Cardiopulmonary Exercise Testing and Preoperative Risk Stratification (CPX or CPEX)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified June 2009 by University College London Hospitals.
Recruitment status was  Recruiting
Sponsor:
Collaborators:
University College, London
National Institute for Health Research, United Kingdom
Information provided by:
University College London Hospitals
ClinicalTrials.gov Identifier:
NCT00737828
First received: August 18, 2008
Last updated: July 13, 2010
Last verified: June 2009
  Purpose

The investigators would like to evaluate the use of cardiopulmonary exercise tests (CPX) in guiding the care pathway of patients undergoing colorectal operations. In the intervention group care will be guided by CPX results and in the control group care will be guided by the doctors assessment. The investigators would like to assess the impact of this on patient outcome, patient satisfaction and resource usage. As a secondary goal we would also like to assess whether a pre-operative blood test of a heart hormone called B type natriuretic peptide (BNP) can predict heart damage after major surgery.


Condition Intervention
Colorectal Surgery
Critical Illness
Other: Perioperative care pathway guided by CPX results
Other: Clinician guided care

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Randomised Controlled Trial of the Utility of Cardiopulmonary Exercise (CPX) Testing for Preoperative Risk Stratification to Guide Perioperative Care and Thereby Reduce Postoperative Morbidity

Resource links provided by NLM:


Further study details as provided by University College London Hospitals:

Primary Outcome Measures:
  • Postoperative morbidity (presence or absence of POMS defined morbidity) [ Time Frame: Day 5 ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Post operative morbidity domains e.g. gastrointestinal, renal, pulmonary [ Time Frame: Day 5 ] [ Designated as safety issue: No ]
  • Total postoperative ITU bed utilisation [ Time Frame: End of hospital stay i.e. day of hospital discharge ] [ Designated as safety issue: No ]
  • Total postoperative bed utilisation [ Time Frame: End of hospital stay i.e. day of hospital discharge ] [ Designated as safety issue: No ]
  • ITU re-admission [ Time Frame: End of hospital stay i.e. day of hospital discharge ] [ Designated as safety issue: No ]
  • Death [ Time Frame: Should death occur ] [ Designated as safety issue: No ]
  • SF36 (compared with SF36 at baseline) [ Time Frame: 12 months post day of surgery ] [ Designated as safety issue: No ]

Estimated Enrollment: 228
Study Start Date: August 2008
Estimated Primary Completion Date: May 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: A
Control - Standard Perioperative Pathway
Other: Clinician guided care
Best current practice for choosing postoperative care environment
Experimental: B
Intervention - Perioperative care pathway guided by CPX Results i.e.anaerobic threshold & ventilatory equivalents
Other: Perioperative care pathway guided by CPX results
  • AT > 11ml/min/kg no myocardial ischaemia or Ve/VO2 <35 - Level 1 Ward Care
  • AT > 11ml/min/kg with myocardial ischaemia or Ve/VO2 >35 - Level 2 (HDU) Critical Care Unit
  • AT < 11ml/min/kg - Level 3 (ITU) Critical Care Unit
  • AT <8mls/min/kg - Level 3 (ITU) Critical Care Unit/ consider cancellation or alternative procedure

Detailed Description:

Each year 20000 UK patients die within 30 days of surgery. It seems that in the UK a patient's chances of becoming seriously unwell or dying following surgery is higher than in comparable countries. Fewer beds in the UK are given over to Intensive Care than in these other countries. Closer attention to the care given after operations, which can be achieved on intensive care units (ICU), almost certainly reduces the chances of serious illness following major surgery. An increase in the number of intensive care unit beds in the UK is extremely unlikely. Better use of the available intensive care beds could be achieved by allocating them where they are believed to improve outcome (following surgery) and by allocating them to patients most likely to benefit.

Tests used to assess risk of surgery to patients are largely ineffective. Cardiopulmonary exercise tests (CPX) seem to be effective at identifying patients at risk of death or serious illness post surgery. This information has been used in studies to select patients for ICU beds and reduce deaths. The studies so far have limitations in their design and scope which means we can't be certain this approach works in the UK.

We suggest a study to answer this question more conclusively and more specifically in UK patients. We will randomly divide patients between two groups. In the 1st group choice of postoperative care environment is based on best current practice and in the other group we will make these decisions (critical care or ward) based on the results of the CPX.

We hope that the benefits will include less patients becoming seriously ill or dying and shorter stays in hospital after surgery following major operations. We also hope the information will help patients understand the risks of their operation better and therefore make better informed decisions. This may also reduce the overall cost of surgery for hospitals.

As a secondary goal we would also like to assess whether a pre-operative blood test of a heart hormone called B type natriuretic peptide (BNP) can predict heart damage after major surgery.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Adults ≥ 18 years age
  2. Males
  3. Females
  4. Listed for elective(non-emergency) colorectal surgery

Exclusion Criteria:

  1. Age < 18 years age
  2. Patient unwilling/unable to consent
  3. Adults with learning disabilities or dementia
  4. Prisoners
  5. Any contraindication to cardiopulmonary exercise testing (as outlined by *American Association of Anaesthesia:

    • Acute MI (3-5 days)
    • Unstable angina
    • Uncontrolled arrhythmias
    • Syncope
    • Acute endocarditis
    • Acute myocarditis
    • Acute pericarditis
    • Symptomatic severe aortic stenosis
    • Uncontrolled heart failure
    • Acute pulmonary embolism or infarction
    • Thrombosis of lower extremities
    • Dissecting aneurysm
    • Uncontrolled asthma
    • Pulmonary oedema
    • Room air desaturation at rest <85%
    • Respiratory failure
    • Acute non-cardiopulmonary disorder that may affect exercise performance or be aggravated by exercise Mental impairment leading to inability to co-operate
  6. Patients already enrolled in an interventional study
  7. Previous CPX test result recorded in the medical notes
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00737828

Contacts
Contact: Michael PW Grocott +44 207 288 3887 mike.grocott@ucl.ac.uk
Contact: Paula M Meale +44 207 288 3887 rmhapmm@ucl.ac.uk

Locations
United Kingdom
University College London Hospitals NHS Foundation Trust Not yet recruiting
London, United Kingdom, NW1 2BU
Contact: Jim Down    +44 7980079588    jim.down@uclh.nhs.uk   
Contact: Paula Meale    +44 207 288 3887    rmhapmm@ucl.ac.uk   
Whittington Hospital NHS Trust Recruiting
London, United Kingdom, N19 5NF
Contact: Martin B Kuper    +44 207 288 3887    martin.kuper@whittington.nhs.uk   
Contact: Paula M Meale    +44 207 288 3887    rmhapmm@ucl.ac.uk   
Sponsors and Collaborators
University College London Hospitals
University College, London
National Institute for Health Research, United Kingdom
Investigators
Study Director: Michael PW Grocott University College, London
Principal Investigator: Paula Meale University College, London
Principal Investigator: Michael Mythen University College, London
Principal Investigator: Ayo Oshowo Whittington Hospital NHS Trust
Principal Investigator: Mervyn Singer University College, London
Principal Investigator: Geoff Bellingan University College London Hospitals NHS Foundation Trust
Principal Investigator: Kay Mitchell University College, London
Principal Investigator: Hasan Muktar The Whittington Hospital Hospital NHS Trust
Principal Investigator: Alistair Windsor University College London Hospitals NHS Foundation Trust
Principal Investigator: Jim Down University College London Hospitals NHS Foundation Trust
Principal Investigator: Martin B Kuper Whittington Hospital NHS Trust
Principal Investigator: Denny ZH Levett University College, London
Principal Investigator: James Pate University College, London
Principal Investigator: Phil Hennis, PhD UCL
Principal Investigator: Alasdair O'Doherty, MSc UCL
Principal Investigator: Alec Engledow UCLH
Principal Investigator: Aundrea Mulreany Whittington Hospital
Principal Investigator: Zoe Broadhead UCLH
Principal Investigator: Carmel Young UCLH
  More Information

No publications provided

Responsible Party: Patricia Martinez (Sponsors Representative), University College London
ClinicalTrials.gov Identifier: NCT00737828     History of Changes
Other Study ID Numbers: 07/0114, NHNN REC NO: 07/H0716/55, NIHR: PB-PG-0906-11426
Study First Received: August 18, 2008
Last Updated: July 13, 2010
Health Authority: United Kingdom: Research Ethics Committee

Keywords provided by University College London Hospitals:
Cardiopulmonary exercise test
CPX
CPEX
surgical outcome
colorectal surgery
risk stratification

Additional relevant MeSH terms:
Critical Illness
Disease Attributes
Pathologic Processes

ClinicalTrials.gov processed this record on April 16, 2014