Dear Friends,
Wish you all a Very Happy Independence Day.Uploading The Power Point Presentation of Ototoxicity in a VDO format along with the relevant Audiograms.
TC and Peruse,
Amol.
Dear Rohan,
A few more questions as a follow-up to the earlier quiz -
1) What is Ball-Valve Effect?
2) How many parts does a classical Antro-choanal Polyp have?
3) What is that shape called?
4) Which is the largest part and why?
Wish you all a Very Happy Independence Day.Uploading The Power Point Presentation of Ototoxicity in a VDO format along with the relevant Audiograms.
TC and Peruse,
Amol.
Dear Rohan,
A few more questions as a follow-up to the earlier quiz -
1) What is Ball-Valve Effect?
2) How many parts does a classical Antro-choanal Polyp have?
3) What is that shape called?
4) Which is the largest part and why?
1)balll valve effect is the free flow of a gas or fluid in one direction coupled with the partial or complete obstruction to flow in the opposite direction, which is classically seen where a mass is confined to a wall or lumen by a stalk
ReplyDelete2)an ac polyp has 3 parts namely antral choanal and nasal
3) the shape is called dumb bell shaped or trilobed
4)the choanal part is the largest because
1. The accessory ostium through which the polyp gets out of the maxillary antrum is present posteriorly.
2. The inspiratory air current is more powerful than the expiratory air current thereby pushes the polyp posteriorly.
3. The natural slope of the nasal cavity is directed posteriorly, hence the polyp always slips posteriorly.
4. The cilia of the ciliated columnar epithelial cells lining the nasal cavity always beats anteroposteriorly pushing the polyp behind.