Browsing by Author "Pastore, Antonia"

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    Bilateral Vestibulopathy. What Can the Video Head Impulse Test Tell Us?
    (2025) Waissbluth Abarca, Sofía; Viñuela Morales, Macarena Rocío; Escobedo Durán, Emilia José; Pastore, Antonia; Novoa, Iván
    Bilateral vestibulopathy (BV) is a known cause of chronic vestibular syndrome. With the video head impulse test (VHIT), we can now evaluate all six semicircular canals independently and establish BV subgroups based on canal gain patterns. Background/objectives: To assess canal gain patterns for BV with VHIT, and evaluate subgroups with regard to sex, age, and hearing loss. Methods: A retrospective chart review was performed of all patients who underwent a VHIT between January 2021 and July 2024. Patients with decreased lateral canal gains, bilaterally, were included. Results of canal gains, VHIT patterns, audiometry, and videonystagmography (VNG) results were reviewed. Results: 101 cases were included. Patients were 75.5 ± 13.1 years old and 64.4% were women.Various VHIT patterns were observed; the most frequent being decreased canal gains across all six canals (44.6%), followed by a mix of canals with decreased gains with no clear pattern (34.7%). Decreased gains limited to the lateral canals were rare. We did not observe any significant difference between subgroups with regard to gender or age. Concomitant hearing loss was common (89.6%). A trend was noted, suggesting that severity of hearing loss increased with the number of affected canals. An abnormal VNG test was common (73.3%).
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    Bilateral Vestibulopathy. What Can the Video Head Impulse Test Tell Us?
    (2025) Waissbluth Abarca, Sofía; Viñuela Morales, Macarena Rocío; Escobedo Durán, Emilia José; Pastore, Antonia; Novoa, Iván
    Bilateral vestibulopathy (BV) is a known cause of chronic vestibular syndrome. With the video head impulse test (VHIT), we can now evaluate all six semicircular canals independently and establish BV subgroups based on canal gain patterns. Background/objectives: To assess canal gain patterns for BV with VHIT, and evaluate subgroups with regard to sex, age, and hearing loss. Methods: A retrospective chart review was performed of all patients who underwent a VHIT between January 2021 and July 2024. Patients with decreased lateral canal gains, bilaterally, were included. Results of canal gains, VHIT patterns, audiometry, and videonystagmography (VNG) results were reviewed. Results: 101 cases were included. Patients were 75.5 ± 13.1 years old and 64.4% were women.Various VHIT patterns were observed; the most frequent being decreased canal gains across all six canals (44.6%), followed by a mix of canals with decreased gains with no clear pattern (34.7%). Decreased gains limited to the lateral canals were rare. We did not observe any significant difference between subgroups with regard to gender or age. Concomitant hearing loss was common (89.6%). A trend was noted, suggesting that severity of hearing loss increased with the number of affected canals. An abnormal VNG test was common (73.3%).
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    Risk factors for readmission after a cholecystectomy: a case-control study
    (2024) Garcia, Daniel; Pastore, Antonia; Rodriguez, Javier; Crovari, Fernando; Cerda, Jaime; Rebolledo, Patricia; Achurra, Pablo; Vinuela, Eduardo; Martinez, Jorge; Dib, Martin; Briceno, Eduardo
    Objective: The aim of this study was to assess the risk factors associated with 30 -day hospital readmissions after a cholecystectomy. Methods: We conducted a case-control study, with data obtained from UC-Christus from Santiago, Chile. All patients who underwent a cholecystectomy between January 2015 and December 2019 were included in the study. We identified all patients readmitted after a cholecystectomy and compared them with a randomized control group. Univariate and multivariate analyses were conducted to identify risk factors. Results: Of the 4866 cholecystectomies performed between 2015 and 2019, 79 patients presented 30 -day hospital readmission after the surgical procedure (1.6%). We identified as risk factors for readmission in the univariate analysis the presence of a solid tumor at the moment of cholecystectomy (OR = 7.58), high pre -operative direct bilirubin (OR = 2.52), high pre -operative alkaline phosphatase (OR = 3.25), emergency admission (OR = 2.04), choledocholithiasis on admission (OR = 4.34), additional surgical procedure during the cholecystectomy (OR = 4.12), and post -operative complications. In the multivariate analysis, the performance of an additional surgical procedure during cholecystectomy was statistically significant (OR = 4.24). Conclusion: Performing an additional surgical procedure during cholecystectomy was identified as a risk factor associated with 30 -day hospital readmission.