Comparison of Applicability Test of Sterile Examination Method for Artemether Injection / 中国药师

Objective:To develop a more suitable sterile examination method for artemether injection in order to control its quality better. Methods:The direct inoculation and the membrane filtration was respectively used for the sterile examination of artemether in-jection. Results:In the direct inoculation method, Staphylococcus aureus, Bacillus subtilis and Clostridium perfringens grew well in the test tubes containing artemether injection in 24 h, and Escherichia coli, Aspergillus niger and Candida albicans grew well in 48 h. In the membrane filtration method, Staphylococcus aureus grew well in 24 h in the test group containing artemether injection, and the other 5 strains grew well in 48 h. Conclusion:The positive strains can grow well in the applicability test of both methods. However, due to the simpler operation and higher accuracy of membrane filtration method, it is recommended to be used for the sterile test of artemether injection.

Comparison of Applicability Test of Sterile Examination Method for Artemether Injection / 中国药师

Objective:To develop a more suitable sterile examination method for artemether injection in order to control its quality better. Methods:The direct inoculation and the membrane filtration was respectively used for the sterile examination of artemether in-jection. Results:In the direct inoculation method, Staphylococcus aureus, Bacillus subtilis and Clostridium perfringens grew well in the test tubes containing artemether injection in 24 h, and Escherichia coli, Aspergillus niger and Candida albicans grew well in 48 h. In the membrane filtration method, Staphylococcus aureus grew well in 24 h in the test group containing artemether injection, and the other 5 strains grew well in 48 h. Conclusion:The positive strains can grow well in the applicability test of both methods. However, due to the simpler operation and higher accuracy of membrane filtration method, it is recommended to be used for the sterile test of artemether injection.

Direct inoculation on Phoenix panels for identification and antimicrobial susceptibility from positive BACTEC cultures: First study from India.

Purpose: This was a prospective study planned in a super-specialty hospital in Delhi to reduce turnaround times of identification-susceptibility results of positive blood cultures. Materials and Methods: One hundred consecutive single morphology non-duplicate cultures were inoculated on Becton Dickinson Phoenix™ panels by growth recovered directly from liquid BACTEC™ media and after pure growth on solid media. Results: Complete concordance was observed in 72.4% of gram-negative and 45.8% of gram-positive isolates. For gram-negative isolates, categorical agreement (CA) was >83% and essential agreement (EA) was >96% among all antibiotics tested, very major errors (VME) were 0.13%, major errors (ME) 0.54%, and minor errors (MiE) were 3.01%. For gram-positive isolates, VME was 0.73%, 1.10% MiE and no ME. It was observed that average time from receipt of specimen to release of reports was 30:34 h and 32 h for gram-negative and gram-positive isolates if reports of "Direct" panels were to be released. Conclusions: By direct panel inoculation, a decrease of at least 18-20 h in turnaround time was observed compared with the standard method. This helps early change to effective antibiotic therapy and also reduces the expenditure incurred for a patient's hospital stay by average Rs 20,000 ($443) per day.

Evaluation of MicroScan and Phoenix System for Rapid Identification and Susceptibility Testing Using Direct Inoculation from Positive BACTEC Blood Culture Bottles / 대한진단검사의학회지

BACKGROUND: Procedures for rapid identification and susceptibility testing by direct inoculation (DI) from positive blood culture bottles into an automated system have not been standardized. This study was purposed to evaluate DI from BACTEC 9240 blood culture system (BD, USA) into MicroScan (Dade Behring, USA) or Phoenix (BD, USA). METHODS: From May to June 2006, bacterial pellets from positive aerobic bottles showing gram-positive cocci (GPC) or gram-negative rods (GNR) of single morphology were directly inoculated to MicroScan PosCombo1A and NegCombo32 and to Phoenix PMIC/ID-107 and NMIC/ID-53. In addition, the automated instruments were also inoculated from subcultures (standard inoculations, SI). Species identification and susceptibilities were compared between DI and SI and between MicroScan and Phoenix. RESULTS: A total of 108, 104, and 78 specimens were tested with MicroScan, Phoenix, and both, respectively. When DI and SI were matched, 94.8% of GPC were correctly identified with MicroScan, compared to 80.7% with Phoenix, and 93.9% of GNR were correctly identified with MicroScan, compared to 95.7% with Phoenix. DI with MicroScan and Phoenix showed correct susceptibilities in 94.6% of 1,150 and 96.5% of 660 tests (with very major error [VME] of 1.1% and 1.1%), respectively, among GPC and in 94.4% of 942 and 96.3% of 781 tests (with VME of 0.6% and 0%), respectively, of GNR. Correlation of identification/susceptibilities between MicroScan and Phoenix using DI were 81.8%/98.0% for Staphylococcus aureus and 100.0%/95.6% for Escherichia coli. CONCLUSIONS: DI warrants a reliable method for identification and susceptibility testing of both GPC and GNR in MicroScan, and those of only GNR in Phoenix.