Publications by authors named "Nambi P"

Background: The availability of rapid diagnostic platforms for positive blood cultures has accelerated the speed at which the clinical microbiology laboratory can identify the causative organism and facilitate early appropriate antimicrobial therapy. There is a paucity of data regarding the clinical utility of the blood culture identification 2 (BCID2) panel test and its correlation with phenotypic drug susceptibility testing (DST) in flagged blood culture bottles from intensive care units (ICUs) in countries such as India, which have high rates of multidrug-resistant gram-negative bacteria (MDR-GNB).

Materials And Methods: We conducted a retrospective observational study in a tertiary care ICU on 200 patients above 18 years of age in whom a BCID2 test was ordered when blood cultures flagged positive.

View Article and Find Full Text PDF

Background: There is a scarcity of data regarding nosocomial infections in patients with COVID-19 treated with ECMO. This observational study from India aims to describe the epidemiology and microbiology of infections in patients with COVID-19 associated ECMO.

Methods: This is an ambi-directional observational study of COVID-19 ECMO patients admitted from April 2021 to June 2022 in a tertiary care hospital.

View Article and Find Full Text PDF

Fucoidan, a polysaccharide derived from brown seaweeds, especially Fucus Vesiculosus has been documented as an effective neuroprotectant. This study investigates the efficacy of fucoidan in mitigating the cognitive deficits in the rat model of vascular dementia induced through the 4-vessel occlusions (4VO) method. Male Wistar rats weighing about 250-300 g were randomly assigned into four groups, sham, lesion (4VO), 4VO + F5mg/kg, and 4VO + F50mg/kg.

View Article and Find Full Text PDF

Introduction And Background: Rapid molecular diagnostics to predict carbapenem resistance well before the availability of routine drug sensitivity testing (DST) can serve as an antimicrobial stewardship tool in the context of high rates of Carbapenem-resistant (CRE).

Materials And Methods: A retrospective observational study of patients more than 18 years of age on whom Xpert Carba-R (FDA approved for rectal swab specimen) was done on gram-negative bacteria (GNB) flagged blood culture samples, in an Indian intensive care unit between January 2015 and November 2018. We analyzed the performance of Xpert Carba-R in comparison with routine DST.

View Article and Find Full Text PDF

Background And Aim: The coronavirus disease-2019 (COVID-19) pandemic is a global threat spreading like a wildfire and taking the world by its storm. It has challenged the healthcare delivery systems and disrupted them in a way no one ever imagined before. We at Apollo Hospitals, Chennai, Tamil Nadu, India received many patients in the COVID critical care unit (CCU) and found a gradual lack of bundle care compliance resulting in an upsurge of central line-associated bloodstream infection (CLABSI) amid the patients.

View Article and Find Full Text PDF

Background: The incidence of Carbapenem Resistant Enterobacteriaceae (CRE) infections is increasing worldwide. Due to dearth of alternative antibiotics, prevention of infection transmission is a part of CRE infection management strategy. Early detection of CRE by active surveillance coupled with contact isolation is much more appropriate compared to contact isolation upon receipt of routine cultures dictated by the patient's clinical condition.

View Article and Find Full Text PDF

Background & Objectives: Sepsis, including neonatal sepsis, remains a prevalent cause of morbidity and mortality in low- and middle-income countries such as India, representing 85 per cent of all sepsis-related deaths globally. Early diagnosis and timely initiation of treatment is challenging due to non-specific clinical manifestations and non-availability of rapid diagnostic tests. There is an urgent need for affordable diagnostics with fast turnaround time catering to the needs of end-users.

View Article and Find Full Text PDF

Cerebral ischemic reperfusion injury could emanate a cascade of events ensuing in neural death and severe neurobehavioural deficits. The currently available interventions have failed to target the multimodal, interlinked mechanisms that operate cerebral ischemia-induced damage and functional loss. So an integrative intervention has become a mandate to overcome the deleterious mechanisms involved in cerebral ischemic pathophysiology.

View Article and Find Full Text PDF

is a Gram-positive bacillus, a zoonotic pathogen rarely causing human infections ranging from localized skin infections to invasive infections such as endocarditis. In this report, we present two cases of bacteremia. The first case is a native valve tricuspid endocarditis, which is a highly unusual valve to be involved.

View Article and Find Full Text PDF
Article Synopsis
  • - This study aimed to assess the clinical profiles of adults with post-COVID multisystem inflammatory syndrome (MIS-A) in a southern India hospital from November 2020 to July 2021.
  • - Nine patients (5 men, average age 40) showed signs of MIS-A, all testing positive for SARS-CoV-2 antibodies while negative for active COVID-19, with common symptoms including fever and gastrointestinal distress.
  • - The majority received corticosteroid treatment, leading to recovery for six patients, while three patients unfortunately did not survive; elevated inflammatory markers were noted, but procalcitonin levels were not useful in distinguishing MIS-A from bacterial infections.
View Article and Find Full Text PDF

Streptococcus pyogenes (SP) causes uncomplicated infections of throat & skin to severe life-threatening invasive diseases and poststreptococcal sequelae. Despite being common, it hasn't been studied much in recent times. Data of 93 adult patients >18 years, culture proven (SP) infections from 2016 to 2019 was studied in south India.

View Article and Find Full Text PDF

Invasive candidiasis (IC) is a major cause of morbidity and mortality in critically ill patients in the intensive care unit (ICU). In this study, we aim to analyze the clinical profile, species distribution, and susceptibility pattern of patients with IC. Case records of non-neutropenic patients ≥18 years of age with IC between January 2016 and June 2019 at a tertiary care referral hospital were analyzed.

View Article and Find Full Text PDF

De-escalation is the key to balance judicious antibiotic usage for life-threatening infections and reducing the emergence of antibiotic resistance caused by antibiotic overuse. Robust evidence is lacking regarding the safety of antibiotic de-escalation in culture negative sepsis. Children admitted to the PICU during the first 6 months of 2019 with suspected infection were included.

View Article and Find Full Text PDF

We report a rare case of Brodie's abscess caused by (). Our patient is a 39-year-old male who presented with right foot pain a month after a new diagnosis of HIV infection. X-ray and MRI were done, and the diagnosis of Brodie's abscess was confirmed.

View Article and Find Full Text PDF

Background: Infective endocarditis (IE) remains a serious challenge with a persistently high morbidity and mortality despite the availability of improved diagnostic and treatment amenities in the developing world. Data on the clinical and microbiological profile of IE in India is still limited. The emergence of modern risk factors such as hospitalization and device insertion has changed the epidemiology of the disease in the western world, whereas in India and other parts of the developing world the situation is more complex because of the concomitant burden of rheumatic heart disease and congenital heart defects.

View Article and Find Full Text PDF

Background: Infection/colonization due to carbapenem-resistant enterobacteriaceae (CRE) are emerging as an important challenge, particularly in high risk patients due to widespread use of Carbapenems. Therefore, preventing both CRE infections and their transmission has become an important infection control objective.

Aims And Objective: Determine the proportion of asymptomatic carriers of CRE among patients admitted to our critical care unit (CCU) from the community and other health care facilities.

View Article and Find Full Text PDF

Chronic cerebral hypoperfusion (CCH), a concern for neurocognitive health, is linked to various vascular ailments and other comorbidities. This study primarily aims to explain the mitigating effects of glycyrrhizic acid (GA) on cognitive health challenged by chronic cerebral hypoperfusion. Adult male Sprague Dawley rats were allocated into four groups: (i) Sham, (ii) Lesion (2VO), (iii) GA treated (20 mg/kg), and (iv) lithium chloride (Li) treated (40 mg/kg).

View Article and Find Full Text PDF

Background: Many patients with histoplasmosis are treated with anti-tubercular therapy (ATT) in tuberculosis endemic regions as diagnosis of histoplasmosis requires invasive sampling. We sought to study the utility of urinary Histoplasma antigen detection test.

Methods: Case records of patients with a diagnosis of histoplasmosis prior to (Period A) and after (Period B) introduction of urinary Histoplasma antigen detection test were analysed in this single centre retrospective study.

View Article and Find Full Text PDF

Whitmore's disease or melioidosis is an infectious disease caused by Burkholderia pseudomallei. The reported cases are but the tip of the iceberg. This pathogenic saprophyte is commonly found in wet soil and water.

View Article and Find Full Text PDF

Background: The (1,3)-β-D-glucan assay (BDG) is recommended for the early diagnosis of invasive candidiasis (IC).

Methods: Records of 154 critically ill adults with suspected IC, on whom BDG was done, were analyzed. Patients were divided into three groups: Group A (confirmed IC), Group B (alternative diagnosis or cause of severe sepsis), and Group C (high candidal score and positive BDG [>80 pg/mL] but without a confirmed diagnosis of IC).

View Article and Find Full Text PDF

Listeria monocytogenes is a facultative anaerobic intracellular Gram positive rod causing infection in pregnant women, extremes of age and immune-compromised hosts. In clinical specimens, the organisms may be gram-variable: laboratory misidentification of L. monocytogenes isolates as diphtheroids, streptococci, or enterococci is not uncommon and the isolation of a diphtheroid from blood or CSF should always alert the clinician to the possibility that the organism may be L.

View Article and Find Full Text PDF

Background: As the use of colistin to treat carbapenem-resistant Gram-negative infections increases, colistin resistance is being increasingly reported in Indian hospitals.

Materials And Methods: Retrospective chart review of clinical data from patients with colistin-resistant isolates (minimum inhibitory concentration >2 mcg/ml). Clinical profile, outcome, and antibiotics that were used for treatment were analyzed.

View Article and Find Full Text PDF

This experiment investigated the mechanisms of temporal fine structure (TFS) mediated speech recognition in multi-talker babble. The signal-to-noise ratio 50 (SNR-50) for naive-listeners was measured when the TFS was retained in its original form (ORIG-TFS), the TFS was time reversed (REV-TFS), and the TFS was replaced by noise (NO-TFS). The original envelope was unchanged.

View Article and Find Full Text PDF

We report the successful use of daptomycin in a child with methicillin-resistant Staphylococcus aureus endocarditis with persistent bacteremia and clinical deterioration, despite treatment with vancomycin and rifampicin. She had acute kidney injury, requiring daptomycin dosage adjustment.

View Article and Find Full Text PDF