Condition category
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting

Plain English Summary

Not provided at time of registration

Trial website

Contact information



Primary contact

Ms Annette Smith


Contact details

Royal Sussex County Hospital
Eastern Road
United Kingdom

Additional identifiers

EudraCT number number

Protocol/serial number


Study information

Scientific title

Does haemodynamic optimisation, as guided by Oesophageal Doppler Monitoring, produce a greater reduction in complications and length of stay, if used intra-operatively, post-operatively or both?


Study hypothesis

1. Does haemodynamic optimisation, as guided by Oesophageal Doppler Monitoring (ODM), produce a greater reduction in complications and length of stay, if used intra-operatively, post-operatively or both?
2. Objective: To compare the use of ODM to guide fluid management and optimise haemodynamic status (maintaining blood/fluid volume within the bodies circulation and ensuring that the patients Blood Pressure and heart function is adequate to supply the other organs of the body), at different stages of the surgery:
2.1 During the operation
2.2 Immediately after the operation until the patient is weaned off the ventilator (breathing machine)
2.3 Combined during and immediately after the operation until weaned off the ventilator.
The 3 groups will be compared to see which gives the greatest reduction in the length of hospital stay, from the operation date to the day of discharge. ODM uses a silicone probe inserted into the oesophagus to monitor heart function. It does this by measuring the velocity of the blood flow in the descending aorta (the main artery from the heart supplying the body). The information obtained can be used to guide fluid management in critically ill patients or during major surgery, in combination to the routine measures used of Blood Pressure (BP) pulse, urine output and blood loss.

Ethics approval

Not provided at time of registration

Study design

Randomised pilot study

Primary study design


Secondary study design

Randomised controlled trial

Trial setting


Trial type


Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet


Surgery: Coronary artery bypass grafting (CABG)


This will be a pilot study that will investigate/compare fluid optimisation of adult patients at different stages of their surgical experience.

There will be three groups in the study:
1. Intra-operative fluid optimisation as guided by ODM.
2. Post-operative fluid optimisation as guided by ODM (until extubation/weaned off the ventilator).
3. Combined Intra and Post-operative fluid optimisation as guided by ODM (until extubation).

An internet and journal database search of literature on the used of ODM as a guide to fluid optimisation found that it reduces hospital stay and post-operative complications. Most of the studies used ODM during the operation. One (involving patients having heart surgery) used ODM immediately after the operation. Therefore it would appear valid to investigate which provides the best outcome in terms of reduced hospital stay or whether a greater benefit is obtained by a combination of the two.
The primary objective is to compare the three groups to see which one produces the best result in reducing length of hospital stay. The secondary objective is to compare post-operative complications, specifically that of post-operative nausea, arrhythmias and renal complications. Nausea or vomiting can be measured by the anti-emetics given on the drug chart or vomiting on the fluid chart. Arrhythmias will be measured by any arrhythmia that caused haemodynamic instability and to investigate renal complications the increase in the blood creatinine and urea from routine blood results will be analysed.

The Doppler probes will be inserted in theatre during surgery by a consultant anaesthetist. This will mean that the nursing staff will not be aware which group the participant is in. The participants in group one will receive standard post-operative care when they arrive in the Intensive Care Unit (ICU). All participants will receive standard post-operative care once they have been extubated. A flow chart will be used both during the operation and until extubation (depending which group the participant is in), to guide the fluid optimisation. All patients are continuously monitored for heart rate/rhythm, blood pressure and central venous pressure. This is recorded hourly on the Intensive Care charts. Fluid loss and urine output are also recorded and monitored closely. The addition of the ODM and its readings will be recorded on the same observation chart. Readings prior to and after fluid is given will be documented as will the type of fluid (blood or artificial plasma).

Intervention type



Not Specified

Drug names

Primary outcome measures

Not provided at time of registration

Secondary outcome measures

Not provided at time of registration

Overall trial start date


Overall trial end date


Reason abandoned


Participant inclusion criteria

Participants will be adult patients who are to undergo Coronary Artery Bypass Grafting (CABG) or valve surgery for the first time, both male and female. There will be a minimum of 21 participants in the pilot study. The small number is due to time constraints and the need for staff training. The participants will be randomly assigned to one of the three groups.

Participant type


Age group




Target number of participants


Participant exclusion criteria

Patients who have had previous surgery will not be considered as they are at increased risk of complications due to a number of factors.

Recruitment start date


Recruitment end date



Countries of recruitment

United Kingdom

Trial participating centre

Royal Sussex County Hospital
United Kingdom

Sponsor information


Record Provided by the NHSTCT Register - 2007 Update - Department of Health

Sponsor details

The Department of Health
Richmond House
79 Whitehall
United Kingdom
+44 (0)20 7307 2622

Sponsor type




Funder type


Funder name

Brighton and Sussex University Hospitals NHS Trust (UK)

Alternative name(s)

Funding Body Type

Funding Body Subtype


Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Results - basic reporting

Publication summary

Publication citations

Additional files

Editorial Notes