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Rajnish Gupta

Publications and source records attributed to Rajnish Gupta.

9 recordsLinked to original sources
PubMed2006

An informatics model for tissue banks--lessons learned from the Cooperative Prostate Cancer Tissue Resource.

BACKGROUND: Advances in molecular biology and growing requirements from biomarker validation studies have generated a need for tissue banks to provide quality-controlled tissue samples with standardized clinical annotation. The NCI Cooperative Prostate Cancer Tissue Resource (CPCTR) is a distributed tissue bank that comprises four academic centers and provides thousands of clinically annotated prostate cancer specimens to researchers. Here we describe the CPCTR information management system architecture, common data element (CDE) development, query interfaces, data curation, and quality control. METHODS: Data managers review the medical records to collect and continuously update information for the 145 clinical, pathological and inventorial CDEs that the Resource maintains for each case. An Access-based data entry tool provides de-identification and a standard communication mechanism between each group and a central CPCTR database. Standardized automated quality control audits have been implemented. Centrally, an Oracle database has web interfaces allowing multiple user-types, including the general public, to mine de-identified information from all of the sites with three levels of specificity and granularity as well as to request tissues through a formal letter of intent. RESULTS: Since July 2003, CPCTR has offered over 6,000 cases (38,000 blocks) of highly characterized prostate cancer biospecimens, including several tissue microarrays (TMA). The Resource developed a website with interfaces for the general public as well as researchers and internal members. These user groups have utilized the web-tools for public query of summary data on the cases that were available, to prepare requests, and to receive tissues. As of December 2005, the Resource received over 130 tissue requests, of which 45 have been reviewed, approved and filled. Additionally, the Resource implemented the TMA Data Exchange Specification in its TMA program and created a computer program for calculating PSA recurrence. CONCLUSION: Building a biorepository infrastructure that meets today's research needs involves time and input of many individuals from diverse disciplines. The CPCTR can provide large volumes of carefully annotated prostate tissue for research initiatives such as Specialized Programs of Research Excellence (SPOREs) and for biomarker validation studies and its experience can help development of collaborative, large scale, virtual tissue banks in other organ systems.

Databases as Topic↗
PubMed2004

Performance evaluation of APACHE II score for an Indian patient with respiratory problems.

BACKGROUND & OBJECTIVES: Realising the utility of scoring systems in mortality prediction of critically ill patients admitted to intensive care units (ICUs), studies worldwide have expressed a need to validate the Acute Physiology and Chronic Health Evaluation (APACHE) II score for databases of respective countries. Literature available in this area in the Indian context is scanty. The present study was undertaken to evaluate the performance of APACHE II score in prediction of mortality risk, as well as in determination of model validity in critically ill Indian patients with respiratory problems. METHODS: The study was prospectively carried out over 18 months at respiratory ICU of a tertiary Institute in New Delhi, which admitted consecutive medical (with lung ailments) and surgical (who had undergone any elective thoracic surgical procedure under general anaesthesia) patients. Based on chief indication of ICU admission, the medical patients were further divided into sub-groups I (respiratory) and II (non-respiratory). APACHE II points were assigned to all patients for calculating their individual predicted risks of mortality. Standard mortality ratio (SMR) was computed with 95 per cent confidence intervals (CI). Calibration of model was analysed by calculating Lemeshow and Hosmer goodness of fit X(2) statistic and by plotting calibration curve, whereas discrimination was evaluated by calculating area under a receiver operating characteristic (ROC) curve. RESULTS: Of the 393 consecutive patients admitted to respiratory ICU during the study period, 63 were left out on account of exclusion criteria. Mean APACHE II score of the remaining 330 patients was 12.87+/-8.25 and range from 1 to 47. There were 287 (87%) survivors and 43 (13%) non-survivors, whose mean APACHE II scores, being respectively 11.34+/-6.75 (range 1-37) and 23.09+/-10.01 (range 5-47), were significantly different (P<0.01). The study had a predicted mortality of 7.9 per cent and an SMR value of 1.65 (95% CI from 0.4 to 3.0). Mean APACHE II score of those having medical ailments was significantly higher (P<0.01) than surgical patients. The non-respiratory sub-group had a significantly higher (P<0.01) mean APACHE II score than respiratory sub-group. 59 per cent of patients did not get APACHE II points owing to being <45 yr of age. In addition, against 10 immunocompromised patients, 77 others did not get APACHE II points despite having apparently compromised immunity due to co-existence of tuberculosis (TB), diabetes mellitus, dual pathologies or past history of anti-TB treatment. Observed and predicted mortality rose with 5-point APACHE II score, but did not correlate for patients of any comparable group. Average ICU stay of 16 days for those with medical disease was significantly longer (P<0.01) than 9.5 days for surgical patients. APACHE II scoring system showed a poor calibration and discrimination ability for Indian respiratory patients. INTERPRETATION & CONCLUSION: Despite the rise in observed and predicted mortality with 5-point APACHE II score, predicted mortality did not correlate with observed mortality for critically ill patients admitted to an Indian respiratory ICU. The scoring system also showed a poor calibration as well as discrimination. The model may be more useful for Indian patients by lowering down the cut-off value in allotment of age points and by awarding the weightage to factor like co-existing immunocompromised state.

APACHE↗
PubMed2004

Automated clinical annotation of tissue bank specimens.

Modern, molecular bio-medicine is driving a growing demand for extensively annotated tissue bank specimens. With careful clinical, pathologic and outcomes annotation, samples can be better matched to the research question at hand and experimental results better understood and verified. However, the difficulty and expense of detailed specimen annotation is well beyond the capability of most banks and has made access to well documented tissue a major limitation in medical re-search. In this context, we have implemented automated annotation of banked tissue by integrating data from three clinical systems--the cancer registry, the pathology LIS and the tissue bank inventory system--through a classical data warehouse environment. The project required modification of clinical systems, development of methods to identify patients between and map data elements across systems and the creation of de-identified data in data marts for use by researchers. The result has been much more extensive and accurate initial tissue annotation with less effort in the tissue bank, as well as dynamic ongoing annotation as the cancer registry follows patients over time.

Clinical Laboratory Information Systems↗
PubMed2003

Directly observed treatment for tuberculosis.

Directly Observed Treatment-Short Course (DOTS) has been a successful strategy in the global control of tuberculosis (TB) in adults. However, reports of implementation are scantily available in pediatric context. Present article reviews diagnostic uncertainties of TB in children commonly faced by physicians on account of the vague clinical presentations, unreliable tuberculin tests or TB score charts, non-specific hematological, biochemical or radiological evidence, difficulty in sputum expectoration and non-availability or ill-affordability of specialised tests. It also describes therapeutic problems arising due to the physician's inexpertise, child's incomprehensibility and parental anxiety. DOTS was found to be highly effective in 930 Indian children having TB over the 6-year study period, during which, a rise in number of cases with adult pattern of disease was also noted. The trend change in pediatric TB scenario is thought to have taken place due to malnutrition so widely prevalent in this country. Irrespective of the changing trend, DOTS strategy was found to be effective for all types of pediatric TB. A need, therefore, exists for quick resolution of the programme issues related to pediatric drug dispensing, physicians' reservations about acceptance of strategy in this age-group, service-utilisation of DOTS providers for the selected cases unable to visit DOTS centres and giving executional priority to children during ongoing expansion of Revised National TB Control Programme (RNTCP) in country.

Adolescent↗
PubMedDate not supplied

Open lung biopsy in diffuse infiltrative lung disease with progressive dyspnoea: is it useful?

Eleven subjects, aged between 15 and 60 years, presenting with diffuse infiltrative lung disease (DILD) and progressive dyspnoea, underwent an open lung biopsy (OLB). The authors feel that OLB does give a confidence to the treating physician to begin with a specific therapy in the form of steroids. But, as a matter of fact, at most health care delivery centres in the country, facilities for OLB are not available. Hence, the specific therapy should be instituted presumptively following an overall suggestion of disease based upon the clinical, physiological (chiefly comprising the pulmonary function test or PFT) and the radiological criteria, so that progression of disease could be arrested at an early stage.

Adolescent↗
PubMedDate not supplied

Private-public mix: a prioritisation under RNTCP--an Indian perspective.

Success of the public directly observed treatment, short course (DOTS) programmes have been widely reported from various parts of the world and have been described from the Indian subcontinent as well. But, it is being increasingly realised that further DOTS successes can take place only by ensuring a private sector participation under the programme. While discussing behaviour-profile of patients, this review enumerates possible reasons for their averseness of a public health facility and preference for a private health. facility. Similarly, behaviour-profile of private health providers brings out the discrepancies in their clinical practices. Both types of profiles are supported with the studies from India and abroad. A comparison is drawn between available services of the public and private health facilities, with a focus on the need for prioritisation of a private-public mix (PPM) in the Revised National Tuberculosis Control Programme (RNTCP). Furthermore, the salient features of schemes recommended by the Directorate General of Health Services, New Delhi, for involvement of the private- practitioners, and the Non-Governmental Organisations are briefly outlined. The underlying obstacles for private sector participation in RNTCP and the projected solutions so as to effect a private-public mix in the Revised Programme are also dealt with. A description of few operating models, trying in the best possible manner to bring about a private sector participation in programme, is presented to make the readers aware of the efforts going on in that direction within the country. The private health sector, easily being a patient's first choice, needs to be integrally involved in RNTCP on a priority basis, feasibility of which, has been successfully documented in the operational trials conducted within the country so far.

Antitubercular Agents↗
PubMedDate not supplied

Accidental condom inhalation.

A 27-year-old lady presented with persistent cough, sputum and fever for the preceding six months. Inspite of trials with antibiotics and anti-tuberculosis treatment for the preceeding four months, her symptoms did not improve. A subsequent chest radiograph showed non-homogeneous collapse-consolidation of right upper lobe. Videobronchoscopy revealed an inverted bag like structure in right upper lobe bronchus and rigid bronchoscopic removal with biopsy forceps confirmed the presence of a condom. Detailed retrospective history also confirmed accidental inhalation of the condom during fellatio.

Adult↗
PubMedDate not supplied

A thyroid tubercular abscess and bilateral symmetrical hilar lymphadenopathy: a rare association.

An 18-year-old boy presented with a rare association of a thyroid tubercular abscess and bilateral symmetrical hilar lymphadenopathy. He was put on a Category I regimen with standard short course daily chemotherapy of four anti-tubercular drugs under the National Tuberculosis Programme. After a six-month of anti-tubercular treatment (ATT), the boy showed clinical and bacteriological improvement. The thyroid scan with Technetium 99 (Tc 99) and the chest skiagram also became normal.

Abscess↗