laryngoscopy


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Laryngoscopy

 

Definition

Laryngoscopy refers to a procedure used to view the inside of the larynx (the voice box).

Description

The purpose and advantage of seeing inside the larynx is to detect tumors, foreign bodies, nerve or structural injury, or other abnormalities. Two methods allow the larynx to be seen directly during the examination. In one, a flexible tube with a fiber-optic device is threaded through the nasal passage and down into the throat. The other method uses a rigid viewing tube passed directly from the mouth, through the throat, into the larynx. A light and lens affixed to the endoscope are used in both methods. The endoscopic tube may also be equipped to suction debris or remove material for biopsy. Bronchoscopy is a similar, but more extensive procedure in which the tube is continued through the larynx, down into the trachea and bronchi.

Preparation

Laryngoscopy is done in the hospital with a local anesthetic spray to minimize discomfort and suppress the gag reflex. Patients are requested not to eat for several hours before the examination.

Aftercare

If the throat is sore, soothing liquids or lozenges will probably relieve any temporary discomfort.

Risks

This procedure carries no serious risks, although the patient may experience soreness of the throat or cough up small amounts of blood until the irritation subsides.

Normal results

A normal result would be the absence of signs of disease or damage.

Abnormal results

An abnormal finding, such as a tumor or an object lodged in the tissue, would either be removed or described for further medical attention.

Key terms

Endoscopic tube — a tube that is inserted into a hollow organ permitting a physician to see the inside it.

laryngoscopy

 [lar″ing-gos´kah-pe]
visual examination of the larynx with a laryngoscope. With direct visualization, the patient is given a mild sedative to promote relaxation, because the procedure, though not uncomfortable, may be frightening and exhausting. Immediately before insertion of the laryngoscope, the throat is anesthetized locally with cocaine spray. Following the procedure, fluids and foods are withheld until the effects of the anesthetic have worn off and the gag reflex has returned. Visualization may also be indirect, which means examination is done by observation of the reflection of the larynx in a laryngeal mirror. adj., adj laryngoscop´ic.

lar·yn·gos·co·py

(lar'ing-gos'kŏ-pē),
Inspection of the larynx by means of the laryngoscope.

laryngoscopy

(lăr′ĭn-gŏs′kə-pē)
n.
Examination of the larynx by means of a laryngoscope.

laryngoscopy  

ENT Examination of the larynx, either with a mirror–indirect laryngoscopy or with a laryngoscope–direct laryngoscopy; a diagnostic and/or therapeutic procedure in which a laryngoscope is passed through the larynx to detect lesions, strictures or foreign bodies. See Larynx.

lar·yn·gos·co·py

(lar'in-gos'kŏ-pē)
Inspection of the larynx by means of the laryngoscope.

laryngoscopy

Examination of the LARYNX either directly by extending the recumbent subject's neck and using a rigid metal instrument, called a laryngoscope, to depress the tongue, or indirectly by way of an angled mirror held behind the back of the tongue. Direct laryngoscopy allows BIOPSY of the vocal cords and removal of polyps, nodules or foreign bodies.

lar·yn·gos·co·py

(lar'in-gos'kŏ-pē)
Inspection of the larynx by means of the laryngoscope.
References in periodicals archive ?
Clonidine premedication, thus, produces sedation and blunts the stress response to laryngoscopy and intubation.
Higher Cormack-Lehane and POGO scores were achieved using the McGrath VL compared to the Macintosh DL, meaning that video laryngoscopy resulted in better glottic view than direct laryngoscopy in this study.
Patients in the MG group did not experience any SBP elevation caused by laryngoscopy. SBP data are showed in Table 3.
Reflex circulatory responses to direct laryngoscopy and tracheal intubation performed during anesthesia.
Besides, it has been shown that the change in arterial pressure usually occurs the following laryngoscopy while the maximum increase in heart rate can occur during endotracheal intubation31.
In this study, we aimed to find out the better premedication agent between gabapentin and gabapentin-labetalol combinations for attenuation of stress response to laryngoscopy and endotracheal intubation.
Of all, 19(79.2%) patients underwent direct laryngoscopy and 5(16.7%) required oesophagoscopy.
The incidence of difficult laryngoscopy (Cormack and Lehane grades III & IV) difficult intubation is 12.3%, and 9%, respectively, with no patient having difficult mask ventilation.
A suspected hematoma should be confirmed by an otolaryngologist via indirect laryngoscopy or flexible nasal endoscopy.
The ergonomics of laryngoscopy and tracheal intubation, which involve the physical interaction between the operator and the working environment (equipment) and the underlying psychological and cognitive elements responsible for such an interaction, constitute the subject matter of the research at issue.