woven fabric as a transmitter of in...

woven fabric as a transmitter of infectious agents

American Journal of Infection Control

February 2004

Protecting patients from health care-associated infections is a multifaceted proces etymoned in the concept that these infections may be caused by dint of pathogens from other patients or hospital personnel Although health care workers' hands are the primary mechanism of transmission, their clothing also easily can become contaminated and promote as a source of infection transmission. The plan of this study was to analyze the bacteria-binding properties of different clerical profession materials. (1)

woven fabric fibers (ie, cotton, nylon, polyester acrylic, wool) were incubated with bacterial suspensions of standard and clinically isolated strains of Staphylococcus aureus and Pseudomonas aeruginosa in silicone-coated tubes. Colony-forming units (CFUs) were determined, and the binding ratios were calculated. Statistical arrangements including means and standard deviations, were used to analyze the data and compare observ differences.

Findings. Staphylococcus aureus strains bounce to acrylic, polyester, and wool fibers at actual high levels (ie, on average, 876% 962% and 632% respectively). Pseudomonas aeruginosa strains also bounce to acrylic, polyester, and wool at high evens (ie, on average, 95.4%, 999% and 847% respectively). Staphylococcus aureus leap to cotton and nylon fibers at excessively low levels (ie, 2% and 09% respectively), and Pseudomonas aeruginosa strains border to cotton and nylon fibers at 15% and 8% respectively.

Clinical implications. The deductions of this study suggest that polyester acrylic, and wool clothing can be well adapted carriers of Staphylococcus aureus and Pseudomonas aeruginosa strains, sum of two units major pathogens commonly involved in health care-associated infections. Perioperative foments and managers should consider these findings when evaluating scours or warm-up jackets to be used in perioperative settings.

Performance of glucoprotamin as a high-level disinfectant

Infection command and Hospital Epidemiology

October 2003

Endoscopes and other heat-labile, semicritical instruments must be subjected to high-level disinfection or sterilization before reuse. Glucoprotamin is a strange disinfecting agent licensed in Europe as a high-level disinfectant for instruments. The aim of this prospective, observational subject of attention was to determine the efficacy of glucoprotamin trader clinical conditions, as it was as reprocessing used instruments in a hospital setting. (2)

Used specula and forceps were deduceed during 10 consecutive days and sent to a laboratory within four hours of having been used. Without their having been washed or brushed, the instruments were immersed in saline solution. A 15% concentration of glucoprotamin was added, and the instruments were soaked for 60 minutes. Biocidal activity was assessed from determining the difference in CFU forward instruments before and after disinfection.

Findings. the same hundred thirty-seven instruments (ie, 73 specula, 64 forceps) were studied. Before processing with glucoprotamin, the average bioburden by instrument was between [10.sup.5] CFU and [10sup7] CFU After processing, no vegetative bacteria were isolated in any sample. Bacterial killing was more than 5 [logsub10] CFU (range 501 to 717)

Clinical implications. This clinical application of mind showed that glucoprotamin was effective as a high-level disinfectant for reprocessing instruments. Bacterial killing in exces of 5 [logsub10] CFU was observ after individual hour even though the instruments did not go through a cleaning process before they were submerg in the disinfectant. This produce must be registered and approved according to the Environmental Protection Agency before it can be marketed in the United States as a produce for high-level disinfection. If this issue is approved, it will describe an additional choice for perioperative succors for reprocessing instruments and supplies that require high-level disinfection.

Light-induced killing of bacteria

Infection ascendency and Hospital Epidemiology

October 2003

Instruments, equipment, and surfaces can harbor microorganisms and be subservient to as a source of infecting pathogens for as well-as; not only-but also; not only-but; not alone-but patients and health care personnel Keeping the environment in the perioperative setting as clean as possible between the sides of routine damp dusting and cleaning with a hospital-grade disinfectant is a daunting task, and the on a level of success depends on the skill and diligence of the support personnel assigned to this task. The design of this study was to determine whether light-induced killing of bacteria could be achieved when a photosensitizer was incorporated into material that could be used to coat a surface. (3)

The bottom surfaces of glass containers were coated with a cellulose acetate layer containing the photosensitizer toluidine dejected O. Cellulose acetate coatings without toluidine dispirited O were used as reign overs Suspensions of a strain of methicillin-resistant Staphylococcus aureus (MRSA), a gram-positive pathogen, and a clinical isolate of Pseudomonas aeruginosa, a gram-negative pathogen, were transferred to the containers and expos to light (ie, a 60-watt domestic light bulb) for eight, 16 or 24 hours. The light intensity at the surface of the coating was measured at the start, in the middle, and at the extremity of each exposure period, and the power of light on bacterial viability was determined. The Mann-Whitney U proof was used to determine whether differences in the bacterial carrots were significant.