K. Ravichandran

ORCID: 0000-0002-3529-9984
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Research Areas
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Crystal structures of chemical compounds
  • Coastal wetland ecosystem dynamics
  • Synthesis and biological activity
  • Plant and Fungal Species Descriptions
  • Crystallography and molecular interactions
  • Agricultural and Environmental Management
  • Synthesis of Organic Compounds
  • Airway Management and Intubation Techniques
  • Phenothiazines and Benzothiazines Synthesis and Activities
  • Marine and coastal plant biology
  • Glaucoma and retinal disorders
  • Structural and Chemical Analysis of Organic and Inorganic Compounds
  • Anesthesia and Sedative Agents
  • Iron Metabolism and Disorders
  • Corneal surgery and disorders
  • Global Cancer Incidence and Screening
  • Synthesis and Reactivity of Sulfur-Containing Compounds
  • Economic and Financial Impacts of Cancer
  • Erythropoietin and Anemia Treatment
  • Chemical Synthesis and Analysis
  • Simulation-Based Education in Healthcare
  • COVID-19 Clinical Research Studies
  • Respiratory Support and Mechanisms

Pondicherry Institute of Medical Sciences
2016-2024

Dr. M.G.R. Educational and Research Institute
2023-2024

Institute of Medical Sciences
2022-2024

Institut d'Etudes Politiques de Paris
2022-2024

Anna University, Chennai
2022

ICAR - Central Island Agricultural Research Institute
2006-2020

Sri Ramachandra Institute of Higher Education and Research
2019

University of Otago
2019

Pondicherry University
2015

Central Ground Water Board
2014

Dissolved CH 4 , N 2 O, O and inorganic nitrogen nutrients (NH + NO 3 − ) were measured over tidal cycles in pristine Wright Myo mangrove creek waters during dry wet seasons. showed no seasonality (dry season; 491 ± 133 nmol l −1 9.0 2.3 466 94 8.6 1.3 ). Creek water dissolved gas distributions reflect sediment porewater release hydrostatic pressure drop toward low water. emission was suppressed by oxidation rainfall, consistent with changes to speciation, although emissions unaffected....

10.1029/2006gl026829 article EN Geophysical Research Letters 2006-08-01

Oral iron is the mainstay of treating deficiency anemia. Recent studies indicate better fractional absorption with alternate day supplementation. However, optimal supplementation strategy unclear. We compared effectiveness daily versus oral for treatment This double blind, active control, randomized controlled trial was conducted on two hundred adults having hemoglobin 10 g/dL or less microcytic hypochromic anemia and/or serum ferritin below 50 ng/mL. They were to receive either Ferrous...

10.1038/s41598-023-29034-9 article EN cc-by Scientific Reports 2023-02-01

One hundred unpremedicated ASA 1 or 2 patients scheduled for elective surgery were divided equally into four groups and recruited this prospective, randomised parallel study. Induction was with propofol 2.5 mgkg −1 vital‐capacity breath induction sevoflurane (> 7% in the inspiratory gas) 65% nitrous oxide oxygen, gaseous plus alfentanil 5 μgkg . The conditions laryngeal mask insertion assessed graded on a three‐point scale using six variables. overall condition as excellent, satisfactory...

10.1046/j.1365-2044.1999.00663.x article EN Anaesthesia 1999-03-01

To date, there are no published studies from Saudi Arabia on the incidence or etiology of craniofacial anomalies. This study aimed to report patterns anomalies in Arabia.

10.4103/0256-4947.84626 article EN cc-by-nc-nd Annals of Saudi Medicine 2011-09-01

Inhalational induction is one of the recognized methods for management difficult airway. Halothane usual choice agent this purpose. The relatively new sevoflurane, which least irritant all available agents, emerging as a inhalational both adult and pediatric populations. There are various reports against use sevoflurane We describe airway in four patients presenting with problems ( Note ).

10.1034/j.1399-6576.2000.00523.x article EN Acta Anaesthesiologica Scandinavica 2000-05-01

Introduction The electrocardiogram (ECG) is one of the most important tools in diagnosing cardiac abnormalities, particularly arrhythmias and myocardial infarction. It certifiable competencies for final-year medical undergraduate students. We determined virtual reality's effectiveness acquiring retaining ECG interpretation skills among students compared to traditional teaching. Methods One hundred forty were randomized into two groups. Seventy-one (immersion group) trained using reality...

10.7759/cureus.62170 article EN Cureus 2024-06-11

Postoperative sore throat (POST) is a known complication following general anesthesia requiring endotracheal intubation. Its incidence ranges from 21% to 65% and remains the eighth most undesirable postoperative event. Various measures have been tried decrease of with various success rates.This study aimed at reducing POST ketamine magnesium sulfate nebulization.This prospective randomized, double-blinded study.After Institutional Ethics Committee approval written informed consent, 80...

10.4103/aer.aer_148_18 article EN Anesthesia Essays and Researches 2018-01-01

Concurrent infection with multiple pathogens is common in tropics, posing diagnostic and treatment challenges. Although co-infections of dengue, malaria, leptospirosis typhoid various combinations have been described, data on dengue scrub typhus co-infection distinctly limited.This study was a retrospective analysis diagnosed between January 2010 July 2014 at tertiary care center. Clinical laboratory features these cases were compared age gender-matched patients isolated fever typhus....

10.4084/mjhid.2016.028 article EN cc-by-nc Mediterranean Journal of Hematology and Infectious Diseases 2016-06-16

Background While several parameters have emerged as predictors of prognosis COVID-19, a simple clinical score at baseline might help early risk stratification. We determined the ability National Early Warning Score 2 (NEWS2) to predict poor outcomes among adults with COVID-19. Methods A prospective study was conducted on 399 hospitalised confirmed SARS-CoV-2 infection between August and December 2020. Baseline NEWS2 determined. Primary outcome defined need for mechanical ventilation or death...

10.1371/journal.pone.0261376 article EN cc-by PLoS ONE 2021-12-15

10.1016/j.oret.2021.02.015 article EN Ophthalmology Retina 2021-03-01

Ragavan P, Saxena A, Mohan PM, Jayaraj RSC, Ravichandran K. 2015. Taxonomy and distribution of species the genus Acanthus (Acanthaceae) in mangroves Andaman Nicobar Islands, India. Biodiversitas 16: 225-237. A recent floristic surveyrevealed occurrence three Of these Acanthusilicifolius A. ebracteatus are shrubs, whereas volubilis is a climbing shrub. All were recorded from theAndaman but only ilicifolius Islands. easily distinguished other two by itsunarmed twining delicate sprawling stems,...

10.13057/biodiv/d160218 article EN Biodiversitas Journal of Biological Diversity 1970-01-01

Ragavan P, Ravichandran K, Jayaraj RSC, Mohan PM, Saxena A, Saravanan S, Vijayaraghavan A. 2014. Distribution of mangrove species reported as rare in Andaman and Nicobar islands with their taxonomical notes. Biodiversitas 15: 12-23. During the recent field survey it was found that among 15 mangroves Islands, ten i.e. Acanthus ebracteatus, Acrostichum speciosum, Bruguiera cylindrica, Cynometra iripa, ramiflora, Lumnitzera racemosa, Rhizophora hybrids, Sonneratia alba, griffithii Xylocarpus...

10.13057/biodiv/d150103 article EN Biodiversitas Journal of Biological Diversity 2014-03-20

In order to bring out the nature of factors influencing lake water composition, multivariate statistical analysis and trend were performed based on hydrochemical data study area, namely, South Chennai. Change in land use pattern settlements along banks lakes alters quality quantity surface water. present study, R‐mode factor cluster applied geochemical parameters identify affecting chemical composition Dendograms both seasons give three major clusters, reflecting groups unpolluted moderately...

10.1002/cem.2664 article EN Journal of Chemometrics 2014-09-09

This randomized controlled study examined intubating conditions and haemodynamic changes following sevoflurane nitrous oxide induction in four groups: three different doses of alfentanil compared with low-dose suxamethonium. All patients received atropine 0.3 mg i.v. before anaesthesia vital capacity breaths 8% (more than 7% the inspiratory gas) 60% oxygen. Patients were allocated randomly to groups intravenous supplements: group SA20, 20 microg x kg(-1); SA25, 25 SA30, 30 SSA, 10 kg(-1)...

10.1177/0310057x0102900409 article EN Anaesthesia and Intensive Care 2001-08-01

Background and Aims: Regional anesthesia is known to produce perioperative hypothermia shivering. We aimed evaluate if prophylactic low dose ketamine bolus followed by infusion would prevent intraoperative postoperative shivering under spinal anesthesia. Material Methods: Sixty patients belonging American Society of Anaesthesiologists (ASA) 1 2 undergoing abdominal lower limb surgery were randomized receive either 0.2 mg/kg iv 0.1 mg/kg/hr (Group K) or5 ml saline ml/kg/hr solution S) as an...

10.4103/joacp.joacp_201_19 article EN cc-by-nc-sa Journal of Anaesthesiology Clinical Pharmacology 2020-01-01

As it is increasingly being reported from India, we carried out a prospective study of patients with culture-proven melioidosis south examining clinical, laboratory features, epidemiological data, risk factors, treatments, outcomes at three and six months, factors associated mortality. Between 2014 2018, 31 cases were identified. Diabetes (83.9%) alcohol abuse (58.1%) common factors. Musculoskeletal, skin soft tissue manifestations together constituted 48.4% presentations, while 29% had...

10.1177/0049475520943698 article EN Tropical Doctor 2020-07-29

The optimal therapy for children with Hodgkin 's disease is controversial. Between 1989 and 1993, 53 under 14 years of age Hodgkin's were treated COPP/ABV (cyclophosphamide, vincristine, procarbazine, prednisolone/adriamycin, bleomycin, vinblastine) hybrid chemotherapy. results analyzed the Kaplan-Meier product limit method survival Logrank test predicting statistical significance. Ten patients (18.87%) had early-stage (I to IIA) 43 (81.13%) advanced disease. Lymphocyte-predominant histology...

10.3109/08880019509029583 article EN Pediatric Hematology and Oncology 1995-01-01
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