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PubMed · 10168137

Know your scopes.

Abstract

How much do you know about the endoscopes you buy? If you're anything like most of your colleagues in purchasing, the answer probably is, "Not enough." Endoscopes are incredibly complex instruments. They're also very expensive (but you already knew that). So it makes sense to know something about them when making purchase decisions. Endoscope expert Patricia Holland, R.N., marketing and clinical consultant for FiberTech Medical, often provides education on the structure and operation of endoscopes, as well as criteria for selecting them. The following discussion of flexible endoscopes was adapted from her presentation at a recent conference sponsored by the Society of Gastroenterology Nurses and Associates, of which she is a past president. Material provided by FiberTech, an endoscope repair company based in Baltimore, was also incorporated.

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BibTeXRIS

P Holland. 1997. Know your scopes.. https://pubmed.ncbi.nlm.nih.gov/10168137/

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Experience with various 3-dimensional navigation systems in head and neck surgery.

OBJECTIVE: To evaluate the benefits and difficulties encountered when using various 3-dimensional (3-D) navigation systems in head and neck procedures. DESIGN: Five different navigation systems were used for preoperative planning and intraoperative 3-D navigation in procedures at the paranasal sinuses, the frontal and lateral skull bases, and the petrous bone. INTERVENTION: Intraoperative 3-D localizing systems (position-sensitive mechanical arms, infrared cameras, etc) demand reliable patient fixation on the operating table. We achieved this by developing a noninvasive head holder. Other systems allow patient movements by using magnetic digitizing technology (ARTMA System) and sophisticated programming. RESULT: Having surpassed an initial learning curve, we now achieve an accuracy of 1 to 2 mm regularly. Especially in paranasal and frontal basal surgery, all navigation systems used provide valuable positioning information during surgery. In particular for revision or tumor surgery, decisive benefits resulted from use of these systems: shorter overall operation time; safer manipulation near delicate structures; and reliable identification of the skull base even in patients with bleeding, scarring, or missing anatomical landmarks. CONCLUSIONS: We performed approximately 250 operations with different systems and introduced navigation at the lateral skull base and the petrous bone with mechanical, optic, and magnetic digitizers. In these anatomical areas, navigation was used successfully; the technical challenge is greatest at the lateral skull base, however.

Endoscopes