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Results for “DIATHERMY”

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At least 865 records · Page 48Linked to original sources
PubMed1994

Surgical diathermy is not suitable for vascular tissue welding.

The possibility of using radiofrequency energy (RFE) to produce a sutureless anastomosis is attractive both to the military surgeon and on the grounds of cost and simplicity. To investigate this, fresh rabbit aorta was divided lengthways into 4 mm strips and apposed, intima-to-itima. A Valleylab Force 30 Electrosurgery machine supplied RFE at 500 kHz. The energy was applied using standard bipolar forceps and 121 attempts were made to weld the tissue. Seventy seven welds resulted of which 36 were able to withstand a distraction force of greater than 0.1N: the strongest weld was disrupted at 0.35N. Intact tissue withstood a distraction force of greater than 2N, whilst sutured joints disrupted at 0.97 N. It is concluded therefore that radiofrequency energy at 500 kHz does not satisfactorily weld vascular tissue.

Anastomosis, Surgical↗
PubMed1996

Ultrastructural study of peripheral nerve injury induced by monopolar and bipolar diathermy.

The effect of unipolar and bipolar electrocoagulation on human and albino rat peripheral nerves was examined by transmission electron microscopy. The greater auricular nerve obtained from operated patients and the femoral nerve of an albino rat were chosen for this study. The nerves were divided into three groups: controls, segments of nerves spot-coagulated with unipolar instruments, and segments of nerves spot-coagulated with bipolar instruments. Significant cell injury, expressed by marked damage of the Schwann cells, was induced by unipolar coagulation in both myelinated and unmyelinated nerves, in humans as well as in the albino rat. However, in bipolar-treated nerves, the Schwann cell architecture remained well preserved in both types of nerves. The results are in favor of bipolar electrocoagulation when applied in areas rich in neurovascular supplies.

Animals↗
PubMed2004

The hazards of diathermy plume. Part 1. The literature search.

Laser and electrocautery devices used during surgery produce smoky emissions that may contain vapours and particulate aerosols, which can have a chemical and biological impact on those exposed. A group of theatre staff and specialist nurses at Rotherham District General Hospital got together to draw up a risk assessment into the possible occupational exposure of theatre staff, with a view to eliminating or controlling these hazards as far as possible.

Air Pollutants, Occupational↗