 to 13 months after surgery
Change from baseline in cardiac output at one week after bariatric surgery
Echocardiographic measurement of cardiac output in liters per minute using Doppler method
Measured: 1-2 days before and 7 to 10 days after surgery
Change from baseline in cardiac output at one month after bariatric surgery
Echocardiographic measurement of cardiac output in liters per minute using Doppler method
Measured: 1-2 days before and 28 to 31 days after surgery
Change from baseline in cardiac output at six months after bariatric surgery
Echocardiographic measurement of cardiac output in liters per minute using Doppler method
Measured: 1-2 days before and 5 to 7 months after surgery
Change from baseline in cardiac output at one year after bariatric surgery
Echocardiographic measurement of cardiac output in liters per minute using Doppler method
Measured: 1-2 days before and 11 to 13 months after surgery
Change from baseline in the left ventricular systolic function at one week after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak systolic velocities in meters per second, using tissue Doppler method
Measured: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in the left ventricular systolic function at one month after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak systolic velocities in meters per second, using tissue Doppler method
Measured: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in the left ventricular systolic function at six months after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak systolic velocities in meters per second, using tissue Doppler method
Measured: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in the left ventricular systolic function at one year after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak systolic velocities in meters per second, using tissue Doppler method
Measured: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in the left ventricular diastolic function at one week after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak early diastolic velocities in meters per second, using tissue Doppler method, and of the early and late mitral inflow peak velocities in meters per second, using pulse wave Doppler method
Measured: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in the left ventricular diastolic function at one month after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak early diastolic velocities in meters per second, using tissue Doppler method, and of the early and late mitral inflow peak velocities in meters per second, using pulse wave Doppler method
Measured: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in the left ventricular diastolic function at six months after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak early diastolic velocities in meters per second, using tissue Doppler method, and of the early and late mitral inflow peak velocities in meters per second, using pulse wave Doppler method
Measured: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in the left ventricular diastolic function at one year after bariatric surgery
Echocardiographic measurement of the lateral and medial mitral annulus peak early diastolic velocities in meters per second, using tissue Doppler method, and of the early and late mitral inflow peak velocities in meters per second, using pulse wave Doppler method
Measured: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum fasting insulin level at one week after bariatric surgery
Laboratory measurement of serum fasting insulin level in µIU/ml
Measured: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum fasting insulin level at one month after bariatric surgery
Laboratory measurement of serum fasting insulin level in µIU/ml
Measured: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum fasting insulin level at six months after bariatric surgery
Laboratory measurement of serum fasting insulin level in µIU/ml
Measured: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum fasting insulin level at one year after bariatric surgery
Laboratory measurement of serum fasting insulin level in µIU/ml
Measured: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at one week after bariatric surgery
Laboratory measurement of serum high- sensivity C-Reactive Protein level in mg/l
Measured: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at one month after bariatric surgery
Laboratory measurement of serum high- sensivity C-Reactive Protein level in mg/l
Measured: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at six months after bariatric surgery
Laboratory measurement of serum high- sensivity C-Reactive Protein level in mg/l
Measured: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at one year after bariatric surgery
Laboratory measurement of serum high- sensivity C-Reactive Protein level in mg/l
Measured: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum Cystatin C level at one week after bariatric surgery
Laboratory measurement of serum Cystatin C level in mg/l
Measured: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum Cystatin C level at one month after bariatric surgery
Laboratory measurement of serum Cystatin C level in mg/l
Measured: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum Cystatin C level at six months after bariatric surgery
Laboratory measurement of serum Cystatin C level in mg/l
Measured: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum Cystatin C level at one year after bariatric surgery
Laboratory measurement of serum Cystatin C level in mg/l
Measured: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum NT-proBNP level at one week after bariatric surgery
Laboratory measurement of serum NT-proBNP level in pg/ml
Measured: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum NT-proBNP level at one month after bariatric surgery
Laboratory measurement of serum NT-proBNP level in pg/ml
Measured: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum NT-proBNP level at six months after bariatric surgery
Laboratory measurement of serum NT-proBNP level in pg/ml
Measured: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum NT-proBNP level at one year after bariatric surgery
Laboratory measurement of serum NT-proBNP level in pg/ml
Measured: 1-2 days before and 11 to 13 months after bariatric surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Jun 2024
- Study start21 Sep 2021
- Primary completion15 Jun 2025
- Study completion15 Jun 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Blood PressureStudies of the same condition, open and under way.
- More trials run by Medical University of WarsawThe 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
- 60 participants (actual)
Sponsor and investigators
- Lead sponsor
- Medical University of Warsaw
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Grzegorz Styczyński, Medical University of Warsaw
- Investigators
- Grzegorz Styczynski, MD, PhD, Principal investigator, Medical University of Warsaw
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06460233
- Sponsor's protocol ID
- KB/173/2020
- Status last verified
- Jul 2025
- First submitted
- 24 May 2024
- Last updated
- 18 Jul 2025
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: All anonymized patient's data collected during the study will be shared with other researchers who provide methodologically sound proposal
Publications
Styczynski G, Kalinowski P, Cienszkowska K, Ludwiczak M, Strzelczyk J, Szmigielski C. The early impact of bariatric surgery on blood pressure: A hemodynamic analysis using echocardiography in a prospective observational cohort study. Hypertens Res. 2026 May;49(5):1695-1706. doi: 10.1038/s41440-026-02602-y. Epub 2026 Mar 25.
PubMed 41882327
Study at a glance
From the registry record, last updated by the sponsor on 18 Jul 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Dynamics of Blood Pressure Changes After Bariatric Surgery, Assessed With 24-h Blood Pressure Monitoring
- ClinicalTrials.gov ID
- NCT06460233
- Acronym / sponsor ID
- KB/173/2020
- Conditions
- Blood Pressure, Obesity, Bariatric Surgery, Hypertension
- Keywords
- Hypertension, Obesity, Bariatric surgery
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Medical University of WarsawUniversity, hospital or other
- Study start
- 21 Sep 2021 (actual)
- Primary completion
- 15 Jun 2025 (actual)
- Study completion
- 15 Jun 2025 (actual)
- First posted
- 14 Jun 2024 (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.
The aim of the study is to assess changes in blood pressure, cardiac function and selected laboratory measurements after bariatric surgery and to find most important factors associated with blood pressure reduction after weight loss.
Description of the study
Patients: consecutive patients with class III obesity (BMI ≥ 40kg/m2) or class II obesity (BMI 35-40kg/m2) with comorbidities, admitted for sleeve gastrectomy
Methods: bedside and 24-hour blood pressure measurement, cardiac ultrasound and laboratory tests performed before surgery and at 1 week, 4 weeks, 6 months and 12 months after bariatric surgery
Detailed description
Pathogenesis of blood pressure reduction associated with weight loss is not established. We hypothesize that monitoring of blood pressure changes after weight loss, with concomitant evaluation of cardiac output and selected biochemical parameters related to blood pressure regulation may help in the understanding of weight loss-associated decrease in blood pressure.
The study protocol include measurement of blood pressure (bedside and 24h blood pressure monitoring), assessment of the cardiac function and biochemistry 1-2 days before laparoscopic sleeve gastrectomy and at the time of routine surgical follow-up visits after surgery ie. one week, one month, six and twelve months. Blood pressure measurements will be performed using automatic oscillometric monitors (OnTrak , Spacelabs,USA). Cardiac evaluation will include an echocardiographic assessment of the systolic and diastolic left ventricular function as well as cardiac output measurement using Doppler method. Biochemistry measures, in addition to routine blood tests needed for surgical follow-up, will include fasting insulin, high sensivity C-reactive protein, cystatin C, and NT-proBNP.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Patients with class III obesity (BMI ≥ 40) or class II obesity (BMI 35-40) with comorbidities | – | Procedure: Bariatric surgery - sleeve gastrectomyConsecutive patients with class III obesity (BMI ≥ 40kg/m2) or class II obesity (BMI 35-40kg/m2) with comorbidities admitted for bariatric surgery (sleeve gastrectomy) |
Who may qualify
- Ages
- 18 to 70 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- The study includes all consecutive patients with class III obesity or class II obesity with comorbidities, admitted for bariatric surgery (sleeve gastrectomy) to the Departement of General, Transplant and Liver Surgery, Medical University of Warsaw
Key inclusion criteria (1 listed)
- BMI ≥40kg/m2 or ≥35 kg/m2 with comorbidities
Key exclusion criteria (8 listed)
- Lack of informed consent
- Expected lack of compliance
- Psychiatric illness
- Previous bariatric surgery
- Severe gastroesophageal reflux disease
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 |
|---|---|---|
| Bariatric surgery - sleeve gastrectomyLaparoscopic sleeve gastrectomy performed according to the current surgical standards | Procedure or surgery | Patients with class III obesity (BMI ≥ 40) or class II obesity (BMI 35-40) with comorbidities |
Primary outcome
Change from baseline in the 24-hour blood pressure at one week after bariatric surgery (sleeve gastrectomy)
Time frame: 1-2 days before and 7 to 10 days after surgery
Mean systolic and diastolic blood pressure in mmHg, measured using 24 hour ambulatory blood pressure monitor
35 secondary outcomes
Change from baseline in the 24-hour blood pressure at one month after bariatric surgery (sleeve gastrectomy)
Time frame: 1-2 days before and 28 to 31 days after surgery
Change from baseline in the 24-hour blood pressure at six months after bariatric surgery (sleeve gastrectomy)
Time frame: 1-2 days before and 5 to 7 months after surgery
Change from baseline in the 24-hour blood pressure at one year after bariatric surgery (sleeve gastrectomy)
Time frame: 1-2 days before and 11 to 13 months after surgery
Change from baseline in bedside blood pressure at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after surgery
Change from baseline in bedside blood pressure at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after surgery
Change from baseline in bedside blood pressure at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after surgery
Change from baseline in bedside blood pressure at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after surgery
Change from baseline in cardiac output at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after surgery
Change from baseline in cardiac output at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after surgery
Change from baseline in cardiac output at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after surgery
Change from baseline in cardiac output at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after surgery
Change from baseline in the left ventricular systolic function at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in the left ventricular systolic function at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in the left ventricular systolic function at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in the left ventricular systolic function at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in the left ventricular diastolic function at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in the left ventricular diastolic function at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in the left ventricular diastolic function at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in the left ventricular diastolic function at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum fasting insulin level at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum fasting insulin level at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum fasting insulin level at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum fasting insulin level at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum high- sensivity C-Reactive Protein level at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum Cystatin C level at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum Cystatin C level at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum Cystatin C level at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum Cystatin C level at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after bariatric surgery
Change from baseline in serum NT-proBNP level at one week after bariatric surgery
Time frame: 1-2 days before and 7 to 10 days after bariatric surgery
Change from baseline in serum NT-proBNP level at one month after bariatric surgery
Time frame: 1-2 days before and 28 to 31 days after bariatric surgery
Change from baseline in serum NT-proBNP level at six months after bariatric surgery
Time frame: 1-2 days before and 5 to 7 months after bariatric surgery
Change from baseline in serum NT-proBNP level at one year after bariatric surgery
Time frame: 1-2 days before and 11 to 13 months after bariatric surgery
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Jul 2025.
- Derived from this study: PubMed 41882327Styczynski G, Kalinowski P, Cienszkowska K, Ludwiczak M, Strzelczyk J, Szmigielski C. The early impact of bariatric surgery on blood pressure: A hemodynamic analysis using echocardiography in a prospective observational cohort study. Hypertens Res. 2026 May;49(5):1695-1706. doi: 10.1038/s41440-026-02602-y. Epub 2026 Mar 25.
- Individual participant dataSharing planned: Yes. All anonymized patient's data collected during the study will be shared with other researchers who provide methodologically sound proposal
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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.
Grzegorz Styczynski, MD, PhD principal investigator
Medical University of Warsaw
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 Blood Pressure and Obesity, run by Medical University of Warsaw at 1 site in Poland.
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 1 inclusion and 8 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: finished, as of the sponsor's last update on 18 Jul 2025. 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 Poland. 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 is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Change from baseline in the 24-hour blood pressure at one week after bariatric surgery (sleeve gastrectomy) (time frame: 1-2 days before and 7 to 10 days after surgery). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06460233, which also lists 1 linked publication.
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 18 Jul 2025.