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Your search keyword '"Shetty, Ajoy Prasad"' showing total 541 results
Start Over Author "Shetty, Ajoy Prasad" Publication Type Academic Journals
541 results on '"Shetty, Ajoy Prasad"'

32. Current trends in intraoperative neurophysiological monitoring among Asia–Pacific countries: an Asia–Pacific Spine Society survey.

Author

Shigematsu, Hideki, Yasuda, Akimasa, Tangente, Ronald, Chan, Chris Yin Wei, Shetty, Ajoy Prasad, Cheung, Jason Pui Yin, Hai, Yong, Sakai, Daisuke, Cho, Kyu-Jung, Chen, Chih-Wei, Liu, Gabriel, Wiguna, I Gusti Lanang Ngurah Agung Artha, Hsu, Brian, and Kwan, Mun Keong

Subjects
SURGICAL complications, SOMATOSENSORY evoked potentials, SURGICAL excision, SPINAL cord surgery, SPINAL cord tumors, NEUROPHYSIOLOGIC monitoring, SPINAL surgery
Abstract

Study Design: A prospective web-based survey. Purpose: Although intraoperative neurophysiological monitoring (IONM) is critical in spine surgery, its usage is largely based on the surgeon's discretion, and studies on its usage trends in Asia–Pacific countries are lacking. This study aimed to examine current trends in IONM usage in Asia–Pacific countries. Overview of Literature: IONM is an important tool for minimizing neurological complications and detecting spinal cord injuries after spine surgery. IONM can be performed using several modalities, such as transcranial electrical stimulation-muscle evoked potentials (Tc-MEP) and somatosensory evoked potentials (SEP). Methods: Spine surgeons of the Asia–Pacific Spine Society were asked to respond to a web-based survey on IONM. The questionnaire covered various aspects of IONM, including its common modality, Tc-MEP details, necessities for consistent use, and recommended modalities in major spine surgeries and representative surgical procedures. Results: Responses were received from 193 of 626 spine surgeons. Among these respondents, 177 used IONM routinely. Among these 177 respondents, 17 mainly used SEP, whereas the majority favored Tc-MEPs. Although a >50% decrease is the commonly used alarm point in Tc-MEP, half of the Tc-MEP users had no protocols planned for such scenarios. Moreover, half of the Tc-MEP users experienced complications, with bite injuries being the most common. Most respondents strongly recommended IONM in deformity surgery for pediatric and adult populations and tumor resection surgery for intramedullary spinal cord tumors. Conversely, IONM was the least recommended in lumbar spinal canal stenosis surgery. Conclusions: Spine surgeons in Asia–Pacific countries favored IONM use, indicating widespread routine utilization. Tc-MEP was the predominant modality for IONM, followed by SEPs. [ABSTRACT FROM AUTHOR]

Published
2024
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47. A Whole Spine MRI Based Study of the Prevalence, Associated Disc Degeneration and Anatomical Correlations of Lumbosacral Transitional Vertebra.

Author

Bhagchandani, Chintan, Murugan, Chandhan, Jakkepally, Sridhar, Shetty, Ajoy Prasad, Kanna, Rishi Mugesh, and Rajasekaran, Shanmuganathan

Subjects
RENAL artery, ABDOMINAL aorta, ANATOMICAL variation, VERTEBRAE, CONUS
Abstract

Study Design: Retrospective cohort study. Objective: Lumbosacral transitional vertebra (LSTV) results in numerical alterations of the lumbar and sacral segments. Literature concerning true prevalence, associated disc degeneration, and variation in numerous anatomical landmarks concerning LSTV is lacking. Methods: This is a retrospective cohort study. The prevalence of LSTV was determined in whole spine MRIs of 2011 poly-trauma patients. LSTV was identified as sacralization (LSTV-S) or lumbarization (LSTV-L) and further sub-classified into Castellvi's and O'Driscoll's type respectively. Disc degeneration was evaluated using Pfirmann grading. Variation in important anatomical landmarks was also analysed. Results: Prevalence of LSTV was 11.6% with 82% having LSTV-S. Castellvi's type 2A and O'Driscoll type 4 were the commonest sub-types. LSTV patients demonstrated considerably advanced disc degeneration. The median termination level of conus medullaris (TLCM) in non- LSTV and LSTV-L groups was at middle L1 (48.1% and 40.2%) while in the LSTV-S group, it was at upper L1 (47.2%). The median level of right renal artery (RRA) in non- LSTV patients was at middle L1 in 40.0% of individuals while in the LSTV-L and LSTV-S groups, it was at upper L1 level in 35.2% and 56.2% respectively. The median level of abdominal aortic bifurcation (AA) in non-LSTV and LSTV-S patients was at middle L4 in 83.3% and 52.04% respectively. However, in the LSTV-L group, the most common level was middle L5 (53.6%). Conclusion: The overall prevalence of LSTV was 11.6%, with sacralization accounting for more than 80%. LSTV is associated with disc degeneration and a variation in the levels of important anatomical landmarks. [ABSTRACT FROM AUTHOR]

Published
2024
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