ClinicalTrials.gg
Status unknownNCT03454633Updated Aug 6, 2018

A Comparative Study of Different Hypothermic Circulatory Arrest Strategies on Aortic Surgery.

An interventional study of the temperature of hypothermic circulatory arrest in Morality, Hypothermic Circulatory Arrest Time and Aortic-cross Clamping Time, sponsored by Xiaoping Fan. MD. Status unknown at 1 site in China. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2018-08-06.

Sponsored by Xiaoping Fan. MD · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Aug 2018), so the status shown — last known as Enrolling by invitation — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

By comparing the clinical outcome of patients underwent different hypothermic circulatory arrest (mild hypothermic versus moderate hypothermic) during aortic arch surgery, this study aims to determine the optimal hypothermic circulatory arrest strategy for aortic surgery.

Read the detailed description

Hypothermic circulatory arrest (HCA) is the cornerstone of aortic surgery. It provides a bloodless and still operative field. But the side effect of hypothermia also draws people's concern. With the development of surgical techniques and cardiopulmonary bypass (CPB) management, the temperature of HCA has been raised from deep hypothermia (14.1-20 degree) to moderate hypothermia (20.1-28 degree), and it has been a primary choice for many surgeons around the world. Some of surgeons still tried to push the limit and started using mild hypothermia (28.1-34 degree), and satisfactory outcome was obtained. However, the optimal temperature of HCA has not yet been determined.

In this randomized controlled study, 80 informed and consenting patients who are scheduled for total arch replacement with concomitant proximal aortic reconstruction will be randomized to mild (28.1-34 degree) or moderate (20.1-28 degree) hypothermia during circulatory arrest. Clinical outcomes of both groups will be analyzed to determine the optimal temperature for HCA.

02

Conditions studied

  • Morality
  • Hypothermic Circulatory Arrest Time
  • Aortic-cross Clamping Time
  • Cardiopulmonary Bypass Time
  • Operation Time
  • Re-Thoracotomy
  • ICU Stay
  • Mechanical Ventilation Time
  • Blood Transfusion
  • Neurological Disorder
  • Dialysis
  • Aneurysm
  • Endoleak
  • Hospital Stay

Keywords

  • Hyperthermic circulatory arrest; Surgery
03

In context

Nervous System Diseases

757 studies on the registry are indexed under Nervous System Diseases; 218 are open to participants now.

This study's planned enrollment of 80 is above the median of 55 across 495 interventional studies indexed under Nervous System Diseases.

Browse Nervous System Diseases studies →

Lead sponsor

This is the only study on the registry with Xiaoping Fan. MD as lead sponsor.

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

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

1.Patients with confirmed diagnosis (i.e.aortic dissection, marfan syndrome, aortic arch aneurysm and so on), which require total aortic arch replacement.

Exclusion criteria

Exclusion Criteria:

  1. Preoperative heart attack or coma.
  2. Patients with surgical , including but not limited to severe cardiac,pulmonary,renal or hepatic insufficiency.
  3. Pre-existing heart condition or neurological disease.
  4. Variation of aortic arch or its branch vessels.
  5. Patient is currently on anticoagulation therapy or has other medical condition that compromises the coagulation.
  6. Patient with active infection.
  7. Allergy to anaesthetic or contrast agent.
  8. Pregnant or lactating female.
  9. Patient is already on other medical trial.
  10. Other medical, psychological or socioeconomics condition determined by investigator that is not eligible for the study.
Terms in these criteria, in plain language(1)

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.

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

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
80 participants (estimated)

Study arms

  • Experimental
    Mild hypothermia

    Initiation of circulatory arrest using the cardiopulmonary bypass at temperature 28.1 - 34 degrees Celsius

    Procedure: the temperature of hypothermic circulatory arrest

  • Active comparator
    Moderate hypothermia

    Initiation of circulatory arrest using the cardiopulmonary bypass at temperature 20.1 - 28 degrees Celsius

    Procedure: the temperature of hypothermic circulatory arrest

Interventions

  • Procedurethe temperature of hypothermic circulatory arrest

    Different temperature (mild 30 degree or moderate 25 degree) employed during the hypothermic circulatory arrest on aortic surgery.

06

What researchers measure

Primary outcomes

  1. Mortality

    In-hospital Mortality or other related death

    Time frame: 3 months within surgery.

  2. Re-thoracotomy

    Postoperative bleeding or other conditions require re-thoracotomy

    Time frame: Through the hospitalization, an average of 4 weeks.

  3. Neurological disorder

    Any neurological event occur after surgery, including transient and permanent.

    Time frame: Through the hospitalization, an average of 4 weeks.

Secondary outcomes

  1. HCA time

    the time of hypothermic circulatory arrest

    Time frame: During the operation

  2. Aorta-cross clamp time

    the time of aortic-cross clamp

    Time frame: During the operation

  3. CPB time

    the time of cardiopulmonary bypass

    Time frame: During the operation

  4. Operation time

    the time of the entire surgery.

    Time frame: During the operation

  5. ICU stay

    the day of ICU treatment

    Time frame: Through the ICU stay, an average of 1 weeks.

  6. Time of mechanical ventilation

    the time of using respirator

    Time frame: Through the use of ventilation, an average of 3 days.

  7. Blood transfusion

    the number of blood product during the hospitalization, including red blood cell, platelet, plasma and so on.

    Time frame: Through the hospitalization, an average of 4 weeks.

  8. Dialysis

    postoperative renal failure requiring dialysis

    Time frame: Through the hospitalization, an average of 4 weeks.

  9. Hospital stay

    the time of hospitalization

    Time frame: Through the hospitalization, an average of 4 weeks.

  10. Postoperative aneurysm

    Aortic aneurysm develope after the surgery

    Time frame: 1 year within the surgery

  11. Postoperative endoleak

    Stent-graft endoleak occurs after the surgery.

    Time frame: 1 year within the surgery

07

Study locations

1 site
  • Guangdong General Hospital
    Guangzhou, Guangdong 510080, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Aug 2018 (actual). Primary completion is estimated for Feb 2020, 18 months after the start.

Of 167 non-industry interventional studies with no phase under Nervous System Diseases, half reached primary completion within 28 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 57. This study's planned 18 months is below that.

Counting every sponsor, half of 193 studies reached it within 30 months; a quarter within 11 and three quarters within 57.

Nervous System Diseases covers many different conditions, not one, so the studies compared here vary widely. Read these figures as a rough guide.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 25, 2018
First posted
Mar 6, 2018
StartActual
Aug 3, 2018
Primary completionEst.
Feb 15, 2020
CompletionEst.
Dec 15, 2020
Last update
Aug 6, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 6, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03454633
Lead sponsor
Xiaoping Fan. MD
Collaborators
Jie He.MD, Shihao Cai.MD, Wenda Gu.PhD, Haijiang Guo.PhD, Liang Hong. MD, Ruixing Fan.PhD, Jingsong Huang.PhD, Tucheng Sun.MD, Jihai Peng.MD
Responsible party
Xiaoping Fan. MD (Chief Physician, Guangdong Provincial People's Hospital) — Sponsor-investigator
First posted
Mar 6, 2018
Start date
Aug 3, 2018
Primary completion
Feb 15, 2020 (estimated)
Completion
Dec 15, 2020 (estimated)
Last update
Aug 6, 2018

Study contacts

Xiaoping Fan, PhD
study director · Guangdong General Hosiptal
Jie He, MD
principal investigator · Guangdong General Hosiptal

Oversight

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

Not currently enrolling

This study is status unknown, as verified in Aug 2018. You cannot join it, but the record below documents what was studied.

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