ClinicalTrials.gg
Not yet recruitingNCT05827315IMPRoVEUpdated Apr 25, 2023

Incidence, Impact and Mechanisms of Perioperative Right VEntricular Dysfunction (IMPRoVE)

An observational study in Right Ventricular Dysfunction, sponsored by NHS National Waiting Times Centre Board. Not yet recruiting at 3 sites in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-04-25.

Sponsored by NHS National Waiting Times Centre Board · Observational

From the registry’s dates

  • Primary completion was expected by Apr 2026, 7 months ago, but the record still lists the study as not yet recruiting.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
175
Ages
18 Years and older
Sex
All
01

Study summary

A study to see how common right heart failure (right ventricular dysfunction) after major surgery is, and to investigate if right ventricular dysfunction causes worse patient outcomes after surgery.

Read the detailed description

Heart attacks are relatively rare around the time of surgery, however by measuring blood markers of heart injury, recent research has revealed that heart injury which otherwise may not be immediately obvious is common. Whilst this type of heart injury appears to be strongly linked to patient outcomes (complications, recovery and survival), the causes and potential treatments for it are not well understood.

Our research group has specialist knowledge about the right-hand side of the heart (right-heart) - the side that pumps blood through the lungs - which is less commonly considered or studied around the time of surgery. We have shown in previous studies using magnetic resonance imaging (MRI) scans (specialised whole-body scans which use a magnet rather than X-rays), evidence of right-heart function deteriorating after surgery. We want to test the idea that some of the blood marker evidence of heart injury reflects injury to the right-heart and more importantly that we can protect the right-heart around the time of surgery, reducing injury and improving patient outcomes.

We will examine these questions in the following ways:

  1. With patients' permission, we will perform detailed ultrasound scans of the heart (echocardiography), and blood measurement of injury markers in 175 patients undergoing different types of major surgery. This will allow us to assess how common heart injury is (visible on scans of both sides of the heart), whether it makes any difference to a patient's outcome and whether it explains the changes seen in blood markers.
  2. We will ask 50 of these patients to undergo MRI scans of the heart pre- and post-operatively to allow us to identify evidence of injury resulting from heart inflammation around the time of surgery. Inflammation is common following surgery and occurs throughout a patient's body - we believe heart inflammation may be responsible for postoperative heart injury.
  3. In 10 of these patients, we will seek to obtain blood samples from vessels flowing into the heart (easily obtained from a simple blood sample) and from veins flowing out of the heart, obtained by passing a fine tube into the heart via blood vessels in a patient's neck under X-ray guidance. This will allow us to examine what happens to immune cells as they pass through the heart (i.e., are they activated by heart inflammation?) and better understand the meaning of the changes seen on MRI scans.

This study will give us a better understanding of which patients are likely to suffer heart injury around the time of surgery and how this injury occurs. With this knowledge, future patients could receive personalised treatment plans aimed at preventing injury and improving outcomes. We are not testing any new treatments in this study.

02

Conditions studied

  • Right Ventricular Dysfunction

Keywords

  • Echocardiography
  • T1 CMR
  • Major non-cardiac surgery
  • Perioperative Complication
  • Postoperative myocardial injury
  • Right heart catheterisation
  • Coronary sinus sampling
03

In context

Ventricular Dysfunction, Right

90 studies on the registry are indexed under Ventricular Dysfunction, Right; 28 are open to participants now.

This study's planned enrollment of 175 is above the median of 100 across 51 observational studies indexed under Ventricular Dysfunction, Right.

Browse Ventricular Dysfunction, Right studies →

Lead sponsor

NHS National Waiting Times Centre Board is the lead sponsor of 19 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

175 patients of 18 years or older undergoing major non-cardiac surgery in the West of Scotland. Patients will be recruited from the Golden Jubilee National Hospital, Queen Elizabeth University Hospital, and Glasgow Royal Infirmary.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Main echocardiography study

Inclusion criteria

Inclusion Criteria:

  1. Provision of
  2. Age >18 years
  3. Planned elective primary hip or knee joint replacement under spinal anaesthesia, major colorectal, major vascular surgery or surgery requiring one lung ventilation with or without lung resection

Exclusion criteria

Exclusion Criteria:

  1. Pregnancy
  2. On-going participation in any research which could undermine the scientific basis of the study
  3. Previous major surgery within three months prior to recruitment
  4. Previous participation in the IMPRoVE study at any time
  5. Inadequate comprehension of English resulting in inability to comply with instructions while undergoing investigations required for main study and sub-studies.

Additional exclusion criteria applicable to the T1 CMR sub-study includes:

  1. Atrial fibrillation at baseline
  2. to cardiac magnetic resonance imaging (metal work in body etc)
  3. Contraindication to IV Gadolinium: acute or chronic renal failure, allergy to contrast
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
175 participants (estimated)
Patient registry
No

Groups and cohorts

  • Thoracic surgery cohort

    35 patients undergoing thoracic surgery with lung resection and one lung ventilation under primarily general anaesthesia.

    Diagnostic Test: Echocardiography · Diagnostic Test: T1 Cardiovascular Magnetic Resonance · Diagnostic Test: Right heart catheterisation and coronary sinus blood sampling

  • Upper gastrointestinal surgery cohort

    35 patients undergoing upper gastrointestinal surgery with one lung ventilation under primarily general anaesthesia.

    Diagnostic Test: Echocardiography · Diagnostic Test: T1 Cardiovascular Magnetic Resonance

  • Colorectal surgery cohort

    35 patients undergoing elective colorectal surgery under primarily general anaesthesia.

    Diagnostic Test: Echocardiography · Diagnostic Test: T1 Cardiovascular Magnetic Resonance

  • Vascular surgery cohort

    35 patients undergoing elective open abdominal aortic surgery under primarily general anaesthesia.

    Diagnostic Test: Echocardiography · Diagnostic Test: T1 Cardiovascular Magnetic Resonance

  • Orthopaedic surgery cohort

    35 patients undergoing elective primary hip or knee arthroplasty under spinal anaesthesia +/- sedation.

    Diagnostic Test: Echocardiography · Diagnostic Test: T1 Cardiovascular Magnetic Resonance

Interventions

  • Diagnostic testEchocardiography

    Echocardiography will be performed by BSE accredited echocardiographers in all 175 patients preoperatively and on day 2-4 postoperatively.

  • Diagnostic testT1 Cardiovascular Magnetic Resonance

    T1 CMR will be performed in 10 patients from each of the 5 surgical groups (50 patients in total) preoperatively and on day 2-4 postoperatively.

  • Diagnostic testRight heart catheterisation and coronary sinus blood sampling

    10 patients from the thoracic surgical group will undergo right heart catheterisation and coronary sinus blood sampling.

06

What researchers measure

Primary outcomes

  1. Incidence of postoperative Right ventricular dysfunction (RVD)

    RVD diagnosed by transthoracic echocardiography, defined as: * 2D-speckle tracking derived RV free wall peak longitudinal strain (FWLS) less negative than -20%. * Or, (where not available) two of Tricuspid Annular Plane Systolic Excursion (TAPSE) \<16mm, S' Wave velocity at the tricuspid annulus \<10cm/s or tissue doppler RV index of myocardial performance \>0.55

    Time frame: Echocardiography performed preoperatively and at day 2-4 postoperatively to measure change in RV function

  2. Days alive and at home at 30 days postoperatively (DAH30)

    DAH30 is a continuous number between 0 and 30 which reflects, out of the 30 days following surgery, the total number of those days that a patient spends alive and at home. If a patient dies within those 30 days, their value is set to 0. Data for DAH30 will be obtained by follow-up phone calls following the 30th postoperative day.

    Time frame: Day 30 postoperatively

Secondary outcomes

  1. Incidence of postoperative left ventricular dysfunction (LVD)

    LVD classified as mild, moderately or severely impaired, defined by 2D-echocardiography derived biplane LV ejection fraction and the presence of wall motion abnormalities.

    Time frame: Echocardiography performed preoperatively and at day 2-4 postoperatively to measure change in LV function

  2. Cardiac biomarkers

    Natriuretic peptides and high sensitivity troponin will be measured pre- and postoperatively.

    Time frame: BNP and troponin measured preoperatively, on postoperative days 1 and 2 and on day of postoperative echocardiography (occurring on postoperative days 2-4).

  3. Cardiovascular complications

    Incidence of myocardial infarction, cardiac death, non-fatal cardiac arrest, coronary revascularisation, pulmonary embolus, deep-veined thrombosis, or new onset atrial fibrillation, and major adverse cardiac events

    Time frame: Day of postoperative echocardiography (day 2-4 postoperatively) and at discharge (on average one week).

  4. Renal outcomes

    Kidney Disease Improving Global Outcome (KDIGO) classification of Acute Kidney Injury (AKI).

    Time frame: Day of postoperative echocardiography (day 2-4 postoperatively) and at discharge (on average one week).

  5. Pulmonary outcomes

    Atelectasis, pneumonia, acute respiratory distress syndrome or pulmonary aspiration

    Time frame: Day of postoperative echocardiography (day 2-4 postoperatively) and at discharge (on average one week).

  6. Infection Outcomes

    Fever and clinical suspicion of infection

    Time frame: Day of postoperative echocardiography (day 2-4 postoperatively) and at discharge (on average one week).

  7. Neurological outcomes

    Delirium and stroke

    Time frame: Day of postoperative echocardiography (day 2-4 postoperatively) and at discharge (on average one week).

  8. Sequential Organ Failure Assessment (SOFA) Score

    Score 0-24, where higher scores are a worse outcome.

    Time frame: Postoperative day 1,2, day of postoperative echocardiography in all patients. In patients admitted to HDU/ICU, SOFA score will be collected from postoperative day 0-7.

  9. Fifteen-point Quality of Recovery Score (QoR-15)

    Fifteen questions assessing the quality of a patients recovery, each question is scored 0-10 with higher scores indicating a worse outcome.

    Time frame: Pre-operatively and day of postoperative echocardiography (day 2-4 postoperatively).

  10. World Health Organisation Disability Assessment Schedule 2.0 (WHODAS 2.0)

    WHODAS 2.0 is a self administered questionnaire that assesses a patient's health and disability. Twelve questions are scored 0-4, where a higher score indicates a worse outcome.

    Time frame: Preoperatively, and at day 30, day 90, and one year postoperatively.

  11. EuroQoL Dimension Health Related Quality of Life Questionnaire (EQ-5D-5L)

    EQ-5D-5L is a self administered questionnaire that assesses 5 dimensions of a patient's quality of life. Each dimension is scored 1-5, where a higher score indicates a worse outcome.

    Time frame: Preoperatively, and at day 30, day 90, and one year postoperatively.

07

Study locations

3 sites
  • Golden Jubilee National Hospital
    Clydebank, United Kingdom
    • Ben Shelley · Contact0141 9515000
    • Ben Shelley · Principal investigator
  • Glasgow Royal Infirmary
    Glasgow, G4 0SF, United Kingdom
    • Rachel Kearns · Contact0141 211 4000
    • Rachel Kearns · Principal investigator
    • Sonya McKinlay · Principal investigator
  • Queen Elizabeth University Hospital
    Glasgow, G51 4TF, United Kingdom
    • Malcolm Watson · Contact
    • Malcolm Watson · Principal investigator
    • Indran Raju · Sub investigator
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 25, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05827315
Lead sponsor
NHS National Waiting Times Centre Board
Collaborators
University of Glasgow, NHS Greater Glasgow and Clyde, Royal London Hospital
Responsible party
Dr Ben Shelley (Honorary Professor/Consultant in Cardiothoracic Anaesthesia and Intensive Care, University of Glasgow) — Principal investigator
First posted
Apr 25, 2023
Start date
Apr 2023 (estimated)
Primary completion
Apr 2026 (estimated)
Completion
Apr 2026 (estimated)
Last update
Apr 25, 2023

Study contacts

Ben Shelley
Contact
Benjamin.Shelley@glasgow.ac.uk
0141 951 5000
Philip McCall
Contact
Philip.mccall@glasgow.ac.uk
0141 951 5000
Ben Shelley
principal investigator · National Waiting Times Centre Board

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Apr 2023. You cannot join it, but the record below documents what was studied.

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