Survey of the knowledge, attitude and practice of Nigerian surgery trainees to HIV-infected persons and AIDS patients

Background The incidence of HIV infection and AIDS is rising in Nigeria. Surgeons are at risk of occupationally acquired infection as a result of intimate contact with the blood and body fluids of patients. This study set out to determine the knowledge, attitude and risk perception of Nigerian surgery residents to HIV infection and AIDS. Methods A self-administered postal questionnaire was sent to all surgery trainees in Nigeria in 1997. Results Parenteral exposure to patients' blood was reported as occurring 92.5% times, and most respondents assessed their risk of becoming infected with HIV as being moderate at 1–5%. The majority of the respondents were not aware of the CDC guidelines on universal precautions against blood-borne pathogens. Most support a policy of routinely testing all surgical patients for HIV infection but 76.8% work in centers where there is no policy on parenteral exposure to patients' blood and body fluids. Most (85.6%) do not routinely use all the protective measures advocated for the reduction of transmission of blood borne pathogens during surgery, with the majority ascribing this to non-availability. Most want surgeons to be the primary formulators of policy on HIV and surgery while not completely excluding other stakeholders. Conclusions The study demonstrates the level of knowledge, attitude and practice of Nigerian surgery trainees in 1997 and the need for policy guidelines to manage all aspects of the healthcare worker (HCW), patients, and HIV/AIDS interaction.


Background
After initial reports in 1981, Sub-Saharan Africa now has the highest prevalence of Human Immunodeficiency Vi-rus (HIV) infection in the world with profound socio-economic impact. This has led to a heightened concern in the surgical community in terms of its impact on the practice of surgery and safety of practitioners. This concern arises from the significant risk of infection through the parenteral route, lack of curative treatment, and the high frequency of exposure of surgeons to the body fluids of patients.
While most cases of infection in Africa are through heterosexual sexual transmission, there is inadequate documentation of the incidence of occupational HIV infection among health care workers. It has been estimated that at least 1 in 1500 surgeons is likely to be infected by HIV in the next 35 years [1] and that a surgeon's cumulative lifetime risk of HIV seroconversion ranges from 1% to 10% [2]. This risk arises from the frequent and intimate exposure to patients' body fluids through glove punctures, needlestick injuries, or ocular splashes and it is related to the prevalence of HIV infection in the community.
In this communication, we report the knowledge, attitude, and practices (KAP) of Nigerian surgery trainees to HIV infected persons in 1997. Studies from other parts of the world have addressed these issues, but due to differences in seroprevalence, amongst other factors, the results of studies conducted in one environment cannot be extrapolated to others [3][4][5]. Previous studies in this environment have either focused on health workers generally or on categories of health workers other than surgeons [6][7][8].

Methods
A 50 item self-administered questionnaire, using a combination of closed-and open-ended questions, was developed after focus group discussions with a group of surgery residents attending a revision course at the University College Hospital (UCH), Ibadan, in August 1996. The questionnaire was pre-tested among surgery residents at the UCH and subsequently distributed to all the residents who were in training in the various institutions in Nigeria by a combination of postal and direct delivery during the months of September to December 1997. Consent was implied by the voluntary return of the questionnaire.
The questionnaire asked about demographic information, the prevalence of HIV infection in the respondent's area of practice, the prevalence among surgical patients and the respondent's likelihood of becoming infected after a single percutaneous injury with a needle. Respondents were asked about the frequency of percutaneous exposure to patients' blood that they have had in the year preceding the study. They were further asked to estimate their lifetime occupational risk of acquiring HIV infection, whether they have ever been exposed to the blood or body fluid of an HIV infected patient, and how often they have inadvertently operated on a patient with HIV or AIDS.
Respondents were also asked about the CDC guidelines for universal precautions against blood-borne pathogens [9], compliance with them, factors militating against compliance, and whether the current level of education prepared residents to adequately look after HIV positive patients. Respondents were also asked about their attitude to operations on HIV positive patients. Finally, respondents were requested to volunteer an opinion on several issues relating to policy on surgical treatment of patients with AIDS and HIV infection, patients' rights and AIDS, and who should be the primary formulators of policies on AIDS and surgical practice.

Results
There were about 300 residents in training in the accredited (by either the National Postgraduate Medical College of Nigeria or the West African College of Surgeons) surgical training programs in Nigeria at the time of the study; they were contacted through the Chief Residents of in the institutions. Only 112 responded to the survey giving a response rate of 37.3%. Of these, 99.1% were male, with only one female. The mean age of the respondents was 32.2 +/-3.57(SD) years, and 58.0% were married. The respondents have been in surgical practice for periods ranging from 1 to 15 years; mean of 6.4 +/-2.1(SD) years. Only 15.2% of the respondents attempted to estimate the HIV prevalence in their area of practice and figures quoted ranged from 1% to 80% with a mode of 1%.
Slightly less than half (44.6%) of the respondents offered an estimate of the HIV seroprevalence rate in their surgical admissions, 52.0% said 1.0%. Most (88.4%) reported needlestick injuries (NSI) with a mode of 1-2 exposures in the year preceding the study while 32.1% have had instrument injuries with a mode of 1-2 incidents/year. Exposure to HIV positive blood was believed to be frequent (80.4%); 42.9% and 6.3% respectively believe that they had occasionally and often operated on HIV positive patients unknowingly. On the other hand, 22.7% and 3.6% respectively had operated occasionally and often on AIDS patients unknowingly. Positive serological status for HIV was confirmed in only 70.9% of these instances.
Forty four percent (44.0%) of respondents had an idea of the CDC guidelines for universal precautions against blood borne pathogens, 42.2% know it well, while 13.8% have no idea about it. Table 1 shows the frequency of use of protective devices and the patient categories in which they were used. 85.6% did not use some of these materials because they were often not available while 6.7% forgot to use them. Other reasons for non-utilization were "feeling that they are not needed" 2.2%, "do not know about them" 1.1%, while 4.4% gave no reason. Some 68.5% considered their training to be inadequate preparation for the management of patients with HIV and 95.5% believed that there is need for a special educational program. Fifty eight percent (58.0%) and 78.2% would not perform elective surgery on HIV positive and AIDS patient respectively, while 14.4% and 31.7% would deny life saving surgery to patients with HIV and AIDS, respectively. Forty three percent (43.0%) would not perform surgery on HIV positive patients with a malignancy while 55.0% would not do it in AIDS cases. Rather fewer respondents, 5.5% and 26.9% considered that surgery in HIV positive or AIDS patients was too dangerous while 66.4% (HIV positive) and 59.3% (AIDS) considered that the risk was high and the surgeon should be concerned about this. Most (91.1%) of the respondents did not think that an HIV positive surgeon should be barred from practice, and 53.2% thought that he should be barred from performing invasive procedures. Table 2 shows the hurdles to HIV testing in the hospital of practice of the respondents. Absence of clear-cut hospital guidelines on the issue was the single most important reason why routine HIV testing was not done, followed by the absence of countrywide guidelines and the embarrassment that the procedure may have caused to both patient and doctor. Most of the respondents (73.2%) did not rou-  9% would agree to be tested if a patient requested it. Some 28.6% of the respondents had been tested for HIV, but only 4.5% have ever told their patients their HIV status. The reason for the disclosure to the patient was not stated. The commonest reason for HIV testing among the respondents was as a requirement before blood donation. The respondents ranked surgeons as the most important stakeholder in the formulation of policy about surgery and HIV infection, followed by government, and medical ethicists. Human rights groups, patients' rights group and hospital administrators were ranked lowest.

Discussion
The HIV sero-prevalence among antenatal clinic attendees in Nigeria has risen from 1.8% in 1991, to 3.8% in 1993, 4.5% in 1995 and 5.8% in the most recent survey in 2001 (Federal Ministry of Health of Nigeria). In this KAP study of Nigerian surgery trainees in 1997, the majority of the respondents showed a lack of awareness of the seroprevalence of HIV in their area of practice and poor perception of risk posed by exposure to patients with HIV. This lack of awareness has been reported in many other countries at the early stages of the HIV epidemic and among other categories of HCW in Nigeria [8,10] and previous studies of Nigerian HCW suggested that there is a positive association between risk perception and utilization of universal precautions [11].
The incidence of percutaneous exposure to patients' body fluids was similar to that reported from one of the training centers encompassed by this study two years earlier by Olubuyide and Olawuyi [12]. Non-availability of relevant devices remains the most important factor militating against the use of universal precautions. The percentage of our respondents reporting this was higher than that reported by others [12] probably because of the increased requirements of surgical compared to ward practice. Years of neglect and lack of new investment in the health sector coupled with poor policies have resulted in poorly staffed medical centers with inadequate, old and poorly functioning medical equipment [13]. Combined with the high HIV seroprevalence, the risk of occupationally acquired blood borne infections to HCW rises beyond the 0.3% to 0.4% risk of infection after a single percutaneous exposure that has been cited in studies done in Europe and America by 15 times or more [14].
Many of the respondents in this study would not operate on HIV positive patients. This aversion may be related to the perception of risk of infection, the non-availability of equipment to comply with universal precautions, inadequate training, the high seroprevalence of HIV, and their level of awareness. The attitude of HCW to patients with HIV has been shown to change with intervention that increased their skills and confidence in dealing with HIV positive patients [15]. Such interventions might also equip HCW with the skills to counsel and test patents as required.
The risk of transmission of HIV from an infected healthcare worker to a patient is 'vanishingly small' [16]. Given the dilemma between informed consent and discrimination, especially where the infection has been occupationally acquired, our respondents thought that while HIV positive surgeons should not be banned from surgery, they should be barred from performing invasive procedures. In other countries, the risk of infection from an infected HCW where universal guidelines have been followed has concluded that there is no significant risk of transmission; hence there is no need to limit the scope of practice of the HCW [17].
The attitude to patient testing, HCW testing, and the right of patients to the latter information were uniformly different among the respondents. This illustrates the need for policy discussions about the risk of HIV to the HCW, provision of a minimum set of equipment to meet the requirements for universal precautions, rigorous training and monitoring with sanction for non-use, and the identification, management and compensation of HCW with occupationally acquired HIV infection [7].
The respondents constituted 37% of all the surgery trainees in Nigeria at the time this study was conducted. It is possible that KAP to HIV infection affected the (non) response of the trainees who did not return the questionnaire. Since we do not have any information about nonresponders, the direction and influence of this bias cannot be predicted; this represents a limitation of the study.
Since previous studies of the KAP to HIV in our environment have been limited to a one institution or a few urban centers, we are unable to compare those response rates to our study [6][7][8]11,12,15,18]. Given the methodology, the study is also liable to recall bias, information bias, and reverse causation. Despite these limitations, however, we believe that the study reveals the KAP among surgery trainees in 1997 and can serve as a basis for comparing the change that has occurred since then given that the incidence and awareness of HIV infection is now higher.