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Published on: February 28, 2012
Automated external defibrillators on board merchant vessels? Preliminary report article for discussion
Birger Neubauer1, Walter G Green
1See-Berufsgenossenschaft, Reimerswiete 2, D-20457 Hamburg, Germany. Birger.Neubauer@See-BG.de
Insights
Automated external defibrillators (AEDs) are suitable for merchant vessels, with seafarers handling them correctly. However, data transmission requires standardized software and smaller file sizes for effective use at sea.
Area of Science:
- Maritime Medicine
- Emergency Medical Devices
- Cardiology
Background:
- Acute heart diseases are a leading cause of death on merchant vessels.
- Current treatments for ventricular fibrillation at sea are insufficient.
- Automated external defibrillators (AEDs) are a potential solution for onboard emergency cardiac care.
Purpose of the Study:
- To evaluate the suitability of common automated external defibrillators (AEDs) for use on merchant vessels.
- To assess seafarers' ability to handle AEDs in simulated maritime emergencies.
- To test AED performance and data transmission capabilities under shipboard conditions.
Main Methods:
- Nine seafarers were trained on four common AED models using video presentations.
- AED handling was tested in simulated emergencies, with subjective ratings collected.
- Electrocardiogram (ECG) data were recorded under engine room vibrations and transmitted via satellite.
Main Results:
- All seafarers successfully operated the AEDs, rating them highly.
- AEDs successfully registered ECGs even with significant shipboard vibrations.
- ECG data transmission via satellite was limited by file size and software compatibility issues.
Conclusions:
- AEDs are a viable option for treating ventricular fibrillation on merchant vessels.
- User-friendly AEDs with clear feedback mechanisms are preferred.
- Improvements in data transmission protocols, including software standardization and file size limitations, are crucial for effective remote medical support.
Objectives:
Acute heart diseases are the most frequent causes for fatalities on merchant vessels. Presently there is no sufficient therapy available to treat ventricular fibrillation. The aim of this study was to test whether common automated external defibrillators [AED] may be appropriate for the use aboard merchant vessels.
Methods:
In 2005, nine seafarers were introduced to four common models of AED (HeartStartFR2+, Lifepak500, AEDplus, FREDeasy) using standard video or DVD presentations. AED handling by the subjects was tested in standardized simulated emergency scenarios. After training, they subjectively rated each AED on 24 factors involved in the introduction and handling of the device. An actual ECG was then obtained with each AED at a site located beside the ship's main engine to test under maximum vibration. The ECG data were extracted and sent as an e-mail attachment via satellite to the German Telemedical Maritime Assistance Service [TMAS] in Cuxhaven.
Results And Conclusions:
All subjects handled the AED correctly. The AED received a total amount of points in the range between 2125 to 2241 (of 2400 possible). The subjects preferred AED with coloured as well as light marked buttons which gave a feedback (e.g. audible tones) when they were pressed. All AED were able to register an ECG in the vibrating ambient. Due to interface problems it was only possible to extract three ECG files, and only two files (data < 300 kB) could be sent as e-mail attachment via satellite to the German TMAS. In noisy areas the AED must guide the user, e.g. by screen massages and/or pictograms. Displays should provide additional data to help assess resuscitation effectiveness. A special procedure is necessary to ensure that ships and TMAS own the same software to read the transmitted ECG files, which are not allowed to exceed a size of 300 kB.
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