End Stage Renal Disease on DialysispHHdNCT04501159
pH, Hypoxia and Haemodialysis
An observational study of End Stage Renal Disease on Dialysis, run by Coventry University at 2 sites in United Kingdom.
Trial summary
End-stage renal disease typically requires haemodialysis to help replace kidney function. However, changes in oxygen uptake during haemodialysis have been linked to increased all-cause mortality. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- End Stage Renal Disease on Dialysis
- What is being tested?
- blood sample pre, during and post HD and Non invasive cardiac output assessment
- Type of treatment
- Medical device
- How many people
- 100 participants
- Where
- 2 sitesUnited Kingdom
- Study dates
- 1 May 2021to 29 Dec 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: End-stage renal disease patients will be recruited from the University Hospitals Coventry \& Warwickshire hemodialysis unit identified by the research team and renal medical professionals.
Who may be able to join
- On haemodialysis for at least 3 months.
- Haemodialysis 3 times per week.
- Age 18 years or older.
Who cannot join
- Central venous catheter.
- Planned kidney transplant during the duration of study.
Trial locations and contacts
2 sites in 1 country.
United Kingdom2 sites, 2 recruiting
- Recruiting
UHCW
Coventry, Warwickshire, CV1 3LN
Scott McGuire, ad5055@Coventry.ac.uk
- Recruiting
University Hospital Coventry and Warwickshire
Coventry, West Midlands, CV3
Scott McGuire
About this study
Official title: Observational Study to Assess pH and Hypoxia During Haemodialysis
End-stage renal disease typically requires haemodialysis to help replace kidney function. However, changes in oxygen uptake during haemodialysis have been linked to increased all-cause mortality. This complication of haemodialysis is linked to decreasing fluid volume, compromising blood flow to tissue and leukostasis within pulmonary tissue. However, an alternative cause of reduced oxygen availability (hypoxia) during haemodialysis is acute alkalosis. Alkalosis during haemodialysis can cause hypoxia via dysregulated ventilation and impaired ability for tissue to extract oxygen. Despite strong rationale for these mechanisms, few studies have fully explored causes of hypoxia during haemodialysis. Greater understanding may help to mitigate the risk associated with this vital treatment option.
The study will comprise of end-stage renal disease patients who regularly undergo haemodialysis. Three blood samples will be attained before, during and after haemodialysis to assess arterial blood gases. In a small subset of patients, white blood cell (WBC) count and cardiac output will be assessed via a non-invasive cardiac output monitor during treatment. Regression analysis will be performed to help identify predictors of hypoxia during haemodialysis. Patient burden is negligible, with blood samples attained from the dialyser as part of routine treatment. In the patients who agree for cardiac output assessment, the patient will be required to have four small noninvasive sensor pads placed on the chest. Patients will be assessed over 3 consecutive treatments during a single week.
Read the detailed description
Alkalosis may explain multiple complications of HD treatment, most notably hypoxemia. Despite a strong rationale for these mechanisms, current consensus suggests ischaemia as the predominant catalyst for hypoxia with HD. However, few studies have characterised pH changes during HD with many using serum bicarbonate as a proxy of pH status. Nevertheless, these studies predominantly indicate acute alkalosis occurrence with HD. Despite these findings, few HD units individualise their bicarbonate prescription or assess pH prior to treatment. Of 554 dialysis facilities worldwide, 49% did not individualise bicarbonate prescriptions. Non-individualised bicarbonate prescription risks sub-therapeutic serum bicarbonate levels and sub-clinical hypoxemia during HD. Assumption of acidosis and consistent baseline pH prior to each HD session may further risk acute alkalosis with HD. Indeed, a normal pH was identified in 26 ESRD patients on commencing HD whilst prescribed dialysate bicarbonate of 32 mmol/L (7.38 ± 0.06) or 26 mmol/L (7.35 ± 0.06). However, pH increased throughout HD with acute alkalosis within the 32 mmol/L group (7.48 ± 0.05). These data, suggest individualised assessment of pH prior to HD could mitigate alkalosis and subsequent hypoxemia. However, small cohorts, limited studies of pH changes over consecutive HD treatments, and few studies of links between hypoxemia and pH limit current understanding. This study therefore aims to explore pH changes and occurrence of hypoxia with HD.
Adult patients (18+) will be recruited irrespective of age, gender, or ethnicity. Due to the observational nature of the study, no personal benefits will be expressed to the patient. Signed consent will be attained from a patient after a minimum of 24hrs has been provided on receipt of the participation information sheet. Any questions will be clearly answered prior to obtaining consent from the patient. Only patients who have full capacity to give consent and full understanding of the purpose and procedures of the study will be recruited.
There is no foreseen risk to the patient from the study. All blood samples are attained via arterial-venous catheter which is inserted prior to treatment as part of the patient's routine haemodialysis. In the small subset of patients who have their cardiac output assessed, the use of four small non-invasive sensors poses no additional discomfort, risk or restriction throughout routine haemodialysis treatment. In a previous project using the noninvasive cardiac output monitor (NICOM), no patient expressed any discomfort whilst using the device during haemodialysis.
All patients involved in the project will be anonymised with a study number for data collection purposes. No identifiable information will be used during post-hoc analysis. Signed consent forms or any other identifiable data will be securely logged within the study site file and secured within the renal research office. Only the chief investigator and renal research nurses will be aware of patient involvement in the study. Access to identifiable data will be strictly limited to the chief investigator.
There is no conflict of interest from the chief investigator or other members of the research team that may influence the study. After completion of the study, data will be compiled and drafted for scientific publication with all data securely archived within the study site file at the renal research department. Any patient expressing interest in the study findings will be provided with the appropriate information verbally or by a written summary of findings.
All blood samples will consist of ~1.5ml which will be analysed immediately after sampling. Samples will subsequently be disposed of immediately after analysis and not be used for any subsequent studies.
- Conditions
- End Stage Renal Disease on Dialysis
- Being tested
- blood sample pre, during and post HD, Non invasive cardiac output assessment
- Keywords
- ESRD: End-stage renal disease, ABG: Arterial blood gases, NICOM: Non-invasive cardiac output monitour, HD: Haemodialysis, WBC: white blood cell
- Medical subject headings
- Renal Insufficiency, Chronic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
blood sample pre, during and post HDOther
Assessment of ABG pre, during and post HD
Non invasive cardiac output assessmentDevice
Also called NICOM
Four ECG style electrodes are placed on the thorax which indirectly measures cardiac output.
| Study group | Role | What they receive |
|---|---|---|
| End-stage renal disease (ESRD) | Patients with end-stage renal disease undergoing regular haemodialysis 3 times weekly.The investigation will measure cardiac output (CO), oxygen saturation (SaO2), arterial blood gases (ABG) and white blood cell (WBC) count during HD to assess changes in haemodynamics, pH, leukostasis and hypoxia. Patients undergoing regular HD will be recruited with arterial blood samples for gas analysis drawn over three consecutive HD treatments. Arterial samples will be taken at the start, 15 minutes and end of HD treatment for ABG and WBC analysis. Dialysis membrane, ultrafiltration volume, serum and dialysate bicarbonate levels will also be recorded. Regression analysis will be performed with pH, ABG and SaO2. A subset of patients will be used to assess an if cardiac output, WBC or pH better predicts PaO2 during HD. Receives: Other: blood sample pre, during and post HD; Device: Non invasive cardiac output assessment |
What is being measured
The primary outcome is the main question the study is designed to answer.
To assess change from baseline to end of haemodialysis in pH.
Blood samples will be collected in heparinized syringes via HD catheter from end-stage renal disease patients before commencing HD and on HD completion. Arterial blood pH will be determined by ABG analyser immediately after blood sample collection. Patients will be assessed for ABG during a typical week (3 days) of HD treatment.
Measured: Change in pH pre to post HD over 3 separate HD treatments in a single week.
To assess change from baseline to end of haemodialysis in PaO2.
Blood samples will be collected in heparinized syringes via HD catheter from end-stage renal disease patients before commencing HD and on HD completion. Arterial oxygen tension (PaO2) will be determined by ABG analyser immediately after blood sample collection. Patients will be assessed for ABG during a typical week (3 days) of HD treatment.
Measured: Change in PaO2 pre to post HD over 3 separate HD treatments in a single week.
Secondary outcomes (2)
To assess changes in pH status over a standard three session HD treatment week assessed via ABG.
To assess the number of patients within an alkalemia state post HD.
Measured: Before and after HD over 3 separate treatments in a single week.
To assess if pH is a better predictor of hypoxia during HD than cardiac output.
Cardiac output, leukopenia and pH status have been described to contribute to hypoxia during HD. Regression analysis will determine which, if any, better predicts hypoxia during HD.
Measured: Assessed before, during (15 mins HD) and after HD on first treatment of the week.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Aug 2020
- Study start1 May 2021
- Primary completion21 Aug 2021
- Study completion29 Dec 2021 (estimated)
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 End Stage Renal Disease on DialysisStudies of the same condition, open and under way.
- 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
- Cross-sectional
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Coventry University
- Sponsor type
- University, hospital or other
- Collaborators
- University Hospitals Coventry and Warwickshire NHS Trust
- Responsible party
- Principal investigator, Scott McGuire, Coventry University
- Investigators
- Scott McGuire, PhD, Principal investigator, Coventry University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04501159
- Sponsor's protocol ID
- 281803
- Acronym
- pHHd
- Status last verified
- Aug 2021
- First submitted
- 29 Jul 2020
- Last updated
- 30 Aug 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
McGuire S, Horton EJ, Renshaw D, Jimenez A, Krishnan N, McGregor G. Hemodynamic Instability during Dialysis: The Potential Role of Intradialytic Exercise. Biomed Res Int. 2018 Feb 27;2018:8276912. doi: 10.1155/2018/8276912. eCollection 2018.
PubMed 29682559Yap JC, Wang YT, Poh SC. Effect of oxygen on breathing irregularities during haemodialysis in patients with chronic uraemia. Eur Respir J. 1998 Aug;12(2):420-5. doi: 10.1183/09031936.98.12020420.
PubMed 9727795Assa S, Hummel YM, Voors AA, Kuipers J, Westerhuis R, Groen H, Bakker SJ, Muller Kobold AC, van Oeveren W, Struck J, de Jong PE, Franssen CF. Hemodialysis-induced regional left ventricular systolic dysfunction and inflammation: a cross-sectional study. Am J Kidney Dis. 2014 Aug;64(2):265-73. doi: 10.1053/j.ajkd.2013.11.010. Epub 2013 Dec 21.
PubMed 24364893Buchanan C, Mohammed A, Cox E, Kohler K, Canaud B, Taal MW, Selby NM, Francis S, McIntyre CW. Intradialytic Cardiac Magnetic Resonance Imaging to Assess Cardiovascular Responses in a Short-Term Trial of Hemodiafiltration and Hemodialysis. J Am Soc Nephrol. 2017 Apr;28(4):1269-1277. doi: 10.1681/ASN.2016060686. Epub 2016 Nov 10.
PubMed 28122851Dasselaar JJ, Slart RH, Knip M, Pruim J, Tio RA, McIntyre CW, de Jong PE, Franssen CF. Haemodialysis is associated with a pronounced fall in myocardial perfusion. Nephrol Dial Transplant. 2009 Feb;24(2):604-10. doi: 10.1093/ndt/gfn501. Epub 2008 Sep 4.
PubMed 18775808Kossari N, Hufnagel G, Squara P. Bioreactance: a new tool for cardiac output and thoracic fluid content monitoring during hemodialysis. Hemodial Int. 2009 Oct;13(4):512-7. doi: 10.1111/j.1542-4758.2009.00386.x. Epub 2009 Sep 16.
PubMed 19758300Misra M. Pro: Higher serum bicarbonate in dialysis patients is protective. Nephrol Dial Transplant. 2016 Aug;31(8):1220-4. doi: 10.1093/ndt/gfw259. Epub 2016 Jul 13.
PubMed 27411723Tentori F, Karaboyas A, Robinson BM, Morgenstern H, Zhang J, Sen A, Ikizler TA, Rayner H, Fissell RB, Vanholder R, Tomo T, Port FK. Association of dialysate bicarbonate concentration with mortality in the Dialysis Outcomes and Practice Patterns Study (DOPPS). Am J Kidney Dis. 2013 Oct;62(4):738-46. doi: 10.1053/j.ajkd.2013.03.035. Epub 2013 May 24.
PubMed 23707043Saravanan P, Davidson NC. Risk assessment for sudden cardiac death in dialysis patients. Circ Arrhythm Electrophysiol. 2010 Oct;3(5):553-9. doi: 10.1161/CIRCEP.110.937888. No abstract available.
PubMed 20959609Gabutti L, Ferrari N, Giudici G, Mombelli G, Marone C. Unexpected haemodynamic instability associated with standard bicarbonate haemodialysis. Nephrol Dial Transplant. 2003 Nov;18(11):2369-76. doi: 10.1093/ndt/gfg383.
PubMed 14551368
Study at a glance
From the registry record, last updated by the sponsor on 30 Aug 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Observational Study to Assess pH and Hypoxia During Haemodialysis
- ClinicalTrials.gov ID
- NCT04501159
- Acronym / sponsor ID
- pHHd / 281803
- Conditions
- End Stage Renal Disease on Dialysis
- Keywords
- ESRD: End-stage renal disease, ABG: Arterial blood gases, NICOM: Non-invasive cardiac output monitour, HD: Haemodialysis, WBC: white blood cell
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Coventry UniversityUniversity, hospital or other
- Collaborators
- University Hospitals Coventry and Warwickshire NHS Trust
- Study start
- 1 May 2021 (actual)
- Primary completion
- 21 Aug 2021 (actual)
- Study completion
- 29 Dec 2021 (estimated)
- First posted
- 6 Aug 2020 (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.
End-stage renal disease typically requires haemodialysis to help replace kidney function. However, changes in oxygen uptake during haemodialysis have been linked to increased all-cause mortality. This complication of haemodialysis is linked to decreasing fluid volume, compromising blood flow to tissue and leukostasis within pulmonary tissue. However, an alternative cause of reduced oxygen availability (hypoxia) during haemodialysis is acute alkalosis. Alkalosis during haemodialysis can cause hypoxia via dysregulated ventilation and impaired ability for tissue to extract oxygen. Despite strong rationale for these mechanisms, few studies have fully explored causes of hypoxia during haemodialysis. Greater understanding may help to mitigate the risk associated with this vital treatment option.
The study will comprise of end-stage renal disease patients who regularly undergo haemodialysis. Three blood samples will be attained before, during and after haemodialysis to assess arterial blood gases. In a small subset of patients, white blood cell (WBC) count and cardiac output will be assessed via a non-invasive cardiac output monitor during treatment. Regression analysis will be performed to help identify predictors of hypoxia during haemodialysis. Patient burden is negligible, with blood samples attained from the dialyser as part of routine treatment. In the patients who agree for cardiac output assessment, the patient will be required to have four small noninvasive sensor pads placed on the chest. Patients will be assessed over 3 consecutive treatments during a single week.
Detailed description
Alkalosis may explain multiple complications of HD treatment, most notably hypoxemia. Despite a strong rationale for these mechanisms, current consensus suggests ischaemia as the predominant catalyst for hypoxia with HD. However, few studies have characterised pH changes during HD with many using serum bicarbonate as a proxy of pH status. Nevertheless, these studies predominantly indicate acute alkalosis occurrence with HD. Despite these findings, few HD units individualise their bicarbonate prescription or assess pH prior to treatment. Of 554 dialysis facilities worldwide, 49% did not individualise bicarbonate prescriptions. Non-individualised bicarbonate prescription risks sub-therapeutic serum bicarbonate levels and sub-clinical hypoxemia during HD. Assumption of acidosis and consistent baseline pH prior to each HD session may further risk acute alkalosis with HD. Indeed, a normal pH was identified in 26 ESRD patients on commencing HD whilst prescribed dialysate bicarbonate of 32 mmol/L (7.38 ± 0.06) or 26 mmol/L (7.35 ± 0.06). However, pH increased throughout HD with acute alkalosis within the 32 mmol/L group (7.48 ± 0.05). These data, suggest individualised assessment of pH prior to HD could mitigate alkalosis and subsequent hypoxemia. However, small cohorts, limited studies of pH changes over consecutive HD treatments, and few studies of links between hypoxemia and pH limit current understanding. This study therefore aims to explore pH changes and occurrence of hypoxia with HD.
Adult patients (18+) will be recruited irrespective of age, gender, or ethnicity. Due to the observational nature of the study, no personal benefits will be expressed to the patient. Signed consent will be attained from a patient after a minimum of 24hrs has been provided on receipt of the participation information sheet. Any questions will be clearly answered prior to obtaining consent from the patient. Only patients who have full capacity to give consent and full understanding of the purpose and procedures of the study will be recruited.
There is no foreseen risk to the patient from the study. All blood samples are attained via arterial-venous catheter which is inserted prior to treatment as part of the patient's routine haemodialysis. In the small subset of patients who have their cardiac output assessed, the use of four small non-invasive sensors poses no additional discomfort, risk or restriction throughout routine haemodialysis treatment. In a previous project using the noninvasive cardiac output monitor (NICOM), no patient expressed any discomfort whilst using the device during haemodialysis.
All patients involved in the project will be anonymised with a study number for data collection purposes. No identifiable information will be used during post-hoc analysis. Signed consent forms or any other identifiable data will be securely logged within the study site file and secured within the renal research office. Only the chief investigator and renal research nurses will be aware of patient involvement in the study. Access to identifiable data will be strictly limited to the chief investigator.
There is no conflict of interest from the chief investigator or other members of the research team that may influence the study. After completion of the study, data will be compiled and drafted for scientific publication with all data securely archived within the study site file at the renal research department. Any patient expressing interest in the study findings will be provided with the appropriate information verbally or by a written summary of findings.
All blood samples will consist of ~1.5ml which will be analysed immediately after sampling. Samples will subsequently be disposed of immediately after analysis and not be used for any subsequent studies.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| End-stage renal disease (ESRD) | – | Other: blood sample pre, during and post HD, Device: Non invasive cardiac output assessmentPatients with end-stage renal disease undergoing regular haemodialysis 3 times weekly.The investigation will measure cardiac output (CO), oxygen saturation (SaO2), arterial blood gases (ABG) and white blood cell (WBC) count during HD to assess changes in haemodynamics, pH, leukostasis and hypoxia. Patients undergoing regular HD will be recruited with arterial blood samples for gas analysis drawn over three consecutive HD treatments. Arterial samples will be taken at the start, 15 minutes and end of HD treatment for ABG and WBC analysis. Dialysis membrane, ultrafiltration volume, serum and dialysate bicarbonate levels will also be recorded. Regression analysis will be performed with pH, ABG and SaO2. A subset of patients will be used to assess an if cardiac output, WBC or pH better predicts PaO2 during HD. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- End-stage renal disease patients will be recruited from the University Hospitals Coventry \& Warwickshire hemodialysis unit identified by the research team and renal medical professionals.
Key inclusion criteria (3 listed)
- On haemodialysis for at least 3 months.
- Haemodialysis 3 times per week.
- Age 18 years or older.
Key exclusion criteria (2 listed)
- Central venous catheter.
- Planned kidney transplant during the duration of study.
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 |
|---|---|---|
| blood sample pre, during and post HDAssessment of ABG pre, during and post HD | Other | End-stage renal disease (ESRD) |
| Non invasive cardiac output assessmentAlso: NICOMFour ECG style electrodes are placed on the thorax which indirectly measures cardiac output. | Device | End-stage renal disease (ESRD) |
Primary outcome
To assess change from baseline to end of haemodialysis in pH.
Time frame: Change in pH pre to post HD over 3 separate HD treatments in a single week.
Blood samples will be collected in heparinized syringes via HD catheter from end-stage renal disease patients before commencing HD and on HD completion. Arterial blood pH will be determined by ABG analyser immediately after blood sample collection. Patients will be assessed for ABG during a typical week (3 days) of HD treatment.
To assess change from baseline to end of haemodialysis in PaO2.
Time frame: Change in PaO2 pre to post HD over 3 separate HD treatments in a single week.
Blood samples will be collected in heparinized syringes via HD catheter from end-stage renal disease patients before commencing HD and on HD completion. Arterial oxygen tension (PaO2) will be determined by ABG analyser immediately after blood sample collection. Patients will be assessed for ABG during a typical week (3 days) of HD treatment.
2 secondary outcomes
To assess changes in pH status over a standard three session HD treatment week assessed via ABG.
Time frame: Before and after HD over 3 separate treatments in a single week.
To assess if pH is a better predictor of hypoxia during HD than cardiac output.
Time frame: Assessed before, during (15 mins HD) and after HD on first treatment of the week.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Aug 2021.
- Background: PubMed 29682559McGuire S, Horton EJ, Renshaw D, Jimenez A, Krishnan N, McGregor G. Hemodynamic Instability during Dialysis: The Potential Role of Intradialytic Exercise. Biomed Res Int. 2018 Feb 27;2018:8276912. doi: 10.1155/2018/8276912. eCollection 2018.
- Background: PubMed 9727795Yap JC, Wang YT, Poh SC. Effect of oxygen on breathing irregularities during haemodialysis in patients with chronic uraemia. Eur Respir J. 1998 Aug;12(2):420-5. doi: 10.1183/09031936.98.12020420.
- Background: PubMed 24364893Assa S, Hummel YM, Voors AA, Kuipers J, Westerhuis R, Groen H, Bakker SJ, Muller Kobold AC, van Oeveren W, Struck J, de Jong PE, Franssen CF. Hemodialysis-induced regional left ventricular systolic dysfunction and inflammation: a cross-sectional study. Am J Kidney Dis. 2014 Aug;64(2):265-73. doi: 10.1053/j.ajkd.2013.11.010. Epub 2013 Dec 21.
- Background: PubMed 28122851Buchanan C, Mohammed A, Cox E, Kohler K, Canaud B, Taal MW, Selby NM, Francis S, McIntyre CW. Intradialytic Cardiac Magnetic Resonance Imaging to Assess Cardiovascular Responses in a Short-Term Trial of Hemodiafiltration and Hemodialysis. J Am Soc Nephrol. 2017 Apr;28(4):1269-1277. doi: 10.1681/ASN.2016060686. Epub 2016 Nov 10.
- Background: PubMed 18775808Dasselaar JJ, Slart RH, Knip M, Pruim J, Tio RA, McIntyre CW, de Jong PE, Franssen CF. Haemodialysis is associated with a pronounced fall in myocardial perfusion. Nephrol Dial Transplant. 2009 Feb;24(2):604-10. doi: 10.1093/ndt/gfn501. Epub 2008 Sep 4.
- Background: PubMed 19758300Kossari N, Hufnagel G, Squara P. Bioreactance: a new tool for cardiac output and thoracic fluid content monitoring during hemodialysis. Hemodial Int. 2009 Oct;13(4):512-7. doi: 10.1111/j.1542-4758.2009.00386.x. Epub 2009 Sep 16.
- Background: PubMed 27411723Misra M. Pro: Higher serum bicarbonate in dialysis patients is protective. Nephrol Dial Transplant. 2016 Aug;31(8):1220-4. doi: 10.1093/ndt/gfw259. Epub 2016 Jul 13.
- Background: PubMed 23707043Tentori F, Karaboyas A, Robinson BM, Morgenstern H, Zhang J, Sen A, Ikizler TA, Rayner H, Fissell RB, Vanholder R, Tomo T, Port FK. Association of dialysate bicarbonate concentration with mortality in the Dialysis Outcomes and Practice Patterns Study (DOPPS). Am J Kidney Dis. 2013 Oct;62(4):738-46. doi: 10.1053/j.ajkd.2013.03.035. Epub 2013 May 24.
- Background: PubMed 20959609Saravanan P, Davidson NC. Risk assessment for sudden cardiac death in dialysis patients. Circ Arrhythm Electrophysiol. 2010 Oct;3(5):553-9. doi: 10.1161/CIRCEP.110.937888. No abstract available.
- Background: PubMed 14551368Gabutti L, Ferrari N, Giudici G, Mombelli G, Marone C. Unexpected haemodynamic instability associated with standard bicarbonate haemodialysis. Nephrol Dial Transplant. 2003 Nov;18(11):2369-76. doi: 10.1093/ndt/gfg383.
- 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.
Scott McGuire, PhD principal investigator
Coventry University
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of End Stage Renal Disease on Dialysis, run by Coventry University at 2 sites in United Kingdom.
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 3 inclusion and 2 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: status not confirmed, as of the sponsor's last update on 30 Aug 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United Kingdom. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Scott McGuire, PhD (07980113721, ad5055@uni.coventry.ac.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
To assess change from baseline to end of haemodialysis in pH. (time frame: Change in pH pre to post HD over 3 separate HD treatments in a single week.). 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 NCT04501159, 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 30 Aug 2021.