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Biomedical subjects

P Padmaja

Publications and source records attributed to P Padmaja.

At least 19 recordsLinked to original sources

Chryseobacterium meningosepticum--an uncommon pathogen causing adult bacterial meningitis.

Chryseobacterium meningosepticum is an uncommon pathogen causing meningitis. We report a case of adult meningitis caused by chryseobacterium meningosepticum in an 88 year old woman. Immunosuppression due to old age, diabetes mellitus and history of hypertension of 20 years duration were the concomitant factors. chryseobacterium meningosepticum was isolated both from the cerebrospinal fluid and blood cultures. This organism was sensitive to quinolones, rifampicin and resistant to many antibiotics commonly used for empiric therapy for meningitis.

Aged↗

Prosthetic valve endocarditis caused by Scedosporium apiospermum.

Scedosporium apiospermum, the asexual state of Pseudallescheria boydii, is increasingly recognized as an opportunistic pathogen. We report a case of prosthetic valve endocarditis caused by this organism that developed in a patient following cardiac surgery.

Adult↗

Aspergillus endocarditis presenting as femoral artery embolism.

Fungal valvular endocarditis is an unusual cause of endocarditis, yet very important because of its historically poor prognosis. We report two fatal cases of fungal valvular endocarditis following cardiovascular surgery, presenting as femoral artery embolism. Aspergillus terreus and A. flavus were the causative agents of endocarditis in the two patients. Diagnosis was established very early by culture of the emboli and was confirmed later by isolation of the same Aspergillus species from the resected valve tissue.

Antifungal Agents↗

Trichosporon loubieri infection in a patient with adult polycystic kidney disease.

A 45-year-old man from Nepal with a 13-year history of polycystic kidney disease was diagnosed as suffering from chronic renal failure with end-stage renal disease. After receiving empirical antituberculosis treatment, he was treated with broad-spectrum antibiotics. A left nephrectomy was performed, and after 4 months, he received a kidney transplant. The left kidney was grossly enlarged, with multiple cystic spaces filled with blackish material. Histologic examination of the excised left kidney tissue stained with hematoxylin and eosin and Gomori's methenamine silver stains showed numerous hyaline, septate, fungal hyphae of various lengths, many broken into rectangular arthroconidia in the cystic spaces. Culture of the kidney tissue yielded white, glabrous, yeast-like colonies. Based on its micromorphology, growth at 42 degrees C, and ribosomal DNA (rDNA) sequence analysis, and also sequence analysis of the internal-transcribed-spacer and D1/D2 rDNA regions, the yeast was identified as Trichosporon loubieri. Postsurgically, the patient was treated with amphotericin B and oral itraconazole, followed by maintenance therapy with fluconazole. He remained afebrile and asymptomatic. At the final follow-up, all parameters were found normal and the patient was doing well, with normal renal function reports. This paper presents the first known case of human infection caused by T. loubieri.

Adult↗

Rhodotorula rubra.

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Aortic Valve Insufficiency↗

Nocardia asteroides mediastinitis complicating coronary artery bypass surgery.

A 63 years diabetic male was admitted with mediatinitis and sternal dehiscence. Nocardia asteroides sensu stricto Type VI was isolated from the mediastinal tissue and fluid during debridement. Prompt surgical intervention and treatment with ofloxacin both intravenously and later orally led to the cure.

Coronary Artery Bypass↗

Coccidioidomycosis in India: report of a second imported case.

We describe a fatal case of imported coccidioidomycosis in India in a 22-year-old male who worked in Tucson, Arizona, approximately four years prior to his illness. The diagnosis was based on the presence of characteristic spherules with endospores in biopsy tissue of lymph nodes, bone and pus from a chronic discharging sinus in the left gluteal region and isolation of Coccidioides immitis in culture. C. immitis is one of the most infectious and virulent fungal pathogens and poses a serious occupational hazard for laboratory personnel, especially in areas where the disease is not endemic. To reduce the role of laboratory-acquired infection, all procedures that involve manipulation of cultures of C. immitis should, whenever possible, be conducted in a biological safety cabinet.

Arizona↗

Sclerosing mediastinitis caused by Aspergillus terreus.

A case of Aspergillus terreus causing sclerosing mediastinitis which presented with symptoms of cardiorespiratory compromise and compressive myelopathy is described. The diagnosis was established by culturing and isolating the fungus in pure culture from the tissue and was also confirmed by demonstration of sepcific precipitating antibodies against Aspergillus terreus in patient's serum.

Adult↗

Rapid identification of fluconazole resistance using Chrom agar Candida.

All though extremely rare 10 years ago, antifungal drug resistance is becoming a major problem in certain populations, especially in those infected with HIV. This study was undertaken to study the resistance of Candida species isolated in our hospital to Fluconazole using Chrom agar Candida. The Candida strains which were routinely isolated from clinical specimens like blood, urine, sputum, pus, fluid and homograft isolates were included in the study. 142 Candida isolates were tested by using Chrom agar Candida incorporated with Fluconazole. 16 strains were found to be resistant to Fluconazole and 126 strains sensitive to Fluconazole. Nine were C. tropicalis, 3 C. krusei, 2 C. guillermondii, 1 Geotrichum candidum and one was an unidentified strain of Candida. The MIC of the 16 strains were done using RPMI 1640 medium by macro broth dilution method. MIC of 9 strains was 64 & > 64 ug/ml of 6 strains 32 ug/ml and 1 strain 16 ug/ml.

Agar↗

Prevalence, species distribution and antifungal sensitivity of vaginal yeasts in infertile women.

A total of 326 high vaginal swabs from infertile women attending the Institute of Reproductive Medicine were cultured from June 1999 to May 2000. Candida species was isolated from 42(12.88%) patients. Candida albicans (40.47%) followed by Candida glabrata (38.09%) were the most common isolates. Other species included Candida tropicalis (14.28%) and Candida krusei (7.14%). All isolates were tested for sensitivity by disc diffusion method on Yeast Nitrogen Agar base towards four antifungals. Seven (16.7%) candida strains showed resistance to Fluconazole and 19(45.23%) of the strains showed resistance to Itraconazole, and 4(9.5%) strains showed resistance to Nystatin. There was no resistance to Amphotericin B. Of the 7 strains resistant to Fluconazole, 3 were Candida krusei, 3 were Candida glabrata and 1 was Candida tropicalis.

Adult↗

Vaginal carriage of group B Streptococcus in infertile women.

From May, 1999 to April, 2000, 256 high vaginal swabs were culture from asymptomatic infertile women attending the out-patient department of the Institute of Reproductive Medicine. 41 strains of Streptococcus agalactiae were isolated from 33 patients (12.89%). Five patients had repeated isolations even after adequate therapy.

Adult↗

Rapid identification of fluconazole resistance using Chromagar Candida.

Although extremely rare 10 years ago, antifungal drug resistance is becoming a major problem in certain populations, especially in those infected with HIV. This study was undertaken to study the resistance of Candida species isolated in our hospital to Fluconazole using Chrom agar Candida. The Candida strains which were routinely isolated from clinical specimens like blood, urine, sputum, pus, fluid and homograft isolates were included in the study. 142 Candida isolates were tested by using Chrom agar Candida incorporated with fluconazole. 16 strains were found to be resistant to Fluconazole and 126 strains sensitive to Fluconazole. Nine were C tropicalis, 3 C krusei, 2 C guillermondii, 1 Geotrichum candidum and one was an unidentified strain of Candida. The MIC of the 16 strains were done using RPMI 1640 medium by macro broth dilution method. MIC of 9 strains was 64 & > 64 micrograms/ml of 6 strains 32 micrograms/ml and 1 strain 16 micrograms/ml.

Antifungal Agents↗

Central venous catheter related infections.

Infusion therapy carries a substantial risk of producing iatrogenic sepsis, bacteremia or fungemia originating from the device used for vascular access or from the contaminated infusate. This study, a semiquantitative assay of the central venous catheter tips (CVC) was carried out and correlated with the blood culture results to determine the probable cause of sepsis in our post operated patients. One thousand six hundred and thirty one surgeries were performed in the Institute of Cardio-Vascular Diseases from January to December 1997. We received 150 CVC tips which were in place for more than five days for culture. Fifty one (51) CVC tips showed growth in either contents or roll. There was associated blood stream infection in 23 patients. The age groups of patients ranged from two months to 67 years and male to female ratio was 109:41. Children below the age of 12 years were 62 in number. Candida spp. (32.4%) and Staphylococcus spp. (33.9%) formed the predominant isolates from the CVC tips.

Bacterial Infections↗

Nasal carriage of methicillin resistant Staphylococcus aureus in a cardiovascular tertiary care centre and its detection by Lipovitellin Salt Mannitol Agar.

Ecological niches of Staphylococcus aureus are the anterior nares. Carriage of Staphylococcus aureus in the nose appears to play a key role in the epidemiology and pathogenesis of infection. Numerous studier have shown that elimination of nasal carriage using Mupirocin also eliminated hand carriage and the spread of infections in hospitals. Lipovitellin-Salt-Mannitol Agar was used for screening, isolation and presumptive identification of Staphylococcus aureus from nasal carriers. From November; 97 to August'98, 724 nasal swabs were cultured and 18.23% of health care workers were found to be nasal carriers of Staphylococcus aureus. Of these 12.15% were carriers of MRSA. The carrier rate was highest in December' 97 (32.07%). All MRSA carriers were treated with local application of Mupirocin for three days. A study of the antibiogram of the clinical isolates during the corresponding period showed 100% susceptibility of MRSA to Vancomycin. Susceptibility of MRSA to Clindamycin, Netilmycin, Rifampicin & Ofloxacin was 86.6%, 69.5%, 66% & 64.7% respectively.

Bacteriological Techniques↗