ABSTRACT
The Trans-labrynthine approach, through Otic capsule gives direct approach to the cerebellopontine angle (CPA) and internal auditory meatus (IAM) with preservation of the facial nerve. Mastering the approach to IAM in a cadaver with anatomical landmarks is important to the budding Otologist & Neurotologist to approach the CPA with functional preservation of the Facial nerve in patients with Vestibular Schwannoma & other procedures. Transitioning surgical skills and anatomic knowledge from surgical anatomy textbooks and laboratory training to the operative room is challenging. 30 adult wet human cadaveric temporal bones were studied by performing Trans-labrynthine approach to the IAM by using ZEISS microscope in a temporal bone dissection lab. Photographs were taken by HD phone camera, imported into computer & labeled the anatomical landmarks. Wide exposure & 3D visualization of complex anatomical landmarks were noted in each step by step approach from basic to advanced procedure of Trans-labrynthine approach to IAM. The step by step approach to the IAM from basic to advanced procedure in a cadaveric temporal bone offers great orientation & opportunity to become a master of the complex surgical anatomy of IAM and in acquiring a 3D orientation of the critical structures.
ABSTRACT
To correlate Saccharin clearance time before and after endoscopic sinus surgery (ESS) in chronic maxillary sinusitis patients. Hospital based prospective study done in the department of otorhinolaryngology at our tertiary care hospital from January 2017 to December 2017. We selected 40 patients based on inclusion and exclusion criteria. Saccharin clearance time was measured by the subjective perception of sweet taste following placement of saccharin pellet over the anterior end of inferior turbinate. It was measured preoperatively and postoperatively after 3 months of ESS and the values are compared with normal uninvolved sinuses of the patients. Out of 40 patients, 26 were male and 14 were female. Normal Saccharin Clearance Time was found to be 9.50 and 9.89 min with a standard deviation of 2.76 and 2.62 on the left and right side respectively. There was no significant difference between right and left side mucociliary clearance values. The respective mean preoperative and postoperative mucociliary clearance values of right and left side together were 39.5 min and 17.6 min among unilateral maxillary sinusitis patients, 49.69 min and 20.87 min among unilateral CRS with polyposis patients, 69.42 min and 25.97 min among bilateral maxillary sinusitis patients, 63.71 min and 24.21 min among CRS with bilateral polyposis patients. ESS not only treats the pathology of paranasal sinuses but also helps in returning the normal mucociliary function.
