Tapan Parikh

Dr. Tapan Parikh

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Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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14 November 2021 in International Journal of Neuropsychopharmacology
Verified
Journal Article
Open access
PDF file
TPTapan Parikh
Tapan Parikh
JSJeffrey R Strawn
Jeffrey R Strawn
JWJohn T Walkup
John T Walkup
PCPaul E Croarkin
Paul E Croarkin
Anxiety disorders such as generalized anxiety disorder (GAD) impact 10% of the US population, and many patients do not completely respond to first-line treatments (e.g., selective serotonin reuptake inhibitors, serotonin-norepinephrine reuptake inhibitors, and psychotherapy). Given the dearth of evidence for non-pharmacologic, non-psychotherapeutic interventions, we performed a systematic review and meta-analysis of repetitive transcranial magnetic stimulation (rTMS) in adults with GAD. A systematic literature review using the Preferred Reporting Items for Systematic reviews and Meta-Analyses guidelines was conducted. Pre- and post-treatment anxiety scores were extracted, and a random-effects meta-analysis was conducted to determine the magnitude of improvement (standardized mean difference). Standard assessments of heterogeneity (e.g., Q-statistic, I2, and τ 2) and publication bias were performed. The initial search resulted in 3194 citations, of which 6 studies were included in the meta-analysis. In total, 152 patients were studied, including 97 patients who received active treatment and 55 who received sham treatment, and heterogeneity was modest (I2 13.32, Q = 5.77). In patients with GAD, rTMS produced a standardized mean difference of −1.857 (confidence interval: −2.219 to −1.494; P < .001) with a prediction interval of −2.55 to −1.16. The results suggest a robust effect of rTMS in GAD in the context of limited, heterogenous studies. Rigorously designed, randomized controlled trials of rTMS for GAD and related anxiety disorders are urgently needed. These studies will provide opportunities for biomarker development and integration of concurrent evidence-based psychotherapy to maximize results.

14 May 2022 in Psychiatry Research
Verified
Journal Article
Closed access
NDNishitha Depa
Nishitha Depa
Saral DesaiSaral Desai
Saral Desai
SPShweta Patel
Shweta Patel
SSSuraiya Silvi
Suraiya Silvi
SHSarah Hanif
Sarah Hanif
ZMZeeshan Mansuri
Zeeshan Mansuri

7 August 2021 in Cureus
Verified
Journal Article
Open access
JGJayasudha Gude
Jayasudha Gude
RSRashmi Subhedar
Rashmi Subhedar
MZMichelle H. Zhang
Michelle H. Zhang
PJPratik Jain
Pratik Jain
JBJatminderpal Bhela
Jatminderpal Bhela
TPTapan Parikh
Tapan Parikh
The coronavirus disease 2019 (COVID-19) pandemic has resulted in nationwide stay-at-home orders in an effort to slow the spread severely impacting the healthcare sector. Telepsychiatry provides a platform bridging the gap through advanced technologies connecting mental health providers and patients who need their services, overcoming previous barriers of great distances, lack of transportation, and even time constraints. The most obvious benefit is increased accessibility to mental healthcare, especially in underserved and remote areas where there is no easy access for in-person care. It is important to note that benefits are not limited to patients, but also allow clinicians greater flexibility in scheduling and reduced practice overhead costs, both of which aid with physician burnout and burden. Telepsychiatry during COVID-19 provides its own unique advantages over in-person visits. The risk of exposure to healthcare workers and patients receiving care is reduced, allowing immunocompromised patients to receive much-needed psychiatric care. Without the need to meet in person, self-isolating psychiatrists can still provide care, decreasing strain on their co-workers. Although telepsychiatry is relatively new, it has already exhibited considerable success in its effectiveness at treating psychiatric conditions and widespread corollary benefits. Telepsychiatric consults may be carried out synchronously and asynchronously, each having benefits and setbacks. Different mobile application interventions have been explored, which are available for the purpose of both monitoring/assessing patients and/or providing treatment. The scope of conditions these applications address is broad, from anxiety disorders to schizophrenia to depression. As promising and beneficial telepsychiatry may seem, it is necessary to recognize that building the program can be challenging. It involves adapting to new methods in medicine. We highlighted barriers to general telepsychiatry, the most prominent being technological literacy of both physician and patient, and possible negative effects of eliminating the in-person patient-doctor interaction.

11 June 2018 in Current Drug Abuse Reviews
Verified
Journal Article
Closed access
PDF file
RMRamkrishna Makani
Ramkrishna Makani
BPBasant Pradhan
Basant Pradhan
USUmang Shah
Umang Shah
TPTapan Parikh
Tapan Parikh
Background: Addiction and related disorders are devastating with their tremendous social, psychological, and physical consequences for which development of optimally effective treatments are long overdue. Repetitive transcranial magnetic stimulation (rTMS) is relatively safe and is becoming an emerging therapeutic tool for these conditions. Methods: This systematic review was conducted using PubMed, PsycINFO, PsychiatryOnline and Cochrane Library ranging from year 2001 to 2017. Results: Our search retrieved 70 related articles of which, based on the Strength of Recommendation Taxonomy (SORT) guidelines, 33 indicated Level-1 study quality and class-B strength of recommendation for rTMS in nicotine addiction (effective in 218/289 subjects who received rTMS as found in 11 studies). Level-2/Class-B evidence was found for alcohol and cocaine addictions (Alcohol: effective in 126/193 subjects who received rTMS as found in 8 studies; Cocaine: effective in 86/128 subjects, as found in 5 studies). For food cravings, Level-3/Class-B evidence was noted (effective in 134/169, found in 7 studies). However, the evidence was limited to Level-3/Class-C for heroin (10/20 subjects received active rTMS, effective in 1 study), methamphetamine (33/48 subjects received active rTMS, effective in 2 studies), cannabis (18/18 subjects received active rTMS, effective in 1 study), and pathological gambling (31/31 subjects received active rTMS, effective in 2 studies). Conclusion: rTMS may serve as an emerging therapeutic option for addiction and related disorders. The major lacunae include important methodological limitations and dearth of knowledge about precise mechanism of action that need to be addressed in the future studies.

5 October 2015 in Depression Research and Treatment
Verified
Journal Article
Open access
PDF file
BPBasant Pradhan
Basant Pradhan
TPTapan Parikh
Tapan Parikh
RMRamkrishna Makani
Ramkrishna Makani
MSMadhusmita Sahoo
Madhusmita Sahoo
Depression affects about 121 million people worldwide and prevalence of major depressive disorder (MDD) in US adults is 6.4%. Treatment resistant depression (TRD) accounts for approximately 12–20% of all depression patients and costs $29–$48 billion annually. Ketamine and repetitive transcranial magnetic stimulation (rTMS) have useful roles in TRD, but their utility in long term is unknown. As per the latest literature, the interventions using Yoga and meditation including the mindfulness based cognitive therapy (MBCT) have been useful in treatment of depression and relapse prevention. We present a review of rTMS, ketamine, and MBCT and also report efficacy of a depression specific, innovative, and translational model of Yoga and mindfulness based cognitive therapy (DepS Y-MBCT), developed by the first author.DepS Y-MBCTas an adjunctive treatment successfully ameliorated TRD symptoms in 27/32 patients in an open label pilot trial in TRD patients. Considering the limitations of existing treatment options, including those of ketamine and rTMS when used as the sole modality of treatment, we suggest a “tiered approach for TRD” by combining ketamine and rTMS (alone or along with antidepressants) for rapid remission of acute depression symptoms and to useDepS Y-MBCTfor maintaining remission and preventing relapse.

1 November 2017 in American Journal of Psychiatry Residents' Journal
Verified
Journal Article
Closed access
RMRamkrishna Makani
Ramkrishna Makani
TPTapan Parikh
Tapan Parikh