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ORIGINAL CONTRIBUTIONS
Year : 2006  |  Volume : 60  |  Issue : 6  |  Page : 227-232
 

The prevalence of needle stick injuries in medical, dental, nursing and midwifery students at the university teaching hospitals of Shiraz, Iran


Department of Community Medicine, Shiraz University of Medical Sciences, Shiraz, Iran

Correspondence Address:
Mehrdad Askarian
Department of Community Medicine, Shiraz University of Medical Sciences, P. O. Box No. 71345-1737, Shiraz
Iran
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DOI: 10.4103/0019-5359.25904

PMID: 16790948

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  Abstract 

BACKGROUND: Medical, dental, nursing and midwifery students are at high risk for occupational exposure to blood-borne pathogens (BBPs) via sharp injuries such as needle stick injuries (NSIs). AIMS: The aim of this study was to determine the frequency of NSIs and the knowledge, attitude and practices of these students regarding their prevention. SETTINGS AND DESIGN: The clinical students at Shiraz University of Medical Sciences, Iran, were eligible to participate in a survey conducted by a self-administered questionnaire in 2004, asking them about NSIs during their clinical training undergraduate years. MATERIALS AND METHODS: A cross-sectional study evaluated NSIs and practices regarding protective strategies against BBPs in medical, dental, nursing and midwifery students at Shiraz University, Iran, in 2004. These students completed a self-administered questionnaire. STATISTICAL ANALYSIS: The data were entered into a personal computer using Epi-Info (version 2000). Chi-square and Fisher's exact tests for categorical variables and student t-test for continuous variables were performed, where appropriate, using SPSS version10. Alpha was set at the 5% level. RESULTS: The questionnaire was completed by 688 (53%) students. 71.1% (489/688) of the students had NSIs that most commonly (43.6%) occurred in patient rooms. 82% (401/489) of NSIs were not reported. 87.8% (604/688) of the students received information about standard isolation precautions and 86.2% of them had been vaccinated against hepatitis B. CONCLUSION: NSIs and non-reporting of NSIs were highly prevalent in these students. Education about the transmission of blood-borne infections, standard precautions and increasing availability of protection strategies must be provided.


Keywords: Blood-borne pathogen, dental student, medical student, midwifery student, needle stick injury, nursing student.


How to cite this article:
Askarian M, Malekmakan L. The prevalence of needle stick injuries in medical, dental, nursing and midwifery students at the university teaching hospitals of Shiraz, Iran. Indian J Med Sci 2006;60:227-32

How to cite this URL:
Askarian M, Malekmakan L. The prevalence of needle stick injuries in medical, dental, nursing and midwifery students at the university teaching hospitals of Shiraz, Iran. Indian J Med Sci [serial online] 2006 [cited 2015 Jan 26];60:227-32. Available from: http://www.indianjmedsci.org/text.asp?2006/60/6/227/25904


One of the serious problems of medical and paramedical students is the risk of occupational exposure, via sharp injuries, to blood-borne pathogens (BBPs) such as Hepatitis B (HBV), Hepatitis C (HCV) and human immunodeficiency virus (HIV).[1],[2],[3],[4],[5],[6] Thirty percent of needle stick injuries (NSIs) are not reported in the United States.[7] The risk of pathogen transmission from infected persons to nonimmune persons through an injury with a sharp object has been estimated to be between 6 and 30% for HBV, between 5 and 10% for HCV and 0.3% for HIV.[7],[8] Effectiveness of administration of post-exposure prophylaxis varies from 75 to more than 90% to prevent HBV infection. Post-exposure prophylaxis for HIV has also been shown to lower the risk of infection after sharp injuries. However, there is no known way of preventing HCV acquisition following NSI.[7],[9]

The purpose of this study was to calculate the frequency and the circumstance of NSI among a group of health care students as well as their knowledge, attitude and practices regarding the use of protective strategies against exposure to blood-borne pathogens (standard isolation precautions, double gloving and post-exposure prophylaxis).[10]


  Materials and Methods Top


All 1,299 medical, dental, nursing and midwifery students during clinical training at Shiraz University of Medical Sciences were eligible to participate in a survey conducted by an anonymous self-administered questionnaire in 2004 that asked them about NSIs during their clinical training undergraduate years after having oral informed consents. The proposal, including ethical views, was approved by the University's Vice Chancellor of Research. The survey tool was a questionnaire that was pre-tested on a random sample of 55 participants to ensure practicability, validity and interpretation of responses. The reliability of the questionnaire was assessed using Cronbach's alpha (0.812).

Statistical analysis

The data were entered into a personal computer using Epi-Info (version 2000) and analysis of frequency and tested for significance. Chi-square or Fisher's exact test for categorical variables and student t-test for continuous variables were performed using SPSS version 10 when appropriate. Alpha was set at the 5% level.


  Results Top


The survey was completed by 688 (53%) students of whom, 343 (57.2%) were medical, 208 (47.8%) were nursing and midwifery and 137 (51.9%) were dental students, consisting of 386 female and 302 male students. Since entering their clinical year, 71.1% (489/688) experienced a total of 1,336 NSIs, giving a ratio of 1:1.9 NSIs sustained by students in their undergraduate clinical school over, on an average, a-12 month period (maximum 17 months). For the students who reported that they had sustained an NSI, 27.8% (136/489) had one, 18.8% (92/489) two, 13.5% (66/489) three and 39.9% (195/489) more than three NSIs. The majority ( P <0.043, df=3,485, CI=4.308-2.708) of all NSIs were sustained in patients' rooms and occurred most frequently during venous sampling or intravenous (IV) injections [Table - 1][Table - 2].

For the last injury recalled, 74.6% (365/489) involved students injuring themselves. Overall, 82% (401/489) of all NSIs went unreported, most of which were because the injured student did not know about the reporting mechanism [Table - 3].

The reasons given by students who did not routinely wear double gloves were inadequate facilities and decreased ability to manipulate tissues [Table - 4]. Few (35.6%-245/688) students reported that they always used sharp containers to dispose needles and 11.6% (80/688) practiced recapping rarely or never. Eye protection in the operating and emergency rooms was not used routinely by the majority (97.5%) of medical and nursing students. 52.5% of the dental students used eye protection routinely. HBV vaccination coverage was 86.2% (594/688). Of all NSIs, 2.5% (34/1336) of needles had been used on patients with HBV infection, 1.6% (22/1336) with HCV infection and 0.4% (6/1336) with HIV/AIDS.

Most students (58.1%, 400/688) were either extremely or very concerned about the possibility of contracting HBV infection. The students rated patient risk factors on a five-point scale, ranging from extreme to no concern. Most had extreme concern for the acquisition of AIDS (94.5%-651/688), HBeAg positive HBV infection (94.5%-651/688) and injecting drug users (88.5%-609/688).


  Discussion Top


This is the first survey of needle stick injuries (NSIs) in Shiraz, Iran. NSIs are one of the hidden problems in health care workers.[2],[3],[4] In our study, 71.1% (489/688) of the students reported at least one NSI, most of which occurred in patient rooms during venous sampling or intravenous injections. Many (30%) of the medical students in Washington had sustained at least one NSI and these most commonly (72.1%) occurred in the operating room.[2] Most students (61.9%) in Taiwan had an NSI and the majority (70.1%) of these NSIs occurred in patient rooms.[3] In Iran 31.7% of 203 anesthesiology personnel had at least one NSI.[8] In other studies, it has been shown that lack of experience in many procedures, insufficient training, work overload and fatigue leads to occupational sharp injuries.[10],[11],[12] In this study, 82% (401/489) of the students did not report these NSIs. The most common reason for under-reporting was the personnel's lack of knowledge that all injuries had to be reported [Table - 3]. Other reasons are based on a background of insufficient knowledge or poor practices. The observed high level of under-reporting suggests that students need education on prevention, especially focusing on the importance of reporting all NSIs and the possibilities of prophylaxis after exposure to BBP.[3],[4],[5],[6],[7],[8],[9],[10],[11],[12],[13]

Our study showed that 87.8% (604/688) of the students reported receiving information about Universal Precautions (UP) and BBP exposure. This is lower than the figure arrived at in the study by Patterson et al which evaluated NSIs among medical students and found that 98% of them reported receiving information about these topics.[2] These data show that the students need to be provided structured education in UP for the improvement of occupational safety.[14],[15],[16],[17] In our study, only 86.2% (594/688) of the students reported having received three doses of vaccine and most students (96.2%) reported gloving during wound suturing. Meaner et al reported that 50% of medical students in Strasbourg did not use gloves.[18] In our study, 11.6% (80/688) of the students practiced recapping 'rarely to never' and 35.6% (245/688) of them always discarded needles in a sharp container. 58.1% of the students in this survey were extremely or very concerned about BBPs. That is similar to the study of Bilsk et al that reported that the most common cause of injuries from needles in nurses was improper handling of syringes and needles after injections (removing a needle from a syringe or placing the needle in a full container for medical waste).[19] 87% of the medical students in Washington were moderately to extremely concerned about BBP.[2] Our study revealed that the majority of students were either extremely concerned or very concerned about the possibility of contracting HBV infection (58.1%-400/688). 30.9% (213/688) of students also stated that their concerns had influenced their decision on choosing a specialty residency. Also, this concern and attitude about BBP transmission can influence their practice. However, it can be speculated that extended knowledge on this issue and professional counseling after exposure might lead to a changing attitude. Recently, a study conducted at an Australian hospital demonstrated that NSI events represent an important workplace issue for nurses.[20]

The results of this study show that the way of educating about NSIs has to be changed so that health care workers realize the importance of occupational exposure UP and other protection strategies for blood-borne infections. We need further evaluation of the effectiveness of improved education in the workplace. We recommend a surveillance system and a center for managing injured persons in each and every ward of hospitals to be set up as well as following up injured health care workers as part of a local research or ongoing audit project. Success of educational and other interventions as well as risks for different specialties or professional groups also need to be assessed in this way.

In conclusion, these students are at high risk for NSIs and BBPs exposure and we recommend that they need a targeted education about protection strategies for blood-borne infection.


  Acknowledgement Top


This study was funded by the Deputy for Research at the Shiraz University of Medical Sciences (grant no. 82-1961).

 
  References Top

1.Smith AJ, Cameron SO, Bagg J, Kennedy D. Management of needlestick injuries in general dental practice. Br Dent J 2001;190:645-50.  Back to cited text no. 1  [PUBMED]  [FULLTEXT]
2.Patterson JM, Novak CB, Mackinnon SE, Ellis RA. Needlestick injuries among medical students. Am J Infect Control 2003;31:226-30.  Back to cited text no. 2  [PUBMED]  [FULLTEXT]
3.Shiao JS, Mclaws ML, Huang KY, Guo YL. Student nurses in Taiwan at high risk for needlestick injuries. Ann Epidemiol 2002;12:197-201.   Back to cited text no. 3  [PUBMED]  [FULLTEXT]
4.Kohn WG, Collins AS, Cleveland JL, Harte JA, Eklund KJ, Malvitz DM, et al . Guidelines for infection control in dental health-care settings-2003. MMWR Recomm Rep 2003;52:1-61.  Back to cited text no. 4    
5.Thomas DL, Gruninger SE, Siew C, Joy ED, Quinn TC. Occupational risk of hepatitis C infections among general dentists and oral surgeons in North America. Am J Med 1996;100:41-5.  Back to cited text no. 5  [PUBMED]  
6.Hutin YJ, Hauri AM, Armstrong GL. Use of injections in healthcare settings worldwide, 2000: Literature review and regional estimates. BMJ 2003;327:1075.  Back to cited text no. 6  [PUBMED]  [FULLTEXT]
7.Centers for Disease Control and Prevention: [homepage on the Internet], Selection, evaluation and using sharps disposal containers 1998. 2004 Jun [cited 2004 July 18]; Available from: http://www.cdc.gov/niosh/homepage.html.  Back to cited text no. 7    
8.Askarian M, Ghavanini AA. Survey on adoption of measures to prevent nosocomial infection by anaesthesia personnel. East Mediterr Health J 2002;8:416-21.  Back to cited text no. 8  [PUBMED]  
9.Grady GF, Lee VA, Prince AM, Gitnick GL, Fawaz KA, Vyas GN, et al . Hepatitis B immune globulin for accidental exposures among medical personnel: Final report of a multicenter controlled trial. J Infect Dis 1978;138:625-38.  Back to cited text no. 9    
10.Phipps W, Honghong W, Min Y, Burgess J, Pellico L, Watkins CW, et al . Risk of medical sharps injuries among Chinese nurses. Am J Infect Control 2002;30:277-82.  Back to cited text no. 10    
11.Rogers B, Goodno L. Evaluation of interventions to prevent needlestick injuries in health care occupations. Am J Prev Med 2000;18:90-8.   Back to cited text no. 11  [PUBMED]  [FULLTEXT]
12.Goldmann DA. Blood-borne pathogens and nosocomial infections. J Aller Clin Immunol 2002;110:S21-6.   Back to cited text no. 12  [PUBMED]  [FULLTEXT]
13.Knight VM, Bodsworth NJ. Perceptions and practice of universal blood and body fluid precautions by registered nurses at a major Sydney teaching hospital. J Adv Nurs 1998;27:746-51.  Back to cited text no. 13  [PUBMED]  [FULLTEXT]
14.Tarantola A, Golliot F, Astagneau P, Fleury L, Brucker G, Bouvet E, et al . Occupational blood and body fluids exposures in health care workers: Four-year surveillance from the Northern France network. Am J Infect Control 2003;31:357-63.  Back to cited text no. 14    
15.Whitby RM, Mclaws ML. Hollow-bore needlestick injuries in tertiary teaching hospital: epidemiology, education and engineering. Med J Aust 2002;177:418-22.  Back to cited text no. 15  [PUBMED]  [FULLTEXT]
16.Nobile CG, Montuori P, Diaco E, Villari P. Healthcare personnel and hand decontamination in intensive care units: Knowledge, attitudes and behaviour in Italy. J Hosp Infect 2002;51:226-32.  Back to cited text no. 16  [PUBMED]  [FULLTEXT]
17.Thunberg Sjostrom H, Skyman E, Hellstrom L, Kula M, Grinevika V. Cross infection prevention, basic hygiene practices and education within nursing and health care in Latvia. Nurse Educ Today 2003;23:404-11.  Back to cited text no. 17  [PUBMED]  [FULLTEXT]
18.Meunier O, Almeida N, Hernandez C, Bientz M. Blood exposure accidents among medical students. Med Mal Infect. 2004 Jun [cited 2004 July 18]; 2001;31:537-43. Available from: http://www.sciencedirect.com.  Back to cited text no. 18    
19.Bilski B. Needlestick injuries in nurses- the Poznan study. Int J Occup Med Environ Heaith 2005;18:251-4.  Back to cited text no. 19  [PUBMED]  
20.Smith DR, Smyth W, Leggat PA, Wang RS. Needlestick and sharps injuries among nurses in a tropical Australian hospital. Int J Nurs Pract 2006;12:71-7.  Back to cited text no. 20  [PUBMED]  [FULLTEXT]


    Tables

[Table - 1], [Table - 2], [Table - 3], [Table - 4]

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