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Dive into the research topics where Vaidyanathan Ganapathy is active.

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Featured researches published by Vaidyanathan Ganapathy.


Clinical Interventions in Aging | 2015

Caregiver burden, productivity loss, and indirect costs associated with caring for patients with poststroke spasticity.

Vaidyanathan Ganapathy; Glenn D. Graham; Marco DiBonaventura; Patrick Gillard; Amir Goren; Richard D. Zorowitz

Objective Many stroke survivors experience poststroke spasticity and the related inability to perform basic activities, which necessitates patient management and treatment, and exerts a considerable burden on the informal caregiver. The current study aims to estimate burden, productivity loss, and indirect costs for caregivers of stroke survivors with spasticity. Methods Internet survey data were collected from 153 caregivers of stroke survivors with spasticity including caregiving time and difficulty (Oberst Caregiver Burden Scale), Work Productivity and Activity Impairment measures, and caregiver and patient characteristics. Fractional logit models examined predictors of work-related restriction, and work losses were monetized (2012 median US wages). Results Mean Oberst Caregiver Burden Scale time and difficulty scores were 46.1 and 32.4, respectively. Employed caregivers (n=71) had overall work restriction (32%), absenteeism (9%), and presenteeism (27%). Caregiver characteristics, lack of nursing home coverage, and stroke survivors’ disability predicted all work restriction outcomes. The mean total lost-productivity cost per employed caregiver was US


American Journal of Health-system Pharmacy | 2018

Treatment patterns for patients hospitalized with chronic obstructive pulmonary disease

Alpesh Amin; Vamsi Bollu; Michael D. Stensland; Logan Netzer; Vaidyanathan Ganapathy

835 per month (>


American Journal of Health-system Pharmacy | 2018

Antibiotic use in patients hospitalized with chronic obstructive pulmonary diseaseAntibiotic use in patients hospitalized with chronic obstructive pulmonary disease

Eric Dietrich; Alpesh Amin; Kyle A. Davis; Vaidyanathan Ganapathy; Logan Netzer

10,000 per year; 72% attributable to presenteeism). Conclusion These findings demonstrate the substantial burden of caring for stroke survivors with spasticity illustrating the societal and economic impact of stroke that extends beyond the stroke survivor.


Patient Preference and Adherence | 2017

Confidence in correct inhaler technique and its association with treatment adherence and health status among US patients with chronic obstructive pulmonary disease

Alpesh Amin; Vaidyanathan Ganapathy; Adam Roughley; Mark Small

Purpose. Medication treatment patterns for chronic obstructive pulmonary disease (COPD) in inpatient settings were examined, as were the characteristics of patients treated with long‐acting bronchodilators (LABDs) during hospitalization. Methods. This retrospective study was conducted using inpatient administrative data from hospitals and medical centers nationwide. All patients discharged from the hospital from January 1, 2010, through December 31, 2012, who were at least 40 years of age, had a primary discharge diagnosis of COPD or a secondary diagnosis of COPD with a primary diagnosis of a respiratory condition, and treatment with a bronchodilator were included. Treatment patterns were described for inpatient use of medications, including short‐acting β‐agonists (SABAs), long‐acting β‐agonists (LABAs), short‐acting muscarinic antagonists (SAMAs), and long‐acting muscarinic antagonists. Logistic regression predicted characteristics of patients receiving LABDs. Results. Only 5.5% of patients did not receive an SABA during the hospitalization: 71.7% received a single‐product SABA, and 46.4% received an SABA–SAMA combination product, with some patients switching between or using SABA and SABA–SAMA combinations concurrently. Most patients (80.9%) received systemic corticosteroids, and nearly all (91.6%) were treated with antibiotics. Only 52.2% of patients received LABDs (39.3% LABAs). Patients treated with LABDs were more likely to have a primary COPD diagnosis, prior hospitalizations, spirometry use, and fewer comorbidities. Conclusion. A review of COPD‐related inpatient admissions found that the majority of patients received the primary recommended treatments for acute exacerbations of COPD (SABAs, systemic corticosteroids, and antibiotics). However, maintenance therapy had been initiated for only about half of patients before discharge.


International Journal of Chronic Obstructive Pulmonary Disease | 2017

Health resource utilization for inpatients with COPD treated with nebulized arformoterol or nebulized formoterol

Vaidyanathan Ganapathy; Michael D. Stensland

We read with interest the report by Amin and colleagues[1][1] outlining treatment patterns for patients admitted for an acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The authors noted that the majority of patients included in their analysis received appropriate guideline-


Journal of Pain and Symptom Management | 2016

OnabotulinumtoxinA Improves Pain in Patients With Post-Stroke Spasticity: Findings From a Randomized, Double-Blind, Placebo-Controlled Trial

Joerg Wissel; Vaidyanathan Ganapathy; Anthony B. Ward; Jörgen Borg; Per Ertzgaard; C. Herrmann; Anders Häggstrom; Mohamed Sakel; Julia Ma; Rozalina Dimitrova; Antony Fulford-Smith; Patrick Gillard

Background Improper use of bronchodilators is associated with poor disease control, nonadherence to long-term therapy, and poor clinical outcomes. Our current understanding of factors associated with correct inhaler use and adherence is limited. We measured physician-and patient-reported confidence in device usage and associations with treatment adherence and COPD-related health status. Methods This was an analysis of a US observational, point-in-time survey of physicians and patients. Physicians who met study eligibility criteria completed surveys for 5 consecutive, eligible patients who were then invited to respond to questionnaires. We assessed patient demographics, type of prescribed inhaler device(s), device training, COPD severity, comorbidities, physician-and patient self-reported confidence in device usage, treatment adherence, and health status. Results Completed questionnaires for 373 patients were provided by 134 physicians. Complete confidence in device usage was observed for 22% and 17% of patients as reported by patients and physicians, respectively. Greater confidence was associated with higher self-reported adherence to inhaler usage. Physicians were more likely than patients to report lower levels of patient confidence in device usage. High physician- and patient-reported confidence were associated with more favorable health status. Predictors of confidence in device usage included fewer comorbidities, no depression, and higher education levels. Conclusion Low confidence in inhaler usage was associated with lower adherence and poor COPD-related health status. Choice of inhaler device tailored to patients’ ability to use specific devices and ongoing education to support optimal inhaler usage may improve patient confidence and enhance both adherence and health status.


Clinical Therapeutics | 2017

Health status of patients with moderate to severe COPD after treatment with nebulized arformoterol tartrate or placebo for 1 year

James F. Donohue; Vaidyanathan Ganapathy; Michael D. Stensland; Lauren Nelson

Objective Arformoterol is the (R,R)-enantiomer of formoterol. Preclinical studies suggest that it is a stronger bronchodilator than the racemic (R,R/S,S)-formoterol; however, its potential clinical advantages have not been demonstrated. This study compared the length of stay (LOS), 30-day readmission rates, and doses of rescue medication administered in hospitalized patients with COPD who were treated with nebulized arformoterol or nebulized formoterol. Methods This retrospective analysis utilized data from Premier, Inc. (Charlotte, NC, USA), the largest nationwide hospital-based administrative database. COPD patients ≥40 years of age were included if they were hospitalized between January 2011 and July 2014, had no asthma diagnoses, and were treated with nebulized arformoterol or nebulized formoterol. LOS was measured from the day the patients initiated the study medication (index day). Rescue medications were defined as short-acting bronchodilators used from the index day onward. Multivariate statistical models included a random effect for hospital and controlled for patient demographics, hospital characteristics, admission characteristics, prior hospitalizations, comorbidities, pre-index service use, and pre-index medication use. Results A total of 7,876 patients received arformoterol, and 3,612 patients received nebulized formoterol. There was no significant difference in 30-day all-cause (arformoterol =11.9%, formoterol =12.1%, odds ratio [OR] =0.981, P=0.82) or COPD-related hospital readmission rates (arformoterol =8.0%, formoterol =8.0%, OR =1.002, P=0.98) after adjusting for covariates. The adjusted mean LOS was significantly shorter for arformoterol-treated vs formoterol-treated patients (4.6 vs 4.9 days, P=0.039), and arformoterol-treated patients used significantly fewer doses of rescue medications vs formoterol-treated patients (5.9 vs 6.6 doses, P=0.006). Conclusion During inpatient stays, treating with arformoterol instead of nebulized formoterol may lead to shorter LOS and lower rescue medication use.


Toxicon | 2015

207. OnabotulinumtoxinA improves pain in poststroke spasticity patients: findings from a randomized controlled trial

Jörg Wissel; Vaidyanathan Ganapathy; Yan J. Ma; Anthony B. Ward; Jörgen Borg; Per Ertzgaard; Antony Fulford-Smith; Patrick Gillard


Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation | 2018

Health-Related Quality of Life Improvements in Moderate to Very Severe Chronic Obstructive Pulmonary Disease Patients on Nebulized Glycopyrrolate: Evidence from the GOLDEN Studies

Gary T. Ferguson; Edward Kerwin; James F. Donohue; Vaidyanathan Ganapathy; Robert Tosiello; Vamsi Bollu; Krithika Rajagopalan


Chest | 2018

INHALATION DEVICE TECHNIQUE ERRORS AMONG PATIENTS WITH OBSTRUCTIVE LUNG DISEASES USING METERED-DOSE INHALERS: A SYSTEMATIC REVIEW AND META-ANALYSIS OF US STUDIES

Maryam Navaie; Vaidyanathan Ganapathy; Soojin Cho-Reyes; Bartolome R. Celli; Carole Dembek; Karen Yeh

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Alpesh Amin

University of California

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James F. Donohue

University of North Carolina at Chapel Hill

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Bartolome R. Celli

Brigham and Women's Hospital

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Logan Netzer

University of Rochester

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