Immediate tissue destruction by vaporization unlike cryotherapy which needs many days to allows the tissue destroy by freezing and separately CO2 doesn’t cause pain, oedema and slough or minimal compared
Tag: MBBS Past Questions
what safety precautions should be taken to avoid LASER hazard?what safety precautions should be taken to avoid LASER hazard?
The principles of the safety are as follows: A laser may hit or damage object outside the target area and cause a fire, tissue damage or eye visual damage. The
Which LASER are effective in doing bone work?Which LASER are effective in doing bone work?
The following are different LASER which are effective for bone work: Holmium ϒAG Laser KTP /532 Diode Laser erbium ϒAG (no suitable delivery system exist for its use)
What are the different modes of tissue reaction by Laser? What is “swiftlase” and what are their indication in otorhinolaryngology?What are the different modes of tissue reaction by Laser? What is “swiftlase” and what are their indication in otorhinolaryngology?
The following are the modes of different tissue reaction by LASER. a. Photo-ablative Reactions: It occurs when molecule bonds are divided. e.g. ruby laser can split the molecular bonds of
Who built the first laser? What are the basic characteristics of laser beam?Who built the first laser? What are the basic characteristics of laser beam?
Theodore Maiman built the first laser in 1960.(Ruby laser) The following are the basic characteristics of laser beam: coherent→ the photons or waves travels in step or in phase c
What are the applications/ indication of LASER in otorhinolaryngology?What are the applications/ indication of LASER in otorhinolaryngology?
Stapedectomy and tympanomastoid surgery: CO2 laser KTP laser Argon laser Endonasal DCR: Holmium AG laser KTP laser 810 mm laser Nasal and sinus surgery including tumour surgery + telengectasia destruction
What are the possible complications/ hazards of embolization?What are the possible complications/ hazards of embolization?
The incidence of complication is 4% and half of these only have permanent neurological damage. Cranial Nerves palsies including blindness: more common with small particle. Stroke due to unrecognized spread
What are the catheters used in embolization?What are the catheters used in embolization?
Depending on the vessels catheterized: Trans-arterial Trans-venous Micro-catheters(0.02 /0.508mm) or small Flexible distal end Stiffer proximal end [table id=29 /]
What is the significance of preoperative embolization?What is the significance of preoperative embolization?
It helps to reduce bleeding during operation and facilitates surgery. It helps to reduce the operative time.