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PubMed1997

[Occupational medicine significance of hepatitis C in health care employees].

Transmission of Hepatitis C virus (HCV) is similar to the one observed with hepatitis B virus. The most important route of infection in health care personnel is by needlestick injury. In the course of a literature review 44 publications on HCV prevalence or incidence among hospital employees were studied and an overall transmission incidence of 2.2% was found. As none of the publications dealt with the problem of chronic Hepatitis C, 245 persons with elevated transaminases occupied Freiburg University Hospital were tested for HCV antibodies. 3 out of 82 non-medical professionals and 19 out of 163 health care workers were anti HCV positive (RR = 3.22; p < 0.05). Charwomen in medical departments, nurses and dentists had a higher relative risk than physicians and technical assistants. As no HCV vaccine is available the only way of HCV-prevention is compliance with universal precautions.

Adult↗
PubMed1998

Intervention for medical students: effective infection control.

Needlestick injuries, which lead to the transmission of hepatitis B, hepatitis C, and the AIDS virus, are a potentially serious threat to students during their clinical experiences. Exposure to infectious diseases, blood, and hazardous body fluids is one of the most frequently reported injury events by medical students at a health science center in the southwestern region of the United States. This study was conducted to determine the effectiveness of a customized intervention about infection control for second-year medical students (N = 200). Preparation for the intervention included a needs assessment, which included both qualitative and quantitative research methods that incorporated input from fourth-year medical students, medical staff members, and local hospital infection control specialists. The intervention included a pretest, a lecture, a demonstration of standard precautions and infection control procedure with 2 clinical scenarios, an exercise on proper handwashing, and a posttest. The evaluation of the intervention demonstrated a significant increase in posttest knowledge scores about infection control (from 12.6 +/- 2.1 pretest to 16.5 +/- 1.8 posttest, P < .001). Medical students showed a significant knowledge increase about infection control after participating in the intervention . Thus we recommend that all medical colleges and universities develop and evaluate a similar customized intervention for their medical students.

Adult↗
PubMed2002

Needlestick transmission of hepatitis C.

Hepatitis C virus (HCV) transmission following a needlestick is an important threat to health care workers. We present the case of a 29-year-old medical intern who sustained a needlestick injury from a source patient known to be infected with both human immunodeficiency virus and HCV. The case patient subsequently developed acute HCV infection. The optimal strategy for diagnosing HCV infection after occupational exposures has not been defined. At a minimum, HCV antibody and alanine aminotransferase testing should be done within several days of exposure (to assess if the health care worker is already infected with HCV) and 6 months after percutaneous, mucosal, or nonintact skin exposure to blood or infectious body fluids from an HCV-infected patient. Currently, it is not possible to prevent HCV infection after exposure. However, recent data suggest that early treatment of acute HCV infection with interferon alpha may be highly effective in preventing chronic HCV infection. These data underscore the importance of identifying persons with acute HCV infection and promptly referring them to experienced clinicians who can provide updated counseling and treatment.

Accidents, Occupational↗
PubMed2006

Susceptibility of healthcare workers in Kenya to hepatitis B: new strategies for facilitating vaccination uptake.

Hepatitis B virus (HBV) infection is preventable, yet many healthcare workers (HCWs) in resource-poor countries remain at risk. The aims of this study were to evaluate the susceptibility of HCWs in a Kenyan district to HBV infection, and the feasibility of expanding the Extended Programme of Immunization (EPI) for infants to incorporate hepatitis B vaccination of HCWs. HCWs in Thika district, Kenya were invited to complete an interviewer-administered questionnaire about their immunization status and exposure to blood or body fluids. Participants were asked to provide a blood sample to assess natural or vaccine-induced protection against HBV. All non-immune HCWs were offered hepatitis B vaccination. Thirty percent (168/554) of HCWs reported one or more needlestick injuries (NSIs) in the previous year, with an annual incidence of 0.97 NSIs/HCW/year. Only 12.8% (71/554) of HCWs had received vaccination previously and none had been screened for immunity or for hepatitis B surface antigen. In total, 407 staff provided blood samples; 41% were HBV core antibody, 4% expressed hepatitis B surface antibody from previous vaccination, and 55% were unprotected. Two hundred and twenty-two staff were eligible for vaccine delivered through the EPI infrastructure. Self-motivated uptake of a full course of vaccine was 92% in the smaller health centres and 44% in the district hospital. This study demonstrates the importance of hepatitis B vaccination of HCWs in parts of Africa where high exposure rates are combined with low levels of vaccine coverage. High rates of vaccination can be achieved using childhood immunization systems for the distribution of vaccine to HCWs.

Adult↗
PubMed2000

Inhibition of needlestick-induced simulated viremia by local measures.

BACKGROUND: The possibility of confinement of simulated retrovirus to the inoculation site after needlestick injuries to enhance chances of local intervention and function of lymphaticovenous communications was investigated. METHODS: Using the canine model, technetium-99 m sulfur colloid particles were injected subcutaneously and into the vein and lymphatics. Blood and lymph were collected at a higher level from the femoral vein and the major lymphatic. Flow rates, particle arrival times, concentrations, and other variables were evaluated for 45 minutes by gamma counting. A tourniquet was used to slow dissemination after subcutaneous injection. RESULTS: After subcutaneous inoculation, particles arrived in the blood at 2.81 +/- 0.54 minutes and in the lymph at 6.0 +/- 1.47 minutes. Application of a tourniquet delayed appearance in the blood to 7.11 +/- 1.5 minutes and in the lymph to 40.0 +/- 5.1 minutes. Concentration of particles in lymph was 1,000 times higher than in the blood. Flux values were comparable in both pathways, but accumulation patterns were different. After intravenous injection, particles arrived in lymph at 25.4 +/- 6.44 minutes. After intralymphatic injection particles arrived in the blood within 4 seconds. CONCLUSIONS: There are functional lymphaticovenous communications at the peripheral level. The period between virus inoculation and blood and lymph invasion may be extended by application of a tourniquet; therefore, time could be gained for local intervention.

Animals↗
PubMed2003

Occupational blood and body fluids exposures in health care workers: four-year surveillance from the Northern France network.

The risk of accidental blood and body fluid (BBF) exposure is a daily concern for health care workers throughout the world, and various strategies have been introduced during the past decade to help reduce that risk. To assess the impact of multifocal reduction strategies introduced in hospitals affiliated with the Northern France network, we recently examined data from 4 years of BBF-exposure reports filed by network employees. A total of 7,649 BBF exposures were reported by health care workers to occupational medicine departments in 61 hospitals. Nurses and nursing students accounted for 4,587 (60%) of exposures, followed by nurses' aides and clinicians. Most (77.6%) of the reports were related to needlestick injury (NSI). In addition, we examined BBF exposure trends over time by analyzing data from 18 hospitals (29.5%) with data available for the time period of 1995 to 1998. These were assessed in nurses, who have the highest and most consistent reporting rate. We noted that the BBF-exposure incidence rate for all BBF exposures in nurses decreased from 10.8 to 7.7 per 100 nurses per year between 1995 and 1998 (P <.001), whereas the NSI rate decreased 8.9 per 100 nurses per year in 1995 to 6.3 in 1998 (P <.001). The percentage of NSIs that resulted from noncompliance with universal precautions also decreased significantly (P =.04). Widespread improvements in procedures and engineering controls were implemented in the Northern France network before and during the study period. Significant reductions were observed in reports of BBF exposures and NSIs, particularly in nurses. These findings are similar to those in other countries and reflect the overall improvement in the management of occupational risk of BBF in health care workers.

Adult↗
PubMedDate not supplied

A comparative user evaluation of three needle-protective devices.

Needlestick injuries (NSI) can result in healthcare workers being exposed to blood-borne viruses. Between 1997 and 2002, three healthcare workers in the UK have seroconverted to hepatitis C and one to human immunodeficiency virus (Public Health Laboratory Service (PHLS), 2003). Experience both in the UK and the USA suggests that even robust educational strategies may be insufficient to reduce the number of occupationally acquired NSI (Jagger et al, 1988). Needle-protective devices have now become more widely available and several studies have demonstrated an associated reduced risk of NSK. It is, however, essential that the devices are appropriately evaluated before introduction to ensure that they meet user requirements, do not interfere with function and reduce NSI risk. This article describes an evaluation programme carried out at the University Hospital Birmingham, UK. The programme focused on three key areas: safety, usability and compatibility. Results demonstrated that nurses rapidly adapt their practices to use the new safety devices and the study highlighted key education requirements that would be required before implementation. In addition, without this evaluation, it would not have been identified that attachment of the safety needles to the syringes requires a push-and-twist method or the use of LuerLok syringes to prevent detachment on activation of the safety procedure

Humans↗
PubMed2000

HIV postexposure prophylaxis for children and adolescents.

HIV postexposure prophylaxis (PEP) is now a well-established part of the management of health care workers after occupational exposures to HIV. Use of PEP for adults exposed to HIV after sexual contact or injection drug use in nonoccupational settings remains controversial with limited data available. There is even less information available concerning HIV PEP for children and adolescents after accidental needlestick injuries or sexual assault. The objective was to describe the current practice of and associated problems with HIV PEP for children and adolescents at an urban academic pediatric emergency department. A retrospective review of all children and adolescents offered HIV PEP between June 1997-June 1998 was conducted. Ten pediatric and adolescent patients were offered HIV PEP, six patients after sexual assault, four patients after needle stick injuries. There were two small children 2 and 3 years of age and eight adolescents. Of these 10 patients, eight were started on HIV PEP. The regimens used for PEP varied; zidovudine, lamivudine, and indinavir were prescribed for in seven patients and zidovudine, lamivudine, and nelfinavir for one other. All 10 patients were HIV negative by serology at baseline testing and all available for follow-up testing (5 of 10) remained HIV negative at 4 to 28 weeks. Only two patients completed the full course of 4 weeks of antiretroviral therapy. Financial concerns, side effects, additional psychiatric and substance abuse issues as well as the degree of parental involvement influenced whether PEP and clinical follow-up was completed. HIV PEP in the nonoccupational setting for children and adolescents presents a medical and management challenge, and requires a coordinated effort at the initial presentation to the health care system and at follow-up. The difficulties encountered in the patients in our series need to be considered before initiating prophylaxis. A provisional management approach to HIV PEP in children and adolescents is proposed.

Academic Medical Centers↗
PubMed2002

Efficacy of catheter needles with safeguard mechanisms.

There has been considerable interest in using safeguarded needles to reduce needlestick injury. In a randomised design, we studied the efficacy and safety of two such needles (the Insyte AutoGuard and the Protective Acuvance), by comparing them with a conventional catheter needle (Insyte), for intravenous cannulation (18 G) in 150 patients and for intra-arterial cannulation in another 150 patients (20 G). For intravenous cannulation, the success rates were similar in the three groups but insertion of the AutoGuard or Acuvance catheter was significantly more difficult than the conventional catheter. For the Acuvance, the back-flow of blood into the chamber was sometimes too slow. For intra-arterial cannulation, insertion of the AutoGuard was significantly more difficult than the other two devices, mainly because the backflow chamber of the AutoGuard was too short so that the chamber often filled with blood before cannulation. Insertion of the Acuvance was significantly more difficult than the conventional catheter. For both intravenous and intra-arterial insertion, handling of the withdrawn needle was judged significantly safer in the AutoGuard group than the other two groups, whereas there was no significant difference in the safety between the Acuvance and conventional groups. In five subjects from the AutoGuard group, blood splashed on retraction of the needle. Blood contamination during needle withdrawal occurred frequently in the control and Acuvance groups, but rarely occurred in the AutoGuard group. Therefore, the AutoGuard needle is more suitable for intravenous cannulation, and the Acuvance is more suitable for intra-arterial cannulation.

Adolescent↗
PubMed2004

Risk of glove perforation in minor and major plastic surgery procedures.

BACKGROUND: Incidental needlestick injury with exposure of blood pathogens has a high incidence among health care workers. Because plastic surgeons make up an important risk group for this type of accident, this study sought to evaluate the incidence of glove perforation during minor and major plastic surgery procedures. METHODS: Evidence of glove perforation was evaluated for 390 gloves after 100 consecutive minor surgical procedures and for 710 gloves after 100 consecutive major surgeries using Maffuli's test. An index based on the number of first assistant's glove perforation and the surgical time was created to compare these accidents associated with both types of procedures. RESULTS: Glove perforations were found in four gloves (1.02%) after minor surgery and 76 gloves (21.40%) after major surgery. During minor surgeries, the assistant was more likely to have exposure than the surgeon. During major surgery, the surgeon experienced more glove perforations (59.21%) than the assistant (40.79%). The most common location of perforations was the palmar face of the left hand in both groups. The surgeons did not notice these perforations at any time. The duration of the minor procedures varied from 10 to 30 min (average, 17.55 min), whereas the time of major procedures ranged from 1 to 6 h (average, 186 min). There was no statistical significant difference in the perforation's index between minor and major procedures. CONCLUSIONS: The risk of perforation to the surgeon's glove during minor surgery is minimal. The frequency of perforation to the first assistant's glove is similar between minor and major plastic surgery procedures.

Brazil↗
PubMed1996

Effectiveness of a jet injection system in administering morphine and heparin to healthy adults.

BACKGROUND: Jet injection eliminates the risk of contaminated needlestick injuries when giving intramuscular or subcutaneous medications. Clinical efficacy of the Biojector System was equivalent to that of needle and syringe injection in unpublished trials with vaccines, but had not been studied using other drugs. OBJECTIVE: To compare the effectiveness of the Biojector with conventional needle and syringe injection in administering intramuscular morphine and subcutaneous heparin to healthy adults, as measured by plasma drug concentration. METHODS: Intramuscular injections of morphine 8 mg (5 mg if weight < or = 65 kg) were given 24 hours apart with the jet injector and with a needle and syringe to 30 subjects at the deltoid site and 10 subjects at the dorsogluteal site. Blood samples for plasma concentrations of free morphine were drawn at 15, 30, 45, 60, 120, and 240 minutes and were analyzed using radioimmunoassay. Abdominal subcutaneous injections of heparin 3500 U were given every 8 hours for 5 days with both injection methods to 29 subjects, with 48 hours between the two series. Daily blood samples for plasma heparin were analyzed by colorimetric assay for antifactor Xa activity. RESULTS: Mean free morphine concentration, peak value, and area under the curve did not differ significantly between the deltoid and dorsogluteal sites or between the jet injector and needle and syringe. Values of mean daily heparin concentrations and area under the curve were low and did not differ between the two injection methods. CONCLUSION: Plasma drug concentrations provided by the Biojector were equivalent to those provided by conventional needle and syringe when administering intramuscular morphine and low-dose subcutaneous heparin.

Adult↗
PubMedDate not supplied

Trends in injuries, illnesses, and policies in Canadian healthcare workplaces.

BACKGROUND: Analysis of workers' compensation data and occupational health and safety trends in healthcare across Canada was conducted to provide insight concerning workplace injuries and prevention measures undertaken in the healthcare sector. METHODS: Timeloss claims data were collected for 1992-2002 from the Association of Workers' Compensation Boards of Canada. Labour Force data from Statistics Canada were used to calculate injury rates. The Occupational Health and Safety Agency for Healthcare in British Columbia coordinated with provincial occupational health and safety agencies in Ontario, Quebec and Nova Scotia to analyze injury data and collate prevention measures in their regions. RESULTS: The national timeloss injury rate declined from 4.3 to 3.7 injuries per 100 person-years since 1998. Musculoskeletal injuries consistently comprised the majority of timeloss claims. Needlestick injuries, infectious diseases and stress-related claims infrequently resulted in timeloss claims although they are known to cause great concern in the workplace. Prevention measures taken in the various provinces related to safer equipment (lifts and electric beds), return-to-work programs, and violence prevention initiatives. Different eligibility criteria as well as adjudication policies confounded the comparison of injury rates across provinces. DISCUSSION: Since 2000, all provinces experienced healthcare restructuring and increased workload in an aging workforce. Despite these increased risks, injury rates have decreased. Attribution for these trends is complex, but there is reason to believe that focus on prevention can further decrease injuries. While occupational health is a provincial jurisdiction, harmonizing data in addition to sharing data on successful prevention measures and best practices may improve workplace conditions and thereby further reduce injury rates for higher risk healthcare sector occupations.

Accidents, Occupational↗
PubMed1990

Assessing the risk of occupational acquisition of the human immunodeficiency virus: implications for hospital policy.

In determining infection control policy, it is essential to quantitatively assess the risk of transmission of human immunodeficiency virus (HIV) to health care workers and their families. The risk should be placed in perspective by comparing it with other occupational hazards. The risk of seroconversion from a needlestick injury can be calculated from the probability of a needlestick occurrence, the probability that the source patient is infected, and the probability of seroconversion, given an exposure. The risk of seroconversion due to drawing 1000 blood specimens from seropositive patients is between 86 and 470 in 100,000. The risk to surgeons from performing 25 operations on infected patients is approximately 272 in 100,000. The risk of fatal injury in the course of one year's work on a Louisiana oil rig is between 188 and 283 per 100,000.

Acquired Immunodeficiency Syndrome↗
PubMed1996

The routine wearing of gloves: impact on the frequency of needlestick and percutaneous injury and on surface contamination in the operating room.

The impact of wearing gloves on surface contamination and on the incidence of percutaneous injury were prospectively compared for two 4-mo periods in a single anesthesia department. Period I was immediately prior to the institution of mandatory glove wearing, and Period II followed a 1-mo adjustment period of mandatory glove use. Recording of all needlestick and other percutaneous injuries was performed on an ongoing basis, and incident reporting was actively and regularly solicited. During the final week of each period, 12 specific sites at each of nine anesthetizing locations were tested for occult blood. The incidence of needlestick injury was 0.28% for Period I versus 0.10% for Period II (P = 0.10) and the incidence for all percutaneous injuries was 0.60% for Period I and 0.27% for Period II (P = 0.06). If the one needlestick that occurred during noncompliance with gloving during Period II is eliminated, then there was a significant reduction in both needlestick and overall percutaneous injury (P < 0.05). Of 109 operating room sites, 42.2% were contaminated after Period I versus 31.2% after Period II (P = 0.07). The implementation of a mandatory glove use policy was associated with nonsignificant trends toward reduction in the incidence of needlestick and other percutaneous injury and in the level of surface contamination in the anesthesia workplace. Compliance with glove use resulted in a significant reduction in needlestick injury and overall percutaneous injuries.

Accidents, Occupational↗
PubMed1993

Impact of a needleless intravenous system in a university hospital.

Needlestick injuries are a serious, but preventable problem in the healthcare industry. Industry has developed better devices to protect the healthcare worker. This study evaluates the impact of a "needleless" intravenous system on needlestick exposures and whether the increased cost of this new system could be justified. Exposures were defined and injury reports analyzed retrospectively and following introduction of the needleless IV system. This study indicates that the introduction of a needleless IV system can significantly reduce the number of IV-related injuries that occur in an institution, and is economically feasible. Other categories of exposure (needle-related, related to other sharps, and trash-related) also showed a drop, whereas exposure from the disposal of sharp devices into needle boxes showed a significant increase. This seems to support other findings that in-room needle-box containers have not thus far reduced the number of injuries related to sharps disposal.

Costs and Cost Analysis↗
PubMed2006

Epidemiology of needlestick and sharps injuries among nurses in a Japanese teaching hospital.

The epidemiology of needlestick and sharps injuries (NSIs) was investigated among a complete cross-section of 1,162 nurses from a large hospital in southern Japan (response rate 74.0%). Forty-six percent had experienced an NSI in the previous year. Most were caused by ampoules or vials, which injured 32.3% of all nurses and accounted for 42.9% of all NSI events. Twenty-two percent of all NSIs involved a device that had been used on a patient prior to the NSI (contaminated device), while the usage status of a further 2.8% of devices was unknown. Logistic regression indicated that nurses younger than 25 years of age were 2.18 times more likely to have sustained a single NSI in the past 12 months [odds ratio (OR) 2.18, 95% confidence intervals (CI) 1.15-4.17] and 2.39 times more likely to have sustained multiple NSIs (OR 2.39, 95% CI 1.08-5.34). Working mixed shifts (rotating day and night, as opposed to day shifts alone) was associated with a 1.67-fold increased risk of sustaining any NSI (OR 1.67, 95% CI 1.01-2.85) and a 2.72 times greater risk of sustaining an NSI from a contaminated device (OR 2.72, 95% CI 1.71-4.44). Nurses who reported significant fatigue after work were 1.87 times more likely to sustain multiple NSIs (OR 1.87, 95% CI 1.13-3.13) and 1.94 times more likely not to report their NSIs (OR 1.94, 95% CI 1.03-3.71). Perceived high mental pressure was associated with a 1.75-fold increased risk of sustaining an NSI from a contaminated device (OR 1.75, 95% CI 1.07-2.88). Nurses who reported suboptimal staffing levels in their wards were 2.21 times more likely not to report any NSIs they sustained in the previous year (OR 2.21, 95% CI 1.06-4.89). Overall, this study suggests that NSIs represent a complex and multi-faceted problem for Japanese nurses. Intervention strategies should consider the emerging complicity of psychosocial factors on NSI among hospital staff in Japan, as elsewhere.

Adult↗
PubMed2005

Needlestick and Sharps Injuries among Australian medical students.

We investigated the prevalence and distribution of Needlestick and Sharps Injuries (NSI) among a group of Australian medical undergraduates from 4 consecutive grades. Data was obtained by means of an anonymous, self-reporting survey. A total of 254 questionnaires were obtained (response rate 97.3%). Among them, 35 students (13.8%) had suffered a total of 41 NSI incidents. By gender, 71.4% of the NSI reporters were female and 28.6% were male. NSI prevalence varied significantly with respect to students' year of study (P for Trend=0.0106), ranging from 7.3% in the 1st year to 26.8% in the 3rd year. Of the 41 NSI incidents, 29.2% were caused by a glass item, 24.4% by a hollow bore needle, 24.4% by another device and 22.0% by a surgical device. The distribution by causative device also varied from year to year. Overall, this study has shown that NSI represent an important hazard for Australian medical students. As such, the importance of intervention strategies to reduce NSI exposures must remain an essential facet of medical education, worldwide. Future preventive measures will also need to consider the unique situation of medical students in Australia, as elsewhere.

Australia↗
PubMed2004

Needlestick and sharps injuries: avoiding the risk in clinical practice.

What is the true incidence of needlestick and sharps injuries among health-care professionals in the UK and what is the real cost of such injuries? This article identifies the obvious and not-so-obvious risks to staff in community and hospital settings and examines how such risks can be minimised, drawing on guidance from NICE and the RCN.

Guidelines as Topic↗