1.Asymptomatic Hearing Impairment Frequently Occurs in Early-Onset Parkinson's Disease
Kuldeep SHETTY ; Syam KRISHNAN ; Jissa Vinoda THULASEEDHARAN ; Manju MOHAN ; Asha KISHORE
Journal of Movement Disorders 2019;12(2):84-90
OBJECTIVE: Recent reports of hearing impairment in Parkinson's disease (PD) have suggested that auditory dysfunction could be a non-motor manifestation of PD. These reports were based on observations of elderly patients for whom presbycusis may, to some extent, have contributed to hearing dysfunction. Therefore, we aimed to explore the auditory functions in younger patients with PD. METHODS: We conducted a case-control study in a relatively younger (< 55 years of age at study time) population of PD patients and healthy volunteers to test whether auditory dysfunction is a significant non-motor dysfunction in PD. Pure tone audiometry (PTA) and brainstem evoked response audiometry (BERA) were performed in all participants. RESULTS: None of the patients or controls reported hearing deficits. Fifty-one patients with PD and 50 healthy volunteers who were age- and gender-matched to the patients participated. PTA-detected hearing impairment was found in 64.7% of patients and 28% of controls (p < 0.001) for both low-mid and/or high frequencies. Hearing impairment was more frequent in the younger subgroups of patients than age-matched controls, while the frequency of hearing impairment was similar in older groups of subjects. BERA was not different between patients and controls. CONCLUSION: Asymptomatic auditory dysfunction is a common non-motor manifestation of early-onset PD and more frequent in younger patients, indicating that it may be independent of aging. The mechanism underlying this dysfunction appears to be peripheral, although a central dysfunction cannot be ruled out based on the findings of this study.
Aged
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Aging
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Audiometry
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Audiometry, Evoked Response
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Brain Stem
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Case-Control Studies
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Healthy Volunteers
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Hearing Loss
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Hearing
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Humans
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Parkinson Disease
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Presbycusis
2.The Pandemic League of COVID-19: Korea Versus the United States, With Lessons for the Entire World
Alwin ISSAC ; Shine STEPHEN ; Jaison JACOB ; Vijay VR ; Rakesh Vadakkethil RADHAKRISHNAN ; Nadiya KRISHNAN ; Manju DHANDAPANI
Journal of Preventive Medicine and Public Health 2020;53(4):228-232
Coronavirus disease 2019 (COVID-19) is inflicting a brutal blow on humankind, and no corner of the world has been exempted from its wrath. This study analyzes the chief control measures and the distinctive features of the responses implemented by Korea and the United States to contain COVID-19 with the goal of extracting lessons that can be applied globally. Even though both nations reported their index cases on the same day, Korea succeeded in flattening the curve, with 10 752 cases as of April 28, 2020, whereas the outbreak skyrocketed in the United States, which had more than 1 million cases at the same time. The prudent and timely execution of control strategies enabled Korea to tame the spread of the virus, whereas the United States paid a major price for its delay, although it is too early to render a conclusive verdict. Information pertaining to the number of people infected with the virus and measures instituted by the government to control the spread of COVID-19 was retrieved from the United States Centers for Disease Control and Prevention and the Korea Centers for Disease Control and Prevention websites and press releases. Drawing lessons from both nations, it is evident that the resolution to the COVID-19 pandemic lies in the prudent usage of available resources, proactive strategic planning, public participation, transparency in information sharing, abiding by the regulations that are put into place, and how well the plan of action is implemented.
3.Scrutiny of COVID-19 response strategies among severely affected European nations
Shine STEPHEN ; Alwin ISSAC ; Rakesh Vadakkethil RADHAKRISHNAN ; Jaison JACOB ; VR VIJAY ; Sam JOSE ; SM AZHAR ; Anoop S. NAIR ; Nadiya KRISHNAN ; Rakesh SHARMA ; Manju DHANDAPANI
Osong Public Health and Research Perspectives 2021;12(4):203-214
Although the health care systems in Europe are considered the global benchmark, European nations were severely affected by the coronavirus disease 2019 (COVID-19) pandemic. This manuscript aimed to examine the strategies implemented to combat the COVID-19 pandemic by France, the United Kingdom, Spain, Italy, Germany, and Russia and their outcomes in terms of the number of cases, testing, and deaths. This is the first review of its kind that extensively analyzes the preparedness, mitigation, and response strategies against the COVID-19 pandemic adopted by these nations. This paper further suggests a strategic preparedness model for future pandemics. From the analysis, we found that a decentralized approach, prompt decision-making and timely execution, coordination between local health authorities, and public participation in the implementation of strategies could substantially reduce the case fatality rate. Nations with a high percentage of gross domestic product invested in the health sector, as well as more nurses, physicians, hospital beds, intensive care unit beds, and ventilators, better managed the pandemic. Instead, nations that postponed their pandemic response by delaying tracking, tracing, testing, quarantine, and lockdown were badly affected. The lessons learned from the present pandemic could be used as a guide to prepare for further pandemics.
4.Scrutiny of COVID-19 response strategies among severely affected European nations
Shine STEPHEN ; Alwin ISSAC ; Rakesh Vadakkethil RADHAKRISHNAN ; Jaison JACOB ; VR VIJAY ; Sam JOSE ; SM AZHAR ; Anoop S. NAIR ; Nadiya KRISHNAN ; Rakesh SHARMA ; Manju DHANDAPANI
Osong Public Health and Research Perspectives 2021;12(4):203-214
Although the health care systems in Europe are considered the global benchmark, European nations were severely affected by the coronavirus disease 2019 (COVID-19) pandemic. This manuscript aimed to examine the strategies implemented to combat the COVID-19 pandemic by France, the United Kingdom, Spain, Italy, Germany, and Russia and their outcomes in terms of the number of cases, testing, and deaths. This is the first review of its kind that extensively analyzes the preparedness, mitigation, and response strategies against the COVID-19 pandemic adopted by these nations. This paper further suggests a strategic preparedness model for future pandemics. From the analysis, we found that a decentralized approach, prompt decision-making and timely execution, coordination between local health authorities, and public participation in the implementation of strategies could substantially reduce the case fatality rate. Nations with a high percentage of gross domestic product invested in the health sector, as well as more nurses, physicians, hospital beds, intensive care unit beds, and ventilators, better managed the pandemic. Instead, nations that postponed their pandemic response by delaying tracking, tracing, testing, quarantine, and lockdown were badly affected. The lessons learned from the present pandemic could be used as a guide to prepare for further pandemics.
5.Antiplatelet Use Prior to Anticoagulant Initiation in Patients With Atrial Fibrillation-Related Ischemic Stroke: An ELAN Trial Analysis
Alexandros A. POLYMERIS ; Masatoshi KOGA ; Daniel STRBIAN ; Adhiyaman VEDAMURTHY ; Manju KRISHNAN ; Mattia BRANCA ; Thomas HORVATH ; Martina GOELDLIN ; Gek SHIM ; Christoph GUMBINGER ; Liqun ZHANG ; Espen Saxhaug KRISTOFFERSEN ; Philippe DESFONTAINES ; Peter VANACKER ; Angelika ALONSO ; Sven POLI ; Ana Paiva NUNES ; Nicoletta G. CARACCIOLO ; Markus KNEIHSL ; Timo KAHLES ; Daria GIUDICI ; Silja RÄTY ; Marjaana TIAINEN ; Jesse DAWSON ; Urs FISCHER ;
Journal of Stroke 2025;27(2):217-227
Background:
and Purpose Antiplatelets are often used before direct oral anticoagulant (DOACs) initiation after an acute ischemic stroke related to atrial fibrillation (AF), but the evidence is weak. Here, we explored the risks and benefits of this approach.
Methods:
A post-hoc analysis of ELAN (Early versus Late Initiation of Direct Oral Anticoagulants in Post-ischemic Stroke Patients with Atrial Fibrillation) trial data (NCT03148457) was conducted to compare the risk of recurrent ischemic stroke, systemic embolism, major bleeding (extracranial or intracranial hemorrhage [ICH]), and vascular death within 30 days (as a composite and as individual outcomes) in participants treated with and without antiplatelets before DOAC initiation after an AF-associated ischemic stroke. We used both logistic and cause-specific Cox proportional hazards regression in inverse probability of treatment weighted models to account for confounding. We calculated the net benefit of antiplatelet use by subtracting the weighted rate of excess bleeding events attributable to antiplatelets from the rate of excess ischemic events possibly prevented by antiplatelets.
Results:
Among 2,013 participants (median age 77 years, 45.5% female), 1,090 (54.1%) used antiplatelets, and 70 (3.5%) experienced the composite outcome. Antiplatelet use was not associated with the composite outcome (inverse probability of treatment weighted odds ratio [ORweighted] 1.06, 95% confidence interval [CI] 0.66–1.72; inverse probability of treatment weighted hazard ratio [HRweighted] 1.06, 95% CI 0.65–1.72), but showed a lower risk of ischemic stroke recurrence (ORweighted 0.58 [0.30–1.08], HRweighted 0.57 [0.30–1.10]), and a higher risk of major bleeding (ORweighted 1.76 [0.56–6.63], HRweighted 1.88 [0.56–6.39]). Its net benefit was +0.57 (95% CI -1.25 to +2.34) to +0.30 (-1.82 to +2.27) weighted events/100 person-months for ICH weights 1.5 to 3.1.
Conclusion
Following an AF-associated ischemic stroke, we found a lower risk of recurrence and no signs of net harm with antiplatelet use before DOAC initiation, despite an increased risk of bleeding.
6.Antiplatelet Use Prior to Anticoagulant Initiation in Patients With Atrial Fibrillation-Related Ischemic Stroke: An ELAN Trial Analysis
Alexandros A. POLYMERIS ; Masatoshi KOGA ; Daniel STRBIAN ; Adhiyaman VEDAMURTHY ; Manju KRISHNAN ; Mattia BRANCA ; Thomas HORVATH ; Martina GOELDLIN ; Gek SHIM ; Christoph GUMBINGER ; Liqun ZHANG ; Espen Saxhaug KRISTOFFERSEN ; Philippe DESFONTAINES ; Peter VANACKER ; Angelika ALONSO ; Sven POLI ; Ana Paiva NUNES ; Nicoletta G. CARACCIOLO ; Markus KNEIHSL ; Timo KAHLES ; Daria GIUDICI ; Silja RÄTY ; Marjaana TIAINEN ; Jesse DAWSON ; Urs FISCHER ;
Journal of Stroke 2025;27(2):217-227
Background:
and Purpose Antiplatelets are often used before direct oral anticoagulant (DOACs) initiation after an acute ischemic stroke related to atrial fibrillation (AF), but the evidence is weak. Here, we explored the risks and benefits of this approach.
Methods:
A post-hoc analysis of ELAN (Early versus Late Initiation of Direct Oral Anticoagulants in Post-ischemic Stroke Patients with Atrial Fibrillation) trial data (NCT03148457) was conducted to compare the risk of recurrent ischemic stroke, systemic embolism, major bleeding (extracranial or intracranial hemorrhage [ICH]), and vascular death within 30 days (as a composite and as individual outcomes) in participants treated with and without antiplatelets before DOAC initiation after an AF-associated ischemic stroke. We used both logistic and cause-specific Cox proportional hazards regression in inverse probability of treatment weighted models to account for confounding. We calculated the net benefit of antiplatelet use by subtracting the weighted rate of excess bleeding events attributable to antiplatelets from the rate of excess ischemic events possibly prevented by antiplatelets.
Results:
Among 2,013 participants (median age 77 years, 45.5% female), 1,090 (54.1%) used antiplatelets, and 70 (3.5%) experienced the composite outcome. Antiplatelet use was not associated with the composite outcome (inverse probability of treatment weighted odds ratio [ORweighted] 1.06, 95% confidence interval [CI] 0.66–1.72; inverse probability of treatment weighted hazard ratio [HRweighted] 1.06, 95% CI 0.65–1.72), but showed a lower risk of ischemic stroke recurrence (ORweighted 0.58 [0.30–1.08], HRweighted 0.57 [0.30–1.10]), and a higher risk of major bleeding (ORweighted 1.76 [0.56–6.63], HRweighted 1.88 [0.56–6.39]). Its net benefit was +0.57 (95% CI -1.25 to +2.34) to +0.30 (-1.82 to +2.27) weighted events/100 person-months for ICH weights 1.5 to 3.1.
Conclusion
Following an AF-associated ischemic stroke, we found a lower risk of recurrence and no signs of net harm with antiplatelet use before DOAC initiation, despite an increased risk of bleeding.
7.Antiplatelet Use Prior to Anticoagulant Initiation in Patients With Atrial Fibrillation-Related Ischemic Stroke: An ELAN Trial Analysis
Alexandros A. POLYMERIS ; Masatoshi KOGA ; Daniel STRBIAN ; Adhiyaman VEDAMURTHY ; Manju KRISHNAN ; Mattia BRANCA ; Thomas HORVATH ; Martina GOELDLIN ; Gek SHIM ; Christoph GUMBINGER ; Liqun ZHANG ; Espen Saxhaug KRISTOFFERSEN ; Philippe DESFONTAINES ; Peter VANACKER ; Angelika ALONSO ; Sven POLI ; Ana Paiva NUNES ; Nicoletta G. CARACCIOLO ; Markus KNEIHSL ; Timo KAHLES ; Daria GIUDICI ; Silja RÄTY ; Marjaana TIAINEN ; Jesse DAWSON ; Urs FISCHER ;
Journal of Stroke 2025;27(2):217-227
Background:
and Purpose Antiplatelets are often used before direct oral anticoagulant (DOACs) initiation after an acute ischemic stroke related to atrial fibrillation (AF), but the evidence is weak. Here, we explored the risks and benefits of this approach.
Methods:
A post-hoc analysis of ELAN (Early versus Late Initiation of Direct Oral Anticoagulants in Post-ischemic Stroke Patients with Atrial Fibrillation) trial data (NCT03148457) was conducted to compare the risk of recurrent ischemic stroke, systemic embolism, major bleeding (extracranial or intracranial hemorrhage [ICH]), and vascular death within 30 days (as a composite and as individual outcomes) in participants treated with and without antiplatelets before DOAC initiation after an AF-associated ischemic stroke. We used both logistic and cause-specific Cox proportional hazards regression in inverse probability of treatment weighted models to account for confounding. We calculated the net benefit of antiplatelet use by subtracting the weighted rate of excess bleeding events attributable to antiplatelets from the rate of excess ischemic events possibly prevented by antiplatelets.
Results:
Among 2,013 participants (median age 77 years, 45.5% female), 1,090 (54.1%) used antiplatelets, and 70 (3.5%) experienced the composite outcome. Antiplatelet use was not associated with the composite outcome (inverse probability of treatment weighted odds ratio [ORweighted] 1.06, 95% confidence interval [CI] 0.66–1.72; inverse probability of treatment weighted hazard ratio [HRweighted] 1.06, 95% CI 0.65–1.72), but showed a lower risk of ischemic stroke recurrence (ORweighted 0.58 [0.30–1.08], HRweighted 0.57 [0.30–1.10]), and a higher risk of major bleeding (ORweighted 1.76 [0.56–6.63], HRweighted 1.88 [0.56–6.39]). Its net benefit was +0.57 (95% CI -1.25 to +2.34) to +0.30 (-1.82 to +2.27) weighted events/100 person-months for ICH weights 1.5 to 3.1.
Conclusion
Following an AF-associated ischemic stroke, we found a lower risk of recurrence and no signs of net harm with antiplatelet use before DOAC initiation, despite an increased risk of bleeding.
8.Impact of Stroke Severity and Vascular Risk Factors on Early Versus Late Anticoagulation in Patients With Stroke and Atrial Fibrillation
Masatoshi KOGA ; Mattia BRANCA ; Daniel STRBIAN ; Takeshi YOSHIMOTO ; Kanta TANAKA ; Sohei YOSHIMURA ; Yusuke YAKUSHIJI ; Shigeru FUJIMOTO ; Adhiyaman VEDAMURTHY ; Manju KRISHNAN ; Marjaana TIAINEN ; Jochen VEHOFF ; Gerli SIBOLT ; Kosuke MATSUZONO ; Caterina KULYK ; Silja RÄTY ; Peter SLADE ; Alexander SALERNO ; Dimitri HEMELSOET ; Thomas HORVATH ; Takenobu KUNIEDA ; Makoto NAKAJIMA ; Hisanao AKIYAMA ; Yasuyuki IGUCHI ; Manabu INOUE ; Masafumi IHARA ; Kazunori TOYODA ; David SEIFFGE ; Martina GOELDLIN ; Jesse DAWSON ; Urs FISCHER
Journal of Stroke 2025;27(2):284-288
9.Impact of Stroke Severity and Vascular Risk Factors on Early Versus Late Anticoagulation in Patients With Stroke and Atrial Fibrillation
Masatoshi KOGA ; Mattia BRANCA ; Daniel STRBIAN ; Takeshi YOSHIMOTO ; Kanta TANAKA ; Sohei YOSHIMURA ; Yusuke YAKUSHIJI ; Shigeru FUJIMOTO ; Adhiyaman VEDAMURTHY ; Manju KRISHNAN ; Marjaana TIAINEN ; Jochen VEHOFF ; Gerli SIBOLT ; Kosuke MATSUZONO ; Caterina KULYK ; Silja RÄTY ; Peter SLADE ; Alexander SALERNO ; Dimitri HEMELSOET ; Thomas HORVATH ; Takenobu KUNIEDA ; Makoto NAKAJIMA ; Hisanao AKIYAMA ; Yasuyuki IGUCHI ; Manabu INOUE ; Masafumi IHARA ; Kazunori TOYODA ; David SEIFFGE ; Martina GOELDLIN ; Jesse DAWSON ; Urs FISCHER
Journal of Stroke 2025;27(2):284-288
10.Impact of Stroke Severity and Vascular Risk Factors on Early Versus Late Anticoagulation in Patients With Stroke and Atrial Fibrillation
Masatoshi KOGA ; Mattia BRANCA ; Daniel STRBIAN ; Takeshi YOSHIMOTO ; Kanta TANAKA ; Sohei YOSHIMURA ; Yusuke YAKUSHIJI ; Shigeru FUJIMOTO ; Adhiyaman VEDAMURTHY ; Manju KRISHNAN ; Marjaana TIAINEN ; Jochen VEHOFF ; Gerli SIBOLT ; Kosuke MATSUZONO ; Caterina KULYK ; Silja RÄTY ; Peter SLADE ; Alexander SALERNO ; Dimitri HEMELSOET ; Thomas HORVATH ; Takenobu KUNIEDA ; Makoto NAKAJIMA ; Hisanao AKIYAMA ; Yasuyuki IGUCHI ; Manabu INOUE ; Masafumi IHARA ; Kazunori TOYODA ; David SEIFFGE ; Martina GOELDLIN ; Jesse DAWSON ; Urs FISCHER
Journal of Stroke 2025;27(2):284-288