Laryngoscopes Tracheal intubation

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laryngoscope handles assortment of miller blades (large adult, small adult, child, infant , newborn)



laryngoscope handle assortment of macintosh blades (large adult, small adult, child, infant , newborn)


the vast majority of tracheal intubations involve use of viewing instrument of 1 type or another. modern conventional laryngoscope consists of handle containing batteries power light , set of interchangeable blades, either straight or curved. device designed allow laryngoscopist directly view larynx. due widespread availability of such devices, technique of blind intubation of trachea practiced today, although may still useful in emergency situations, such natural or man-made disasters. in prehospital emergency setting, digital intubation may necessitated if patient in position makes direct laryngoscopy impossible. example, digital intubation may used paramedic if patient entrapped in inverted position in vehicle after motor vehicle collision prolonged extrication time.


the decision use straight or curved laryngoscope blade depends partly on specific anatomical features of airway, , partly on personal experience , preference of laryngoscopist. macintosh blade used curved laryngoscope blade, while miller blade popular style of straight blade. both miller , macintosh laryngoscope blades available in sizes 0 (infant) through 4 (large adult). there many other styles of straight , curved blades, accessories such mirrors enlarging field of view , ports administration of oxygen. these specialty blades designed use anesthetists , otolaryngologists, commonly in operating room.


fiberoptic layngoscopes have become increasingly available since 1990s. in contrast conventional laryngoscope, these devices allow laryngoscopist indirectly view larynx. provides significant advantage in situations operator needs see around acute bend in order visualize glottis, , deal otherwise difficult intubations. video laryngoscopes specialized fiberoptic layngoscopes use digital video camera sensor allow operator view glottis , larynx on video monitor. other noninvasive devices can employed assist in tracheal intubation laryngeal mask airway (used conduit endotracheal tube placement) , airtraq.








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