Publications by authors named "Ravi Kanojia"

We present a rare case of a 17-month-old child diagnosed with MS-stage neuroblastoma and associated chronic diarrhea due to elevated vasoactive intestinal peptide (VIP) levels. The unusual occurrence of a VIP-secreting tumor in a patient with MS neuroblastoma is a rare combination, not previously reported in the literature. The patient underwent exploratory laparotomy and excision of the tumor, leading to a significant decline in VIP levels and resolution of symptoms.

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Background: Enteric infections are hypothesized to be associated with intussusception in children. A small increase in intussusception following rotavirus vaccination has been seen in some settings. We conducted post-marketing surveillance for intussusception following rotavirus vaccine, Rotavac introduction in India and evaluated association of intussusception with enteric pathogens.

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 The native liver survival in biliary atresia (BA) depends on various factors, and one of the crucial factors is the rate of progression of liver fibrosis after portoenterostomy, but there is no reliable investigation to assess it. This study evaluated shear wave elastography (SWE) to detect liver fibrosis in BA patients and assess its utility during follow-up.  This was an observational study; SWE was done preoperatively and postoperatively at 3 and 6 months.

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Article Synopsis
  • * This scoping review investigates the current status of liquid biopsy biomarkers in NBL, adhering to PRISMA-ScR guidelines, and evaluated a total of 15 studies from 201 reviewed publications.
  • * Findings show that liquid biopsy biomarkers, such as circulating tumor cells and circulating tumor DNA, could greatly enhance diagnosis and treatment monitoring for NBL, paving the way for advancements in precision medicine for childhood cancer care.
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  • Extrahepatic biliary atresia (BA) is a rare infant condition leading to jaundice, for which Kasai portoenterostomy (KPE) is a common surgical treatment, but there’s no standard postoperative care protocol across different clinics.
  • A study aimed to evaluate the current postoperative management practices among BA experts and determine if they would adjust their approaches based on survey findings.
  • Results revealed varied practices: around 40% prescribe antibiotics for 6-12 weeks, many give phenobarbitone for less than 3 months, and a significant number utilize steroids, with some experts conducting multiple KPE surgeries annually.
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Gastrinomas with predilection for the adult male population are located in the gastrinoma triangle (>90%). Primary hepatic gastrinoma especially in pediatric population is very rare. Peptide receptor radionuclide therapy has shown benefit in metastatic gastroenteropancreatic neuroendocrine tumors (NETs) with an increasing interest in expanding its role as neoadjuvant treatment modality to improve the surgical candidature in inoperable NETs.

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Background: Intraoperative fluid therapy maintains normovolemia, normal tissue perfusion, normal metabolic function, normal electrolytes, and acid-base status. Plethysmographic variability index has been shown to predict fluid responsiveness but its role in guiding intraoperative fluid therapy is still elusive.

Aims: The aim of the present study was to compare intraoperative goal-directed fluid therapy based on plethysmographic variability index with liberal fluid therapy in term neonates undergoing abdominal surgeries.

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Background: Kasai portoenterostomy (KPE) is the initial treatment for biliary atresia (BA). Even after initial jaundice clearance, a significant number of children presented with the reappearance of symptoms due to ongoing fibrosis involving porta and intrahepatic ducts. Mitomycin-C (MMC) is an antifibrotic agent, and the study hypothesized that local application of MMC at porta can decrease fibrosis, which can improve jaundice clearance and lead to better native liver survival (NLS).

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To identify and evaluate differentially expressed plasma proteins in biliary atresia (BA), we performed plasma proteome profiling using liquid chromatography with tandem mass spectrometry (LC-MS/MS) in 20 patients with BA and 10 control children. Serological assays validated the most significant and highly upregulated proteins in a cohort of 45 patients and 15 controls. Bioinformatics tools were used for functional classification and protein-protein interactions of differentially expressed proteins (DEPs).

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Background: Outcome of Isolated ventriculomegaly diagnosed antenatally depends on size of ventricles and associated malformations. There is scarcity of literature on the guidelines for prognostication based on outcomes as per the ventricle size.

Aim: The aim of this work was to study outcome of antenatally detected isolated ventriculomegaly in terms of medical termination, postnatal neuro-developmental milestones, and mortality; and also to propose a new prognostication classification.

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  • Parents of newborns undergoing surgery experience significant stress, with factors like hospital overcrowding and financial issues exacerbating their situation.
  • A study conducted in a neonatal surgical ICU analyzed stress levels in 100 parents using a specific questionnaire on days 3-5 post-surgery.
  • Results showed higher stress in mothers compared to fathers, particularly concerning the changes in parental roles and infant behavior, indicating a need for targeted support and counseling.
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Objective: To estimate the impact of delayed presentation of anorectal malformation (ARM) in neonates and to compare the presenting characteristics and outcomes of early versus delayed presentation.

Methods: This is a prospective observational study of all neonates (age < 28 d) with ARM over 2 y. Delayed presentation was defined as presentation beyond 48 h of birth.

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Extrarenal calyces (ERC) is a rare renal anomaly where calyces lie outside the renal parenchyma and are connected to pelvis by draining infundibulum. Its presentation with pelviureteric junction obstruction presents a confusing intraoperative finding. We report two cases of ERC with pelviureteric junction obstruction in the ectopic kidney.

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Background And Aims: α agonists have been utilised in regional blocks, but very little data is available for their use in transversus abdominis plane (TAP) block in paediatric laparoscopic (LAP) surgeries. This study investigated the analgesic effect of ropivacaine alone versus its combination with dexmedetomidine for TAP block in children undergoing LAP surgery.

Methods: A randomised, double-blind trial was conducted in 50 American Society of Anesthesiologists (ASA) 1 and 2 children of 2-8 years undergoing LAP abdominal surgery.

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Objectives: To report the data of burden of rotaviral acute gastroenteritis in under-five children from two states post-introduction of the vaccine.

Methods: Children under 5 y of age hospitalized with diarrhea from the states of Haryana and Himachal Pradesh in north India were recruited in the study. Commercially available ELISA kits were used for testing rotavirus in the collected stool samples.

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Purpose: Association of spinal or vertebral anomalies and the iatrogenic denervation during surgical correction of anorectal malformation patients especially in boys can lead to neurogenic bladder inthese subset of patients. The paucity of literature with regard to urodynamic studies focusing exclusively in male children with high-anorectal malformations (HARM) lead us to analyze the urodynamic changes. The objective was to study urodynamic profile in male patients who have undergone surgery for anorectal malformation.

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Objective: To describe epidemiology of intussusception post-introduction of the rotavirus vaccine.

Methods: Hospital-based active surveillance system was set up in three tertiary care hospitals in Chandigarh and Haryana, India, to enroll children <2 y of age admitted with intussusception as per Brighton Collaboration Level-I criteria. The clinical characteristics, treatment modalities, seasonal trends, and outcome of the illness episodes were described.

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Purpose: This study is carried out to characterize the prognosis and outcome of antenatally diagnosed cystic hygroma in a series of registered pregnancies.

Methods: This is a prospective cohort study, carried out over a period of 4 years (Jan 2016-Sept 2019). All the pregnancies referred from the department of obstetrics with antenatally detected cystic hygroma or increased nuchal thickness on level II ultrasonography suggestive of lymphangiomas were registered in the Pediatric Surgery outpatient department.

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Introduction: Neurogenic bladder (NB) post-meningomyelocele (MMC) repair is a major challenge and needs lifelong follow-up. Many cytokines have been implicated in the pathogenesis of NB. To avoid repeated urodynamic studies (UDS) and renal scans, we studied urinary tissue inhibitors of metalloproteinases-2 (TIMP-2) levels and correlated with urodynamic profiles to establish their efficacy.

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