Related Experiment Video
Updated: Aug 5, 2026

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
Published on: June 12, 2021
Medical, surgical, and technical complications with the COMBI-40
1Department of Otolaryngology, Klinikum rechts der Isar, Technical University, Munich, Germany.
Insights
This study details cochlear implantation complications using the COMBI-40 device. The overall complication rate was 4.6%, with flap necrosis and electrode malposition being most common.
Area of Science:
- Otolaryngology
- Medical Device Technology
- Surgical Complications
Background:
- Cochlear implantation is a complex surgical procedure.
- The COMBI-40 device is a type of cochlear implant.
- Understanding device-specific complication rates is crucial for patient safety and surgical technique refinement.
Purpose of the Study:
- To report the incidence and types of complications associated with the COMBI-40 cochlear implant.
- To analyze the frequency of specific complications such as flap necrosis and electrode positioning issues.
- To compare complication rates with previously published data for other cochlear implant devices.
Main Methods:
- A retrospective analysis of 325 cochlear implantations using the COMBI-40 device.
- Data collected between January 1995 and May 1996.
- Standardized complication report forms were utilized to document adverse events.
Main Results:
- An overall complication rate of 4.6% was observed.
- The most frequent complications were flap necrosis and incorrect electrode positioning.
- No technical failures of the COMBI-40 device were reported.
Conclusions:
- The COMBI-40 device demonstrated a low overall complication rate.
- Flap necrosis and electrode malposition are the primary concerns requiring attention in COMBI-40 implantations.
- The incidence of complications with the COMBI-40 appears favorable compared to other reported devices.
Abstract:
We present the first report on complications of cochlear implantation with the COMBI-40 (Med-el, Innsbruck, Austria). Between January 1995 and May 1996 325 devices had been implanted by 58 different surgeons. Complications were reported with the help of standardized complication report form. The overall rate of complications was 4.6%. Most common problems were flap necrosis and incorrect positioning of the electrode. No technical failures occurred. The incidence of complications was lower than those reported by other authors.
Related Concept Videos
Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Oxygen Delivering System III: Tracheostomy and T-piece
Tracheostomy
A tracheostomy is a surgically created opening (stoma) in the anterior part of the trachea. It is used to establish a patient airway, bypass an upper airway obstruction, simplify the removal of secretions, permit long-term...
Peritoneal Dialysis II: Peritoneal Dialysis Systems and Complications
Healing II: Complications
Complications of Diabetes Mellitus

