Kunal Tewari

Dr. Kunal Tewari


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

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

Representative Publications

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4 April 2018 in BMC Pediatrics
Verified
Journal Article
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VTVishal Vishnu Tewari
Vishal Vishnu Tewari
RMRitu Mehta
Ritu Mehta
CSC. M. Sreedhar
C. M. Sreedhar
KTKunal Tewari
Kunal Tewari
AMAkbar Mohammad
Akbar Mohammad
MKMadhulika Kabra
Madhulika Kabra
4H syndrome is a congenital hypomyelinating leukodystrophy characterized by hypodontia, hypomyelination and hypogonadotropic hypogonadism belonging to the Pol III-related leukodystrophies which arise due to mutations in the POLR3A or POLR3B gene. The clinical presentation is of neurodevelopmental delay or regression with ataxia, dystonia, nystagmus, delayed deciduous dentition and abnormal order of eruption of teeth. MRI brain shows a characteristic hypomyelination pattern. Several mutations have been described in the implicated genes but there are no reports on mutations seen in patients from India. We report a 1½ year old girl, only child of a non-consanguinous couple who presented with delayed developmental milestones and delayed dentition. On physical examination she had downward slanting palpebral fissures, low set ears, smooth philtrum, hypodontia, prominent body hair and clitoromegaly. There was prominent horizontal nystagmus, hypertonia of both upper and lower limbs, exaggerated deep tendon jerks and flexor planter response. She had not attained complete head control and required support to sit. She showed absent waves on brainstem evoked response audiometry and her fundus examination showed bilateral optic atrophy with prolongation of P100 latencies on visual evoked potentials. MRI Brain showed hyperintensity of entire white matter with involvement of the internal and external capsule, frontal deep white matter and corpus callosum. Her karyotype was 46 XX and her endocrinal profile was unremarkable. Clinical exome sequencing identified an unreported mutation in the POLR3A gene. The same mutation was identified by Sanger sequencing in heterozygous state in both parents. The child is being managed with physiotherapy and developmental therapy. She has been provided with hearing aids and started on speech therapy. Parents were provided anticipatory guidance and genetic counselling about autosomal recessive nature of inheritance, risk of recurrence and need for follow-up. 4H syndrome is a rare congenital hypomyelinating leukodystrophy inherited as an autosomal recessive disorder due to mutations in the POLR3A and POLR3B gene. Delay or regression of milestones, abnormalities in dentition and endocrinal perturbations are its hallmark. A novel mutation in the POLR3A gene resulting in amino acid substitution of arginine for glutamine at codon 808 (p.R808Q) was detected in exon 18 in our case.

1 January 2018 in Indian Journal of Anaesthesia
Verified
Journal Article
Open access
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KTKunal Tewari
Kunal Tewari
VTVishal V Tewari
Vishal V Tewari
SDSubroto K Datta
Subroto K Datta
Background and Aims: Several drug combinations have been tried in patients with acyanotic congenital heart disease (ACHD) undergoing transcatheter device closure in the cardiac catheterisation laboratory (CCL). Adequate sedation, analgesia, akinesia, cardiorespiratory stability, and prompt recovery are key requirements. Ketamine with propofol is used for this purpose. Dexmedetomidine carries a shorter recovery time. This study compared dexmedetomidine–propofol (DP) with ketamine–propofol (KP) in patients in the CCL. Methods: This was an open label randomised trial at a CCL over a 2-year period from August 2012 to August 2014. Fifty-six paediatric and 44 young adults with ACHD underwent device closure and were randomised to receive DP or KP. The primary outcome studied was time to regain full consciousness, airway and motor recovery. Results: Baseline characteristics were similar in the study groups. In the DP arm as compared to the KP arm, the time to recovery of consciousness (mean ± SD) was significantly faster in both paediatric patients [30 ± 15 vs. 58 ± 13 min (P < 0.001)] and in young adult patients [22 ± 10 vs. 35 ± 12 min (P < 0.001)]. There was significantly faster motor recovery also (mean ± SD) [paediatric: 25 ± 05 vs. 40 ± 14 (P < 0.001); young adult: 10 ± 05 vs. 22 ± 10 min (P < 0.001)]. Conclusion: Procedural anaesthesia with DP in paediatric and young adult patients with ACHD undergoing device closure in the CCL resulted in faster recovery of consciousness and motor recovery compared to KP.

1 January 2018 in Journal of Marine Medical Society
Verified
Journal Article
Open access
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KTKunal Tewari
Kunal Tewari
NCNaveen Chawla
Naveen Chawla
RMRitu Mehta
Ritu Mehta
Background: Urinary bladder tumors are the second most common tumors affecting males. The aim of the study was to evaluate the various histopathological findings in various bladder tumors and their correlation with exfoliative urine cytology. Design: This is an observational study carried out over a period of 7 years at a tertiary care hospital between January 2010 and January 2017. Materials and Methods: Tumors were divided into invasive and noninvasive urothelial carcinoma and were further classified into high-grade or low-grade urothelial cancer. Urine cytology smears from all these patients were also were studied. Cytological findings were correlated with histopathological findings. Result showed that bladder tumors were commonly seen in males with average age of presentation being the sixth decade. The most common type of carcinoma seen was low-grade urothelial carcinoma-noninvasive type. Urine cytology was positive in 47.46% patients. Sample Size: In our study, 113 cystoscopic biopsies were included over a period of 7 years (85 males and 28 females). Conclusion: Accuracy of diagnosing malignancy in urine cytology varies, and it depends on the presence of diagnostic yield in the urine cytology, processing of the sample, and experience of the cytopathologist. Urine cytology should be reported in a background of detailed clinical information and should always be followed by histopathological examination.

15 August 2024 in Journal of Medical Sciences and Health
Verified
Journal Article
Open access
PDF file
KTKunal Tewari
Kunal Tewari
AMAkash Ray Mohapatra
Akash Ray Mohapatra
DMDeepak Mishra
Deepak Mishra
OTOm Bahadur Thapa
Om Bahadur Thapa
JYJyotsna
Jyotsna
Background: Blood loss is often a major complication of neurosurgery; and adversely impacts postoperative outcomes. Primary objective of our study was to assess the effect of tranexamic acid (TXA) on total perioperative blood loss and the need for packed red blood cell (PRBC) transfusion in patients. Secondary objective was to assess and compare the effect of TXA on haemoglobin (Hb) , packed cell volume (PCV), coagulation profile, crystalloid and PRBC requirement, neurological outcomes; and the quality of surgical field peri-operatively. Materials and Methods: 60 adult patients, undergoing elective craniotomy for tumor resection were recruited. 30 patients each, received either a bolus of TXA , followed by an infusion (TXA group); or normal saline in the same dose (Placebo group). Crystalloid and PRBC transfusion, blood loss, Hb, PCV, platelet count, fibrinogen levels, international normalized ratio were recorded. Mean intensive care unit (ICU) stay and Glasgow Outcome Extended (GOSE) score were also measured. Results: There was no significant difference in blood loss, PRBC requirement, Hb, PCV, fibrinogen levels , INR, duration of ICU stay or the quality of the operative field; between the TXA and placebo groups. GOSE scores were better and platelet count decrease was significantly higher in the TXA group. Conclusion: Low-dose TXA did not significantly reduce blood loss or improve outcomes in patients undergoing intracranial tumor resection. GOSE score was better; and the platelet decrease post- operatively was significantly higher in the TXA group. Keywords: Intracranial Tumours, Tranexamic Acid ( TXA), Glasgow Outcome Extended (GOSE) Score