Reduction of Microemboli of Air Using a New Developed Air Trap (EmbolessTM) During Haemodialysis

NCT ID: NCT06168539

Last Updated: 2024-12-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-05-11

Study Completion Date

2024-12-10

Brief Summary

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During hemodialysis (HD) the blood of the patient pass an extracorporeal circuit that contains a dialyzer for rinsing and a venous chamber (air trap) to prevent from air embolism through the return blood into the patient. However, air traps in clinical use have limited capacity to prevent from microemboli of air to enter the return bloodline and deposit as emboli in the body such as lungs, heart and brain. The Investigator developed the air trap Emboless that was patented. In vitro studies showed significantly better reduction of microemboli contaminations than air traps compared to that in clinical use.

The present randomized clinical trial compares two different air traps used by the same patients in a cross-over design (as pairs) using the Emboless compared with the Fresenius 4008/5008 (F5008).

Chronic HD patients are randomized to perform the first HD with either their standard air trap (F5008) in the venous bloodline tubing or using the Emboless bloodline and vice versa. Each patient was included to make two paired series. A safety committee evaluates if significantly worse outcome appears especially with the Emboless, to stop the study.

During HD the microbubbles are counted by a GAMPT ultrasound device using two probes. One probe is set at the inlet side of the air trap and the second at the outlet side. The outlet side represents data of microbubbles in the blood that are entering into the patient. Comparative non-parametric paired analyses are performed between the air traps.

Monitoring of the study is performed.

Detailed Description

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During hemodialysis (HD) the blood of the patient pass an extracorporeal circuit that contains a dialyzer for rinsing and a venous chamber (air trap) to prevent from air embolism through the return blood into the patient. However, air traps in clinical use have limited capacity to prevent from microemboli of air to enter the return bloodline and deposit as emboli in the body such as lungs, heart and brain. The Investigator developed the air trap Emboless that was patented in Europe, USA and India. In vitro studies showed significantly better reduction of microemboli contaminations than air traps compared to that in clinical use.

The present randomized clinical trial compares two different air traps used by the same patients in a cross-over design (as pairs) using the Emboless compared with the Fresenius 4008/5008 (F5008).

Chronic HD patients are randomized to perform the first HD with either their standard air trap (F5008) in the venous bloodline tubing or using the Emboless bloodline and vice versa. Each patient is included to make two paired series. A maximum of 30 patients are planned. Each with 2 series of each two different sets of air traps that would give a total of 120 dialyses. A safety committee evaluates if significantly worse outcome appears especially with the Emboless.

During HD the microbubbles are counted by a GAMPT ultrasound device using two probes. One probe is set at the inlet side of the air trap and the second at the outlet side. The outlet side represents data of microbubbles in the blood that are entering into the patient. Comparative non-parametric paired analyses are performed between the air traps.

Monitoring of the study is performed.

Conditions

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Hemodialysis Complication Air Embolism Extracorporeal Circulation; Complications

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Each patient is randomized to start with either standard or intervention vice versa. Paired analyses are done.
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Measuring data of microemboli counts is masked for the patient.

Study Groups

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Standard

A regular standard dialysis is performed and held as active comparator for analysis

Group Type ACTIVE_COMPARATOR

Standard

Intervention Type OTHER

Standard dialysis set is used as comparative

Emboless

Emboless tubing set is part of the extracorporeal venous bloodline instead of the venous chamber by Fresenius (see standard above).

For more information see reference Jonsson et al 2023- mentioned in references.

Group Type EXPERIMENTAL

Emboless

Intervention Type OTHER

Emboless has the US patent number 8894749 is compared to standard dialysis See also reference Jonsson et al 2023 referred to in the main text.

Interventions

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Emboless

Emboless has the US patent number 8894749 is compared to standard dialysis See also reference Jonsson et al 2023 referred to in the main text.

Intervention Type OTHER

Standard

Standard dialysis set is used as comparative

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

Accepted are all patients performing chronic HD due to End Stage renal disease of any reason:

* 18 years and older
* accept, by consent, to participate in the study
* both genders,
* any ethnicity

Exclusion Criteria

Patients that are expected not to fulfil a whole series of two dialysis within the study such as those:

* who suffer from active cancer or severe infection, cachexia or are planned for kidney transplantation close to the study period.
* patients that by any reason are considered inappropriate by the principal investigator, such as patients that experience severe hypotensive episodes during standard dialysis.

Home-haemodialysis treatments and self-care dialysis treatments are not included in the study. If such patient accepts to participate in the study, he/she has to adapt to study criteria (assisted treatment).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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UmeƄ University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Ulf Forsberg, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Region Vasterbotten Skelleftea Hospital, Sweden

Locations

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Region Vasterbotten, Skelleftea Sjukhus, Dialysen

SkellefteƄ, , Sweden

Site Status

Countries

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Sweden

References

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Stegmayr BG. Sources of Mortality on Dialysis with an Emphasis on Microemboli. Semin Dial. 2016 Nov;29(6):442-446. doi: 10.1111/sdi.12527. Epub 2016 Aug 16.

Reference Type BACKGROUND
PMID: 27528100 (View on PubMed)

Stegmayr B. Air contamination during hemodialysis should be minimized. Hemodial Int. 2017 Apr;21(2):168-172. doi: 10.1111/hdi.12474. Epub 2016 Aug 30.

Reference Type BACKGROUND
PMID: 27576675 (View on PubMed)

Matsuda K, Fissell R, Ash S, Stegmayr B. Long-Term Survival for Hemodialysis Patients Differ in Japan Versus Europe and the USA. What Might the Reasons Be? Artif Organs. 2018 Dec;42(12):1112-1118. doi: 10.1111/aor.13363. Epub 2018 Nov 11. No abstract available.

Reference Type BACKGROUND
PMID: 30417399 (View on PubMed)

Forsberg U, Jonsson P, Stegmayr B. Air contamination during medical treatment results in deposits of microemboli in the lungs: An autopsy study. Int J Artif Organs. 2019 Sep;42(9):477-481. doi: 10.1177/0391398819840363. Epub 2019 Apr 11.

Reference Type RESULT
PMID: 30973284 (View on PubMed)

Forsberg U, Jonsson P, Stegmayr B. Microemboli induced by air bubbles may be deposited in organs as a consequence of contamination during medical care. Clin Kidney J. 2022 Oct 6;16(1):159-166. doi: 10.1093/ckj/sfac217. eCollection 2023 Jan.

Reference Type RESULT
PMID: 36726427 (View on PubMed)

Jonsson P, Stegmayr C, Stegmayr B, Forsberg U. Venous chambers in clinical use for hemodialysis have limited capacity to eliminate microbubbles from entering the return bloodline: An in vitro study. Artif Organs. 2023 Jun;47(6):961-970. doi: 10.1111/aor.14495. Epub 2023 Jan 10.

Reference Type RESULT
PMID: 36594759 (View on PubMed)

Other Identifiers

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CIV-20-02-031667

Identifier Type: -

Identifier Source: org_study_id