Microlaryngoscopy is the examination of the larynx (voice box) while the patient is under a general anaesthetic. Microlaryngoscopy is done to find and treat problems of the voice box, such as hoarseness of voice. An ENT surgeon will put a short metal tube (a laryngoscope) through the mouth into the voice box. A microscope is then used to look into the voice box to find what the problem is. If needed, surgery on the voice box can also be done through the laryngoscope.
If there are any problem areas, a small part of the lining of the voice box is taken away for laboratory examination. This is called a biopsy.
Pre Op Evaluation:
(Here a Carmalite nun who is a singer and teacher came with husky voice lasting more than a month.A flexible fibre optic examination of the larynx is performed.Biopsy is planned under general anesthesia.)
(The Anesthetic Techniques involved in putting a patient for Microlaryngoscopy procedure is described here by Dr.Thomas, the senior Anesthetist in Jubilee Hospital, Trivandrum, south India. This patient has got a lesion on the vocal fold causing husky voice.)
Microlaryngoscopy Procedure Using Microdebrider:
The microdebrider, a powered rotary dissection device with suction assistance, is designed to remove hard and soft tissue as well as minimize trauma. When using powered instrumentation the surgeon should use the upmost caution in the larynx to avoid causing debilitating injury and scar with subsequent dysphonia.Meticulous technique, low oscillation speeds, and low wall suction are necessary to avoid injury to the overlying epithelium.
The Skimmer Blade for precise excision of small lesions in delicate areas.Â Blade length ranges from 18 to 45 cm in 2.9, 3.5, and 4.0 mm diameters to meet the needs of varying patient anatomies.
I think endoscopic resection of laryngeal lesions using the microdebrider is a safe, accurate and reliable method.