ISRCTN ISRCTN42875310
DOI https://doi.org/10.1186/ISRCTN42875310
Submission date
04/12/2023
Registration date
08/02/2024
Last edited
28/02/2025
Recruitment status
No longer recruiting
Overall study status
Ongoing
Condition category
Surgery
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
Carotid endarterectomy (CEA) is a surgical procedure designed to treat carotid artery disease, specifically the narrowing or stenosis of the carotid arteries (internal carotid stenosis), which are major blood vessels in the neck that supply blood to the brain. The goal of the procedure is to remove the atherosclerotic plaque that has built up within the carotid artery and to restore normal blood flow to the brain.
This study examines the effectiveness of plexus anesthesia versus general anesthesia for carotid endarterectomy procedures. We have adopted plexus anesthesia as our primary approach since January 2023, and this study presents a detailed evaluation of the initial 50 consecutive cases. We carefully considered both advantages and potential drawbacks to assess the long-term viability of plexus anesthesia for patients with significant and symptomatic carotid stenosis. Additionally, we provide insights into the patients' perspectives and experiences during carotid endarterectomy under plexus anesthesia.

Who can participate?
Patients aged over 18 years with symptomatic internal carotid stenosis

What does the study involve?
Death rates, serious adverse (neurological) events, complications and conversions of plexus anesthesia are collected from electronic patient files.

What are the possible benefits and risks of participating?
This is a retrospective study so there is no further burden for the participants. All data are anonymized and encoded.

Where is the study run from?
Euregio-Klinik (Germany)

When is the study starting and how long is it expected to run for?
December 2023 to October 2025

Who is funding the study?
Euregio-Klinik (Germany)

Who is the main contact?
1. Ahmed Algharib, ahmed.algharib@euregio-klinik.de
2. Dr Giel G. Koning, giel.koning@euregio-klinik.de

Contact information

Mr Ahmed Algharib
Public, Scientific

Albert-Schweitzerstrasse 10
Nordhorn
48527
Germany

ORCiD logoORCID ID 0009-0002-2745-0944
Phone +49 (0) 5921/841641
Email ahmed.algharib@euregio-klinik.de
Dr Giel G. Koning
Principal Investigator

Albert-Schweitzerstrasse 10
Nordhorn
48527
Germany

ORCiD logoORCID ID 0009-0001-9112-5313
Phone +49 (0) 5921/841641
Email giel.koning@euregio-klinik.de

Study information

Study designRetrospective consecutive case series
Primary study designObservational
Secondary study designCase series
Study setting(s)Hospital
Study typeOther, Quality of life, Efficacy
Participant information sheet Not applicable (retrospective study)
Scientific titlePlexus anesthesia introduced as the standard technique for carotid endarterectomy in a regional teaching hospital: the first 50 consecutive cases
Study objectivesIs introduction of plexus anesthesia for carotid endarterectomy patients in a regional teaching hospital possible within literature based complication rates?
Ethics approval(s)Ethics approval not required
Ethics approval additional informationThe board of the Ärztekammer Niedersachsen, Hannover, Germany have stated that no further ethical permission is needed for this study as the data collected has been anonymized in such a way that the person concerned cannot or can no longer be identified
Health condition(s) or problem(s) studiedPlexus anesthesia for carotid endarterectomy patients
InterventionAll symptomatic carotid endarterectomy patients are already operated on and encoded, all pre-, peri- and postoperative data codes will be used. Data is accessible in electronic patient files after informed consent of the Medical Ethical Board in Hannover has been obtained.
Intervention typeProcedure/Surgery
Primary outcome measure1. Mortality collected from electronic patient files from operation date (in 2023) to 31/10/2023
2. Serious adverse (neurological) events collected from electronic patient files from operation date (in 2023) to 31/10/2023
Secondary outcome measuresComplications and conversions of plexus anesthesia collected from electronic patient files from operation date to 31/10/2023
Overall study start date01/12/2023
Completion date01/10/2025

Eligibility

Participant type(s)Patient, Health professional
Age groupAdult
Lower age limit18 Years
Upper age limit100 Years
SexBoth
Target number of participants50
Key inclusion criteria1. Symptomatic internal carotid stenosis (>50%)
2. Adult (>18 years)
Key exclusion criteriaPrevious ipsilateral internal carotid stenosis
Date of first enrolment01/01/2023
Date of final enrolment31/10/2023

Locations

Countries of recruitment

  • Germany

Study participating centre

Euregio Hospital
Albert-Schweitzerstrasse 10
Nordhorn
48527
Germany

Sponsor information

Euregio-Klinik
Hospital/treatment centre

Albert Schweitzerstrasse 10
Nordhorn
48527
Germany

Phone +49 (0) 5921841641
Email Ruediger.moeller@euregio-klinik.de
Website https://www.euregio-klinik.de

Funders

Funder type

Hospital/treatment centre

Euregio-Klinik

No information available

Results and Publications

Intention to publish date30/06/2025
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryStored in non-publicly available repository, Not expected to be made available
Publication and dissemination planPlanned publication in a peer-reviewed vascular surgery journal. The findings will be presented following the guidelines outlined in the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) Statement, which offers a structured framework for reporting observational studies.
IPD sharing planIPD storage in a non-public and password-accessible computer. The datasets generated during and/or analysed during the current study are not expected to be made available due to the privacy laws in Germany. Moreover, the codes are not traceable to real patient data anymore after this was double-checked.

Editorial Notes

28/02/2025: The overall study end date was changed from 01/10/2024 to 01/10/2025.
09/01/2025: The intention to publish date was changed from 31/12/2024 to 30/06/2025.
05/07/2024: The following changes were made:
1. The overall study end date was changed from 01/08/2024 to 01/10/2024.
2. The intention to publish date was changed from 01/07/2024 to 31/12/2024.
26/01/2024: Study's existence confirmed by the Ärztekammer Niedersachsen.