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Cardio-pulmonaryNCT03776292

Cardiopulmonary Changes Prolonged Surgical Abdominal Retractors Application in Supine Versus Lateral Position

An observational study of Cardio-pulmonary, run by Mansoura University at 1 site in Egypt.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Introduction: Dynamic and static compliance should be calculated as a routine part of ventilator monitoring. Dynamic and static compliance are 60-100 mL/cm H2O. A decrease in dynamic compliance without a change in the static compliance suggests an acute increase in airway resistance and can be assessed further by… Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Cardio-pulmonary
What is being tested?
monitoring
How many people
40 participants
Where
1 siteEgypt
Study dates
15 Dec 2018to 30 Mar 2019
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 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: -Patients admitted to the Urology Department, Mansoura Urology and Nephrology center, Faculty of medicine Mansoura University .

Who may be able to join

  • ASA I-II patients
  • both sexes
  • Age 18 - 65 year
  • surgical time ≥ 6hours for Orthotopic urinary bladder diversion surgery for cancer bladder patients and 3 hours for open surgical nephrectomy.

Who cannot join

  • Body mass index (BMI) greater than 35 kg. m-2.
  • Asthma requiring bronchodilator therapy.
  • Chronic Obstructive Pulmonary Disease, GOLD classification III and IV.
  • Severe pulmonary disease.
  • Hemodynamic instability (hypotension or tachycardia).
  • History of congestive heart failure or New York Heart Association (NYHA) functional class IV
Show all 19Show fewer
  • Right ventricular dysfunction.
  • Severe valvular heart disease.
  • Intra-cardiac shunts.
  • Intracranial hypertension.
  • Cardiac rhythm other than regular sinus.
  • Severe chronic kidney disease (glomerular filtration rate < 30 ml. min-1. 1.73 m2).
  • Liver cirrhosis (Child Pugh class B or C).
  • Pregnancy.
  • Previous thoracic surgery (lobectomy, bilobectomy, or pneumonectomy).
  • Lung metastatic surgery.
  • Previous receiving chemotherapy.
  • Emergency surgery.
  • Preoperative need for invasive mechanical ventilation.

Trial locations and contacts

1 site in 1 country.

Egypt1 site
  • Mansoura faculty of Medicine- Mansoura Urology and nephrology center

    Al Mansurah, Dakahlia Governorate, 35511

Other trials in Egypt

About this study

Official title: Cardiopulmonary Effects of Prolonged Surgical Abdominal Retractors Application in Supine Versus Lateral Position During General Anesthesia

Introduction: Dynamic and static compliance should be calculated as a routine part of ventilator monitoring. Dynamic and static compliance are 60-100 mL/cm H2O. A decrease in dynamic compliance without a change in the static compliance suggests an acute increase in airway resistance and can be assessed further by comparing peak pressure and plateau pressure. The normal gradient is approximately 10 cm H2O. A gradient >10 cm H2O may be secondary to endotracheal tube obstruction, mucous plugging, or bronchospasm. If volume is constant, acute changes in both dynamic and static compliance suggest a decrease in respiratory system compliance that may be caused by worsening increasing abdominal pressures. When static compliance is <25 mL/cm H2O, ventilator weaning may be difficult secondary to tachypnea during spontaneous breathing trials. (1) Aim of the work: to detect the cardiopulmonary burden of surgical ring retractors application during abdominal surgeries in supine versus lateral position (cancer bladder for supine position and open surgical nephrectomy for lateral position). Hypothesis: Abdominal retractors application would produce more cardiopulmonary instability during lateral position than during supine position for abdominal surgery. Patient \& Methods: This comparative prospective randomized study, will be done on ASA I-II patients, both sexes, Age 18 - 65 year, to compare pulmonary compliance and cardiac performance before, during and after surgical self-retaining abdominal retractors application patients will be divided into 2 groups; 1st group (S) will undergo orthotropic cancer bladder diversion and the 2nd group (L) both supine and lateral position for open surgical nephrectomy for lateral position.

Read the detailed description

Introduction: Dynamic and static compliance should be calculated as a routine part of ventilator monitoring. Dynamic and static compliance are 60-100 mL/cm H2O. A decrease in dynamic compliance without a change in the static compliance suggests an acute increase in airway resistance and can be assessed further by comparing peak pressure and plateau pressure. The normal gradient is approximately 10 cm H2O. A gradient >10 cm H2O may be secondary to endotracheal tube obstruction, mucous plugging, or bronchospasm. If volume is constant, acute changes in both dynamic and static compliance suggest a decrease in respiratory system compliance that may be caused by worsening increasing abdominal pressures. When static compliance is <25 mL/cm H2O, ventilator weaning may be difficult secondary to tachypnea during spontaneous breathing trials. (1) Aim of the work: to detect the cardiopulmonary burden of surgical ring retractors application during abdominal surgeries in supine versus lateral position (cancer bladder for supine position and open surgical nephrectomy for lateral position). Hypothesis: Abdominal retractors application would produce more cardiopulmonary instability during lateral position than during supine position for abdominal surgery. Patient \& Methods: This comparative prospective randomized study, will be done on ASA I-II patients, both sexes, Age 18 - 65 year, to compare pulmonary compliance and cardiac performance before, during and after surgical self-retaining abdominal retractors application patients will be divided into 2 groups; 1st group (S) will undergo orthotropic cancer bladder diversion and the 2nd group (L) both supine and lateral position for open surgical nephrectomy for lateral position. Study will be done at Mansoura University Hospital, during the year 2018, for 4 month duration, starting predected date=1-11-2018 actual study start date=15-12-2018[ NB. by mistake in the 1st registration i have regestered the study protocol predicted time of study start but actually the study started on 15-12-2018 thats why i changed the date more than one time ] till 30-3-2019 after approval of IRB (Institutional Review Board), Mansoura Faculty of Medicine. Primary outcome; composite 1ry outcome [1-Dynamic pulmonary compliance.2- Cardiac Index] during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups. Secondary outcome: Static lung compliance, Cardiac output, Stroke volume SV - stroke volume variability (SVV)-Cardiac performance index CPI, O2 delivery DIO2. Noninvasive Intraoperative hemodynamic (MBP, HR, O2 saturation)] during and after surgical ring retractor application compared to the same variable reading prior retractor application and in between both groups.

Being tested
monitoring
Keywords
cardiac, output, pulmonary, compliance, bladder, Retractor.
Medical subject headings
Patient Compliance

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • monitoringOther

    Primary outcome; composite 1ry outcome [1-Dynamic pulmonary compliance monitoring.2- Cardiac Index monitoring] during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups. Secondary outcome: Static lung compliance, Cardiac output, Stroke volume SV - stroke volume variability (SVV)-Cardiac performance index, O2 delivery DIO2. Noninvasive Intraoperative hemodynamic (MBP, HR, O2 saturation)] during and after surgical ring retractor application compared to the same variable reading prior retractor application and in between both groups.

Study groups in NCT03776292
Study groupRoleWhat they receive
supine position group= Group (S)1st group of 20 patients will undergo urinary bladder cystectomy and orthotopic urinary diversion lying supine with ring abdominal retractors
Receives: Other: monitoring
lateral position group = Group (L)2nd group of 20 patients will undergo surgical open nephrectomy lying lateral position with self retaining abdominal retractors
Receives: Other: monitoring

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. -non invasive Dynamic pulmonary compliance .

    dynamic pulmonary compliance during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: mean dynamic compliance at minutes 30,60,90,120,180,210 240 post retractor application compared to mean dynamic compliance at minutes 10,20,30,post endotracheal intubation(Basal Value preretractor application)

  2. Non invasive Cardiac Index

    Cardiac index monitoring during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: mean Non invasive Cardiac Index at minutes 30,60,90,120,180,210 240 post retractor application compared to mean Non invasive Cardiac Index at minutes 10,20,30,post endotracheal intubation(Basal Value preretractor application)

Secondary outcomes (10)
  1. Static lung compliance

    Static lung compliance during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  2. Cardiac output.

    Cardiac output. during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  3. Stroke volume SV

    Stroke volume SV. during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  4. - stroke volume variability (SVV)

    Stroke volume variability (SVV)during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  5. -Cardiac performance index CPI

    Cardiac performance index during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  6. Oxygen delivery DIO2

    Oxygen delivery DIO2 during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  7. . Noninvasive Intraoperative MBP

    Noninvasive Intraoperative MBP during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  8. HR

    HR during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  9. arterial O2 saturation(SaO2%)

    SaO2 saturation during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

  10. End tidal Co2 EtCO2

    End tidal Co2 EtCO2 during and after surgical retractor application compared to the same variables reading prior retractor application and in between both groups

    Measured: After endotracheal intubation recorded 3 times every 10 minutes -After Abdominal retractors application recorded every 30 minutes for 6 readings -After retractor removal 3 times every 10 minutes

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Dec 2018
  2. Study start15 Dec 2018
  3. Primary completion30 Mar 2019
  4. Study completion30 Mar 2019

Resources

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
Other
Time perspective
Prospective
Enrolment
40 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03776292
Sponsor's protocol ID
R.18.11.337
Status last verified
Jun 2019
First submitted
9 Dec 2018
Last updated
20 Jun 2019
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

An observational study of Cardio-pulmonary, run by Mansoura University at 1 site in Egypt.

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 4 inclusion and 19 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 20 Jun 2019. 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 Egypt. 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?

-non invasive Dynamic pulmonary compliance . (time frame: mean dynamic compliance at minutes 30,60,90,120,180,210 240 post retractor application compared to mean dynamic compliance at minutes 10,20,30,post endotracheal intubation(Basal Value preretractor application)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 20 Jun 2019; AzTrials last refreshed its copy on 6 Nov 2026.

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