In the daily medical work, the length of the aseptic package is affected by the packaging materials and the preservation environment [1, 2]. At present, most hospitals in China still use cotton cloth to package sterile bags. The literature [3] reported that the preservation period is valid for 1 to 2 weeks. Clinical preparation often occurs without use. Aseptic packages that exceed the expiration date need to be re-sterilized. This will increase the workload and increase the loss of the contents of the package, resulting in increased medical costs. Therefore, it is very important to extend the effective period for the purpose of increasing income and reducing expenditures and giving full play to limited medical and health resources in order to maximize cost efficiency. In our hospital from March 2004 to January 2005, we conducted a comparative study on the shelf life of 420 aseptic packages using vacuum packaging technology and conventional packaging technology to discuss the shelf life of vacuum packaging technology aseptic bags. These are reported below.
1 Materials and Methods
1.1 Materials
420 sterilized bags (each containing 1 piece of gauze, 2 cotton balls, 1 urinary catheter, 1 frog, 1 blade, 1 needle, 1 test tube), sterile polyethylene plastic 420 bags, 1 vacuum packing machine.
1.2 Methods
Sterilization package according to conventional high-pressure steam sterilization, drying, cooling, according to the requirements of the principle of asepsis technical operation, take a pack of 210 instantly pack a sterile polyethylene plastic bag (microwave sterilization), using vacuum packaging technology to seal the bag Mouth, this is the experimental group; the remaining 210 are control groups and routinely preserved. The two groups are stored together in a sterile cabinet. The two groups were regularly taken out of 30 packages for bacterial culture, cultured once in the second week, once in the first to fourth months, and then once every two months thereafter.
1.3 Criteria
The aseptically packaged articles were aseptically grown by bacterial culture in the laboratory, and the growth of the bacteria was unqualified.
1.4 Statistical Analysis
Data were collected for statistical analysis. The comparison of rates was performed using the two-sided Fisherexacttest probabilistic method. P<0.05 considered the difference statistically significant. All statistical data were completed by the SPSS11.0 software package.
2 results
Bacterial cultures were positive in the first month of storage in the control group (conventional storage), and bacterial cultures were positive in the sterile pack of the test group (vacuum package) at the 8th month of storage; From 1 to 8 months, the positive rates of bacterial culture in the two groups of packaging methods in the control group and the experimental group were significantly higher than those in the latter group. The difference between the two groups was statistically significant. The test results show that the vacuum packaging technology packs and preserves the aseptic package, which significantly prolongs the effective period of the aseptic package. The duration of aseptic packaging in the experimental group can be extended to 6 months.
3 Discussion
3.1 Routine Packing and Vacuum Packed Sterile Packs Bacterial Growth Causes
The results of this study showed that bacterial growth occurred in the 8th month of storage in a vacuum-packaged aseptic package, whereas bacterial growth occurred in the sterile package of the control group in the first month of storage. Domestic literature has reported that the first aid kit is sealed in an ordinary plastic bag and stored in the treatment vehicle for up to 157 days. Jiang Zhixia et al [4] used a plastic bag to seal the sterile bag after routine sterilization for 3 months. According to our material analysis, the bacterial culture was still negative after 6 months of storage in a vacuum-packed aseptic package; at the 8th month, although the vacuum-packed aseptic package was still mostly negative for bacterial culture, this When the bacterial culture positive rate is as high as 20, it is not appropriate to extend its shelf life. Therefore, I believe that the use of vacuum-packed sterile bags can last up to 6 months.
3.2 Cost-effectiveness of vacuum package aseptic package
The emergency department, operating room, and supply room in the hospital are equipped with tracheotomy kits, emergency kits, and phlebotomy kits for emergency patients or for extraordinary surgeries and extraordinary examinations. Unprepared and affect the rescue treatment of patients, endangering the lives of patients. The use of vacuum technology to package these sterile bags, making them stand-by for a longer time, is conducive to improving the quality of medical care, with good social benefits [5,6]. At the same time can save energy, reduce the loss of goods, save nurses repeated sterilization and sterilization, send packages, take the package time, according to cost accounting, a treatment package repeated disinfection and sterilization costs each about 10 yuan, according to my The hospital re-sterilized the treatment package every day for 50 calculations, which can save the cost of 182,500 yuan per year; therefore, the application of vacuum technology to package sterile bags has obvious economic benefits. It has been reported in the literature that the storage period of aseptic packages for extraordinary material packaging (leather, paper, nylon) can be extended to 12 months [7,8]. Bhumisirikul et al. [9] reported that the preservation period could be up to 96 weeks after autoclaving with double-layered linen or double-layered plastic paper. Due to the high cost of packaging materials for these methods, it has not yet been widely applied in China.
3.3 The key technology of vacuum package aseptic bag
The key aspect of this technology is that the sterilization package must be dried, cooled, and then vacuum packed. The aseptic package packaged using vacuum technology is stored for 8 months with bacterial growth. For the sake of caution, the sterility period can be set at 6 months. The method is simple, low-cost, and free of residual poisons, safe and reliable, and easy to carry. Applicable to all types of hospitals, with promotional value.
1 Materials and Methods
1.1 Materials
420 sterilized bags (each containing 1 piece of gauze, 2 cotton balls, 1 urinary catheter, 1 frog, 1 blade, 1 needle, 1 test tube), sterile polyethylene plastic 420 bags, 1 vacuum packing machine.
1.2 Methods
Sterilization package according to conventional high-pressure steam sterilization, drying, cooling, according to the requirements of the principle of asepsis technical operation, take a pack of 210 instantly pack a sterile polyethylene plastic bag (microwave sterilization), using vacuum packaging technology to seal the bag Mouth, this is the experimental group; the remaining 210 are control groups and routinely preserved. The two groups are stored together in a sterile cabinet. The two groups were regularly taken out of 30 packages for bacterial culture, cultured once in the second week, once in the first to fourth months, and then once every two months thereafter.
1.3 Criteria
The aseptically packaged articles were aseptically grown by bacterial culture in the laboratory, and the growth of the bacteria was unqualified.
1.4 Statistical Analysis
Data were collected for statistical analysis. The comparison of rates was performed using the two-sided Fisherexacttest probabilistic method. P<0.05 considered the difference statistically significant. All statistical data were completed by the SPSS11.0 software package.
2 results
Bacterial cultures were positive in the first month of storage in the control group (conventional storage), and bacterial cultures were positive in the sterile pack of the test group (vacuum package) at the 8th month of storage; From 1 to 8 months, the positive rates of bacterial culture in the two groups of packaging methods in the control group and the experimental group were significantly higher than those in the latter group. The difference between the two groups was statistically significant. The test results show that the vacuum packaging technology packs and preserves the aseptic package, which significantly prolongs the effective period of the aseptic package. The duration of aseptic packaging in the experimental group can be extended to 6 months.
3 Discussion
3.1 Routine Packing and Vacuum Packed Sterile Packs Bacterial Growth Causes
The results of this study showed that bacterial growth occurred in the 8th month of storage in a vacuum-packaged aseptic package, whereas bacterial growth occurred in the sterile package of the control group in the first month of storage. Domestic literature has reported that the first aid kit is sealed in an ordinary plastic bag and stored in the treatment vehicle for up to 157 days. Jiang Zhixia et al [4] used a plastic bag to seal the sterile bag after routine sterilization for 3 months. According to our material analysis, the bacterial culture was still negative after 6 months of storage in a vacuum-packed aseptic package; at the 8th month, although the vacuum-packed aseptic package was still mostly negative for bacterial culture, this When the bacterial culture positive rate is as high as 20, it is not appropriate to extend its shelf life. Therefore, I believe that the use of vacuum-packed sterile bags can last up to 6 months.
3.2 Cost-effectiveness of vacuum package aseptic package
The emergency department, operating room, and supply room in the hospital are equipped with tracheotomy kits, emergency kits, and phlebotomy kits for emergency patients or for extraordinary surgeries and extraordinary examinations. Unprepared and affect the rescue treatment of patients, endangering the lives of patients. The use of vacuum technology to package these sterile bags, making them stand-by for a longer time, is conducive to improving the quality of medical care, with good social benefits [5,6]. At the same time can save energy, reduce the loss of goods, save nurses repeated sterilization and sterilization, send packages, take the package time, according to cost accounting, a treatment package repeated disinfection and sterilization costs each about 10 yuan, according to my The hospital re-sterilized the treatment package every day for 50 calculations, which can save the cost of 182,500 yuan per year; therefore, the application of vacuum technology to package sterile bags has obvious economic benefits. It has been reported in the literature that the storage period of aseptic packages for extraordinary material packaging (leather, paper, nylon) can be extended to 12 months [7,8]. Bhumisirikul et al. [9] reported that the preservation period could be up to 96 weeks after autoclaving with double-layered linen or double-layered plastic paper. Due to the high cost of packaging materials for these methods, it has not yet been widely applied in China.
3.3 The key technology of vacuum package aseptic bag
The key aspect of this technology is that the sterilization package must be dried, cooled, and then vacuum packed. The aseptic package packaged using vacuum technology is stored for 8 months with bacterial growth. For the sake of caution, the sterility period can be set at 6 months. The method is simple, low-cost, and free of residual poisons, safe and reliable, and easy to carry. Applicable to all types of hospitals, with promotional value.