Publications by authors named "Amit Mehta"

A 25-year-old previously healthy female presented with a week-long history of headache, fever, bilateral lower limb weakness, and urinary retention. Initial examination and investigations pointed toward an infectious cause, with magnetic resonance imaging (MRI) suggestive of leptomeningitis with myelitis, and cerebrospinal fluid (CSF) analysis revealing lymphocytic pleocytosis and a low glucose ratio. Empirical treatment for meningoencephalitis was initiated, including broad-spectrum antibiotics and high-dose steroids for myelitis.

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Objective: Emergency department (ED) sign-outs provide continuity of care for patients at shift changes. However, these periods have been associated with communication breakdowns and medical errors. We explored information factors (stage-of-the-case and the explicitness of the sign-out narrative) to determine their impact on clinicians' diagnostic accuracy and confidence.

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Front-line pharmaceutical treatment for treatment of acute graft-versus-host disease (aGVHD) is not uniformly effective and has toxic side effects. Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature myeloid cells with potent in vitro and in vivo immunosuppressive functions. Clinical translation of in vitro generated MDSCs has been limited by the need for high MDSC:T cell ratios, multiple infusions to reduce inflammation and a relatively low peripheral blood-derived MDSC (PB-MDSCs) yield.

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Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by recurrent thunderclap headache and multifocal cerebral arterial constriction, which can be associated with pregnancy and exposure to certain vasoactive agents. It is usually evoked by triggering agents in 80% of cases. RCVS can present with focal deficits or new-onset seizure in 8-43% and 1-17% of cases, respectively.

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Background: Moyamoya disease (MMD) is a rare pathological state characterized by progressive stenosis of the terminal portion of the internal carotid arteries (ICA). Complications include both ischemic and hemorrhagic strokes, for which there is no curative treatment for MMD. Early diagnosis with surgical intervention is vital for there is no definitive treatment.

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  • The study aimed to evaluate the effectiveness of the Epic Sepsis Predictive Model (ESPMv1) alert system in emergency departments by tracking its performance in identifying patients at risk for sepsis over the course of a year.
  • Out of nearly 146,000 patient encounters, the ESPMv1 alert was triggered in only 4.9% of cases, detecting sepsis in 2253 encounters while missing it in many others, leading to low sensitivity (14.7%) but high specificity (95.3%).
  • The findings suggest that the alert system offers minimal help to physicians in diagnosing sepsis, as most cases were treated without alert notifications, indicating the tool's limited diagnostic utility
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  • Killian-Jamieson diverticulum (KJD) is a rare esophageal condition typically treated with surgery, but a new method called KJ-POEM (per-oral endoscopic myotomy) offers a minimally invasive alternative.
  • An international study reviewing 13 patients who underwent KJ-POEM found that both clinical and technical success rates were 100%, with significant symptom improvement post-procedure.
  • The procedure demonstrated excellent safety, with no adverse events reported, a short hospital stay of about 1 day, and no recurrence of symptoms during the follow-up period of nearly 9.5 months.
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  • Zenker's diverticulum peroral endoscopic myotomy (Z-POEM) with mucosal flap incision (MFI) shows high effectiveness for treating symptomatic Zenker's diverticulum, as reported in a study involving 36 patients across eight international centers.
  • Clinical success was achieved in 97% of patients, with significant improvement in symptoms measured by the Kothari-Haber symptom score (KHSS).
  • The procedure demonstrated a strong technical success rate, with only one minor adverse event, indicating it is a safe option for patients with this condition, although further prospective evaluations are necessary for larger diverticulums.
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Background And Aims: Fully covered self-expandable metal stents (FCSEMSs) are widely used in benign upper GI conditions, but stent migration remains a limitation. An over-the-scope clip (OTSC) device (Stentfix {SF], Ovesco Endoscopy) for stent anchoring has recently been developed. The aim of this study was to evaluate the effect of OTSC fixation on FCSEMS migration rate.

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: Endoscopic sleeve gastroplasty (ESG) is a minimally invasive bariatric procedure to induce weight loss through restrictive physiology. This study was designed to evaluate the fluoroscopic measurement of gastric dimensions after ESG as a predictor of Total Body Weight Loss (TBWL) over time. : Post-ESG patients were enrolled prospectively between August 2013 and August 2019.

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Background: Development of esophageal varices is one of the major complications of liver cirrhosis, and endoscopy is used to see the presence, grading, and long-term monitoring of esophageal varices which is an invasive and unpleasant procedure. There is no adequate data available showing noninvasive methods can be used for the same.

Methods: Seventy patients with liver cirrhosis participated in the study.

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  • Acute lymphoblastic leukemia (ALL) treatment for children includes a 2-year outpatient maintenance therapy (MT), which transitioned from entirely outpatient to a hybrid e-clinic/outpatient model over 8 years.
  • The study analyzed data from 478 children on MT, finding that the hybrid model reduced outpatient visits by about two-thirds while maintaining treatment effectiveness and increasing dose intensity.
  • Families reported significant satisfaction with the hybrid service, which also cut maintenance treatment costs by roughly 50%, demonstrating it as an effective and less burdensome approach for patients.
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Periampullary diverticulum presenting with severe complications, such as perforations, is associated with high morbidity and mortality. Traditionally, only surgical or conservative management has been warranted. In this case, we present a 76-year-old woman with a spontaneously perforated periampullary diverticulum, located within a larger duodenal diverticulum, who achieved complete recovery with endoscopic closure after an initial unsuccessful attempt at surgical management.

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Background/objective: To determine the prevalence of visual impairment (VI), uncorrected refractive errors (URE), and effective refractive error coverage among individuals aged 15-50 years in Koshi Province, Nepal.

Methods: A population-based cross-sectional study was conducted in Koshi Province in which 4800 participants were selected from 80 clusters. The study teams visited the selected households and conducted eye examinations.

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Background And Purpose: Several studies in the literature have attempted to subjectively assess the degree of visualization of different neurovascular structures using different contrast agents and concentrations. Given the recent contrast shortages, we aim to objectively compare the radiopacity achieved with four angiographic contrast agents used in clinical practice.

Methods: Isovue 370, Visipaque 320, Omnipaque 300, and Isovue 300 were each drawn up at 25%, 50%, 75%, and 100% concentrations and compared against normal saline and air syringes.

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Unlabelled: BACKGROUND : There are limited data on the feasibility of endoscopic submucosal dissection (ESD) for superficial esophageal neoplasia (SEN) located at or adjacent to esophageal varices. We aimed to evaluate the outcomes of ESD in these patients.

Methods:  This multicenter retrospective study included cirrhotic patients with a history of esophageal varices with SEN located at or adjacent to the esophageal varices who underwent ESD.

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  • Elevated mean flow velocity (MFV) on transcranial Doppler (TCD) is used to predict vasospasm after aneurysmal subarachnoid hemorrhage, but a new marker—the hyperemia index (HI)—could provide better insights compared to the traditional Lindegaard ratio (LR).
  • A study assessed HI, LR, and maximal MFV in SAH patients to determine their associations with vasospasm and delayed cerebral ischemia (DCI), using logistic regression and receiver operating characteristic analyses.
  • Results showed that a lower HI was associated with a higher likelihood of vasospasm and DCI, suggesting that an HI value below 1.2 can help assess risk when elevated MFV is noted or when TCD
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Objectives: To evaluate the association between post-endovascular thrombectomy (EVT) blood-brain barrier (BBB) disruption on MRI or CT and average systolic blood pressure (SBP) with favorable 90-day functional outcome. Observational studies have found elevated SBP associated with worse outcomes post-EVT, while recent randomized trials found no difference in targeted BP reduction. There may be a subgroup of patients who benefit from targeted BP reduction post-EVT.

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Background: Complete closure of large mucosal defects following colorectal endoscopic submucosal dissection (ESD) with through-the-scope (TTS) clips is oftentimes not possible. We aimed to report our early experience of using a novel TTS suturing system for the closure of large mucosal defects after colorectal ESD.

Methods: We performed a retrospective multicenter cohort study of consecutive patients who underwent attempted prophylactic defect closure using the TTS suturing system after colorectal ESD.

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Background: Dengue fever is a mosquito borne disease commonly manifest leucopoenia and thrombocytopenia. Dengue fever and its complications like bleeding manifestation can be life threatening. This study was conducted to study the effect of doxycycline and doxycycline with carica papaya on thrombocytopenia and leucopoenia in acute dengue fever patients.

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