Acute Kidney InjuryNCT05222074
Effect of CVP and IOH on AKI and AKD
An observational study of Acute Kidney Injury and Acute Kidney Disease, run by Nanjing First Hospital, Nanjing Medical University at 1 site in China.
Trial summary
This study was aimed to explore the effect of intraoperative venous congestion and intraoperative hypotension (IOH) on acute adverse kidney events, defined as acute kidney injury (AKI) and acute kidney disease (AKD), after cardiac surgery Read more about this study
- Who is it for?
- Ages 18 to 90 years
- Conditions the study is for
- Acute Kidney Injury, Acute Kidney Disease
- What is being tested?
- Venous congestion and Introperation hypotension
- How many people
- 5,127 participants
- Where
- 1 siteChina
- Study dates
- 1 Jun 2016to 1 Aug 2021
- 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 90 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: All adults undergoing cardiac surgery between 2016 and 2020 (data analysed in 2021) using electronic health records collected from the Nanjing First Hospital.
Who may be able to join
- Patients aged 18 years and older,
- Patients underwent cardiac surgery (coronary artery bypass grafting, heart valve surgery, heart transplant or surgical excision of intracardiac myxoma)
- Patients receiving invasive intraoperative BP monitoring during surgery
- Patients underwent cardiopulmonary bypass (CPB) during surgery
Who cannot join
- Pre-existing renal insufficiency defined by presence of abnormal preoperative serum creatinine ≥ 133 μmol/L and/or preoperative diagnosis of renal insufficiency within 6 months'preoperative period.
- Patients with preoperative dialysis dependence within 60 days before the index surgical procedure,
- Surgical duration less than 30 minutes
- Surgery on the aorta
- Insufficient hemodynamic and laboratory data for outcomes and/or exposure ascertainment
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Venous Congestion Rather Than Intraoperative Hypotension is Associated With Acute Adverse Kidney Events After Cardiac Surgery
This study was aimed to explore the effect of intraoperative venous congestion and intraoperative hypotension (IOH) on acute adverse kidney events, defined as acute kidney injury (AKI) and acute kidney disease (AKD), after cardiac surgery
Read the detailed description
Venous congestion and IOH were primary exposures and quantified as area under the curve (AUC) of central venous pressure ≥12, 16 or 20 mmHg or mean arterial pressure ≤55, 65, 75 mmHg. The primary outcome was AKI or AKD defined as renal dysfunction persisting > 7 days after surgery. Multivariable logistic regression and Cox proportional hazard models were used to determine the association between intraoperative venous congestion/hypotension and postoperative acute adverse kidney events, respectively, adjusted for relevant confounding factors and multiple comparisons.
- Conditions
- Acute Kidney Injury, Acute Kidney Disease
- Being tested
- Venous congestion, Introperation hypotension
- Keywords
- Acute kidney injury, Intraoperative hypotension, Central venous pressure, Acute kidney disease, Cardiopulmonary bypass
- Medical subject headings
- Acute Kidney Injury
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Venous congestionOther
Venous congestion exposures were quantified as area under the curve (AUC) of central venous pressure ≥12, 16 or 20 mmHg
Introperation hypotensionOther
Introperation hypotension exposures were quantified as area under the curve (AUC) of mean arterial pressure ≤55, 65, 75 mmHg
| Study group | Role | What they receive |
|---|---|---|
| CVP ≥ 12 | central venous pressure ≥12 mmHg Receives: Other: Venous congestion | |
| CVP ≥ 16 | central venous pressure ≥16 mmHg Receives: Other: Venous congestion | |
| CVP ≥ 20 | central venous pressure ≥20 mmHg Receives: Other: Venous congestion | |
| MAP ≤ 55 mmHg | mean arterial pressure ≤55 mmHg Receives: Other: Introperation hypotension | |
| MAP ≤ 65 mmHg | mean arterial pressure ≤65 mmHg Receives: Other: Introperation hypotension | |
| MAP ≤ 75 mmHg | mean arterial pressure ≤75 mmHg Receives: Other: Introperation hypotension |
What is being measured
The primary outcome is the main question the study is designed to answer.
CSA-AKI
Cardiovascular surgery associated acute kidney injury. AKI was defined using the Kidney Disease: Improving Global Outcome (KDIGO) Clinical Practice Guideline for Acute Kidney Injury as an absolute increase in serum creatinine of ≥ 26 μmol/L within 48 hours or an increase in serum creatinine beyond 1.5 times the baseline value within 7 days
Measured: 7 days post operation
AKD
Acute Kidney Disease, which was defined according to the criteria recommended by the Acute Disease Quality Initiative (ADQI) workgroup.4 AKI was quantified within the 7 days' postoperative period, while AKD was defined as serum creatinine value elevated to 1.5 times the baseline value between 8- and 90-day post-operation period.
Measured: 8 to 90 days post operation
Secondary outcomes (6)
Incidence of AKD of stage 2 and above
incidence of AKD of stage 2 and above, defined as increase in serum creatinine beyond 2.0 times the baseline value between 8- and 90-day post-operation period.
Measured: 8 to 90 days post operation
RRT initiation
renal replacement theray (RRT) initiation
Measured: from the end of operation to the discharge from hospital, up to 90 days.
value of eGFR
postoperative estimated glomerular filtration rate (eGFR), which was calculated by MDRD Equation.
Measured: 7 days after operation
inpatient mortality
mortality during hospital stay
Measured: 30 days after inhospital
ICU length of stay
days stay in ICU
Measured: from the end of operation to the discharge from ICU, up to 90 days.
length of hospital stay
days stay in hospital
Measured: from the end of operation to the discharge from hospital, up to 90 days.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Feb 2022
- Study start1 Jun 2016
- Primary completion30 Jun 2021
- Study completion1 Aug 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (10)Papers the sponsor has linked to this study.
- Other trials for Acute Kidney InjuryStudies of the same condition, open and under way.
- More trials run by Nanjing First Hospital, Nanjing Medical UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 5,127 participants (actual)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, HONG LIANG, Nanjing First Hospital, Nanjing Medical University
- Investigators
- Lihai Chen, PhD, Principal investigator, chenlihai1983@163.com
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05222074
- Sponsor's protocol ID
- KY20211224-09
- Status last verified
- Jan 2022
- First submitted
- 26 Dec 2021
- Last updated
- 3 Feb 2022
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Vervoort D, Swain JD, Pezzella AT, Kpodonu J. Cardiac Surgery in Low- and Middle-Income Countries: A State-of-the-Art Review. Ann Thorac Surg. 2021 Apr;111(4):1394-1400. doi: 10.1016/j.athoracsur.2020.05.181. Epub 2020 Aug 6.
PubMed 32771467Weisse AB. Cardiac surgery: a century of progress. Tex Heart Inst J. 2011;38(5):486-90.
PubMed 22163121Wang Y, Bellomo R. Cardiac surgery-associated acute kidney injury: risk factors, pathophysiology and treatment. Nat Rev Nephrol. 2017 Nov;13(11):697-711. doi: 10.1038/nrneph.2017.119. Epub 2017 Sep 4.
PubMed 28869251Ortega-Loubon C, Fernandez-Molina M, Carrascal-Hinojal Y, Fulquet-Carreras E. Cardiac surgery-associated acute kidney injury. Ann Card Anaesth. 2016 Oct-Dec;19(4):687-698. doi: 10.4103/0971-9784.191578.
PubMed 27716701Swaminathan M, Hudson CC, Phillips-Bute BG, Patel UD, Mathew JP, Newman MF, Milano CA, Shaw AD, Stafford-Smith M. Impact of early renal recovery on survival after cardiac surgery-associated acute kidney injury. Ann Thorac Surg. 2010 Apr;89(4):1098-104. doi: 10.1016/j.athoracsur.2009.12.018.
PubMed 20338313Robert AM, Kramer RS, Dacey LJ, Charlesworth DC, Leavitt BJ, Helm RE, Hernandez F, Sardella GL, Frumiento C, Likosky DS, Brown JR; Northern New England Cardiovascular Disease Study Group. Cardiac surgery-associated acute kidney injury: a comparison of two consensus criteria. Ann Thorac Surg. 2010 Dec;90(6):1939-43. doi: 10.1016/j.athoracsur.2010.08.018.
PubMed 21095340Englberger L, Suri RM, Li Z, Casey ET, Daly RC, Dearani JA, Schaff HV. Clinical accuracy of RIFLE and Acute Kidney Injury Network (AKIN) criteria for acute kidney injury in patients undergoing cardiac surgery. Crit Care. 2011;15(1):R16. doi: 10.1186/cc9960. Epub 2011 Jan 13.
PubMed 21232094Arora P, Rajagopalam S, Ranjan R, Kolli H, Singh M, Venuto R, Lohr J. Preoperative use of angiotensin-converting enzyme inhibitors/angiotensin receptor blockers is associated with increased risk for acute kidney injury after cardiovascular surgery. Clin J Am Soc Nephrol. 2008 Sep;3(5):1266-73. doi: 10.2215/CJN.05271107. Epub 2008 Jul 30.
PubMed 18667735Ouzounian M, Buth KJ, Valeeva L, Morton CC, Hassan A, Ali IS. Impact of preoperative angiotensin-converting enzyme inhibitor use on clinical outcomes after cardiac surgery. Ann Thorac Surg. 2012 Feb;93(2):559-64. doi: 10.1016/j.athoracsur.2011.10.058.
PubMed 22269723Welten GM, Chonchol M, Schouten O, Hoeks S, Bax JJ, van Domburg RT, van Sambeek M, Poldermans D. Statin use is associated with early recovery of kidney injury after vascular surgery and improved long-term outcome. Nephrol Dial Transplant. 2008 Dec;23(12):3867-73. doi: 10.1093/ndt/gfn381. Epub 2008 Jul 15.
PubMed 18628367
Study at a glance
From the registry record, last updated by the sponsor on 3 Feb 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Venous Congestion Rather Than Intraoperative Hypotension is Associated With Acute Adverse Kidney Events After Cardiac Surgery
- ClinicalTrials.gov ID
- NCT05222074
- Acronym / sponsor ID
- KY20211224-09
- Conditions
- Acute Kidney Injury, Acute Kidney Disease
- Keywords
- Acute kidney injury, Intraoperative hypotension, Central venous pressure, Acute kidney disease, Cardiopulmonary bypass
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 5,127 participants (actual)
- Lead sponsor
- Nanjing First Hospital, Nanjing Medical UniversityUniversity, hospital or other
- Study start
- 1 Jun 2016 (actual)
- Primary completion
- 30 Jun 2021 (actual)
- Study completion
- 1 Aug 2021 (actual)
- First posted
- 3 Feb 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study was aimed to explore the effect of intraoperative venous congestion and intraoperative hypotension (IOH) on acute adverse kidney events, defined as acute kidney injury (AKI) and acute kidney disease (AKD), after cardiac surgery
Detailed description
Venous congestion and IOH were primary exposures and quantified as area under the curve (AUC) of central venous pressure ≥12, 16 or 20 mmHg or mean arterial pressure ≤55, 65, 75 mmHg. The primary outcome was AKI or AKD defined as renal dysfunction persisting > 7 days after surgery. Multivariable logistic regression and Cox proportional hazard models were used to determine the association between intraoperative venous congestion/hypotension and postoperative acute adverse kidney events, respectively, adjusted for relevant confounding factors and multiple comparisons.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
- Number of arms
- 6
| Arm | Type | Receives |
|---|---|---|
| CVP ≥ 12 | – | Other: Venous congestioncentral venous pressure ≥12 mmHg |
| CVP ≥ 16 | – | Other: Venous congestioncentral venous pressure ≥16 mmHg |
| CVP ≥ 20 | – | Other: Venous congestioncentral venous pressure ≥20 mmHg |
| MAP ≤ 55 mmHg | – | Other: Introperation hypotensionmean arterial pressure ≤55 mmHg |
| MAP ≤ 65 mmHg | – | Other: Introperation hypotensionmean arterial pressure ≤65 mmHg |
| MAP ≤ 75 mmHg | – | Other: Introperation hypotensionmean arterial pressure ≤75 mmHg |
Who may qualify
- Ages
- 18 to 90 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- All adults undergoing cardiac surgery between 2016 and 2020 (data analysed in 2021) using electronic health records collected from the Nanjing First Hospital.
Key inclusion criteria (4 listed)
- Patients aged 18 years and older,
- Patients underwent cardiac surgery (coronary artery bypass grafting, heart valve surgery, heart transplant or surgical excision of intracardiac myxoma)
- Patients receiving invasive intraoperative BP monitoring during surgery
- Patients underwent cardiopulmonary bypass (CPB) during surgery
Key exclusion criteria (5 listed)
- Pre-existing renal insufficiency defined by presence of abnormal preoperative serum creatinine ≥ 133 μmol/L and/or preoperative diagnosis of renal insufficiency within 6 months'preoperative period.
- Patients with preoperative dialysis dependence within 60 days before the index surgical procedure,
- Surgical duration less than 30 minutes
- Surgery on the aorta
- Insufficient hemodynamic and laboratory data for outcomes and/or exposure ascertainment
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Venous congestionVenous congestion exposures were quantified as area under the curve (AUC) of central venous pressure ≥12, 16 or 20 mmHg | Other | CVP ≥ 12, CVP ≥ 16, CVP ≥ 20 |
| Introperation hypotensionIntroperation hypotension exposures were quantified as area under the curve (AUC) of mean arterial pressure ≤55, 65, 75 mmHg | Other | MAP ≤ 55 mmHg, MAP ≤ 65 mmHg, MAP ≤ 75 mmHg |
Primary outcome
CSA-AKI
Time frame: 7 days post operation
Cardiovascular surgery associated acute kidney injury. AKI was defined using the Kidney Disease: Improving Global Outcome (KDIGO) Clinical Practice Guideline for Acute Kidney Injury as an absolute increase in serum creatinine of ≥ 26 μmol/L within 48 hours or an increase in serum creatinine beyond 1.5 times the baseline value within 7 days
AKD
Time frame: 8 to 90 days post operation
Acute Kidney Disease, which was defined according to the criteria recommended by the Acute Disease Quality Initiative (ADQI) workgroup.4 AKI was quantified within the 7 days' postoperative period, while AKD was defined as serum creatinine value elevated to 1.5 times the baseline value between 8- and 90-day post-operation period.
6 secondary outcomes
Incidence of AKD of stage 2 and above
Time frame: 8 to 90 days post operation
RRT initiation
Time frame: from the end of operation to the discharge from hospital, up to 90 days.
value of eGFR
Time frame: 7 days after operation
inpatient mortality
Time frame: 30 days after inhospital
ICU length of stay
Time frame: from the end of operation to the discharge from ICU, up to 90 days.
length of hospital stay
Time frame: from the end of operation to the discharge from hospital, up to 90 days.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Feb 2022.
- Background: PubMed 32771467Vervoort D, Swain JD, Pezzella AT, Kpodonu J. Cardiac Surgery in Low- and Middle-Income Countries: A State-of-the-Art Review. Ann Thorac Surg. 2021 Apr;111(4):1394-1400. doi: 10.1016/j.athoracsur.2020.05.181. Epub 2020 Aug 6.
- Background: PubMed 22163121Weisse AB. Cardiac surgery: a century of progress. Tex Heart Inst J. 2011;38(5):486-90.
- Background: PubMed 28869251Wang Y, Bellomo R. Cardiac surgery-associated acute kidney injury: risk factors, pathophysiology and treatment. Nat Rev Nephrol. 2017 Nov;13(11):697-711. doi: 10.1038/nrneph.2017.119. Epub 2017 Sep 4.
- Background: PubMed 27716701Ortega-Loubon C, Fernandez-Molina M, Carrascal-Hinojal Y, Fulquet-Carreras E. Cardiac surgery-associated acute kidney injury. Ann Card Anaesth. 2016 Oct-Dec;19(4):687-698. doi: 10.4103/0971-9784.191578.
- Background: PubMed 20338313Swaminathan M, Hudson CC, Phillips-Bute BG, Patel UD, Mathew JP, Newman MF, Milano CA, Shaw AD, Stafford-Smith M. Impact of early renal recovery on survival after cardiac surgery-associated acute kidney injury. Ann Thorac Surg. 2010 Apr;89(4):1098-104. doi: 10.1016/j.athoracsur.2009.12.018.
- Background: PubMed 21095340Robert AM, Kramer RS, Dacey LJ, Charlesworth DC, Leavitt BJ, Helm RE, Hernandez F, Sardella GL, Frumiento C, Likosky DS, Brown JR; Northern New England Cardiovascular Disease Study Group. Cardiac surgery-associated acute kidney injury: a comparison of two consensus criteria. Ann Thorac Surg. 2010 Dec;90(6):1939-43. doi: 10.1016/j.athoracsur.2010.08.018.
- Background: PubMed 21232094Englberger L, Suri RM, Li Z, Casey ET, Daly RC, Dearani JA, Schaff HV. Clinical accuracy of RIFLE and Acute Kidney Injury Network (AKIN) criteria for acute kidney injury in patients undergoing cardiac surgery. Crit Care. 2011;15(1):R16. doi: 10.1186/cc9960. Epub 2011 Jan 13.
- Background: PubMed 18667735Arora P, Rajagopalam S, Ranjan R, Kolli H, Singh M, Venuto R, Lohr J. Preoperative use of angiotensin-converting enzyme inhibitors/angiotensin receptor blockers is associated with increased risk for acute kidney injury after cardiovascular surgery. Clin J Am Soc Nephrol. 2008 Sep;3(5):1266-73. doi: 10.2215/CJN.05271107. Epub 2008 Jul 30.
- Background: PubMed 22269723Ouzounian M, Buth KJ, Valeeva L, Morton CC, Hassan A, Ali IS. Impact of preoperative angiotensin-converting enzyme inhibitor use on clinical outcomes after cardiac surgery. Ann Thorac Surg. 2012 Feb;93(2):559-64. doi: 10.1016/j.athoracsur.2011.10.058.
- Background: PubMed 18628367Welten GM, Chonchol M, Schouten O, Hoeks S, Bax JJ, van Domburg RT, van Sambeek M, Poldermans D. Statin use is associated with early recovery of kidney injury after vascular surgery and improved long-term outcome. Nephrol Dial Transplant. 2008 Dec;23(12):3867-73. doi: 10.1093/ndt/gfn381. Epub 2008 Jul 15.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Lihai Chen, PhD principal investigator
chenlihai1983@163.com
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Acute Kidney Injury and Acute Kidney Disease, run by Nanjing First Hospital, Nanjing Medical University at 1 site in China.
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 5 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 3 Feb 2022. 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 China. 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?
CSA-AKI (time frame: 7 days post operation). 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?
On the ClinicalTrials.gov record for NCT05222074, which also lists 10 linked publications.
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 3 Feb 2022; AzTrials last refreshed its copy on 7 Nov 2026.