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The willingness of final year medical and dental students to perform bystander cardiopulmonary resuscitation in an Asian community

Abstract

Background

Despite the importance of early effective chest compressions to improve the chance of survival of an out-of-hospital cardiac arrest victim, it is still largely unknown how willing our Malaysian population is to perform bystander cardiopulmonary resuscitation (CPR).

Aims

We conducted a voluntary, anonymous self-administered questionnaire survey of a group of 164 final year medical students and 60 final year dental students to unravel their attitudes towards performing bystander CPR.

Methods

Using a 4-point Likert scale of “definitely yes,” “probably yes,” “probably no,” and “definitely no,” the students were asked to rate their willingness to perform bystander CPR under three categories: chest compressions with mouth-to-mouth ventilation (CC + MMV), chest compressions with mask-to-mouth ventilation (CC + PMV), and chest compressions only (CC). Under each category, the students were given ten hypothetical victim scenarios. Categorical data analysis was done using the McNemar test, chi-square test, and Fisher exact test where appropriate. For selected analysis, “definitely yes” and “probably yes” were recoded as a “positive response.”

Results

Generally, we found that only 51.4% of the medical and 45.5% of the dental students are willing to perform bystander CPR. When analyzed under different hypothetical scenarios, we found that, except for the scenario where the victim is their own family member, all other scenarios showed a dismally low rate of positive responses in the category of CC + MMV, but their willingness was significantly improved under the CC + PMV and CC categories.

Conclusion

This study shows that there are unique sociocultural factors that contribute to the reluctance of our students to perform CC + MMV.

Introduction

The ultimate aim of any basic life support (BLS) training course is not just to equip the health care providers [13] and lay rescuers [35] with the knowledge and skills to perform cardiopulmonary resuscitation (CPR), but also to cultivate a strong conviction among them to be willing to help should such an actual dire need arise [5, 6]. Time is of utmost importance in improving the chance of survival of a cardiac arrest victim [7, 8] as every minute delay without the initiation of BLS will decrease the chance of survival by 7–10% [9].

This is especially so if the time taken from the activation of the emergency medical services to the time when they arrive at the scene is longer than the critical first 5 min [10]. In Malaysia, this time interval is often 15–20 min at best [1113].

Furthermore, as over 75% of all out-of-hospital cardiac arrests occur at home [14], there is a need to disseminate the knowledge and skills of BLS to a wider sphere of the Malaysian population, encompassing not just the uniformed members of society like the police and the fire squads, but also the ordinary citizens at home as well.

Although BLS courses have been organized by various professional bodies in Malaysia [13, 15], it is still largely unknown how prepared our Malaysian population is to translate what has been learned from the BLS training courses into the pragmatic willingness to perform CPR should such a potential life-saving measure be called for.

As far as we know, the only published Malaysian survey on this issue was one done in 2005, where it was found that only 52.7% of the health care staffs interviewed (comprising various categories including health directors, doctors, ward nurses, and community assistant nurses) said that they were confident and able to perform first aid and CPR [16].

We, therefore, conducted an opportunistic, voluntary, anonymous self-administered questionnaire survey to unravel the attitudes of our final year medical and dental students towards performing bystander CPR in a setting beyond the scope of their future professional call of duty. This survey was conducted in conjunction with the end of rotation emergency medicine examination.

Methods

Briefly, Malaysia (2.30°N, 112.30°E) is a multi-ethnic, multi-religion country consisting of 13 states and 3 federal territories in Southeast Asia [17, 18]. The majority of the Malaysian population of about 25 million people consists of the Malays (50.4%); the other major ethnic groups include the Chinese (23.7%), the indigenous groups (11%), and the Indians (7.1%) [17]. For the year 2006, the Malaysian crude death rate per 1,000 people was 4.5 [19]. The top three principal causes of death in our Ministry of Health hospitals were septicemia (16.9%), heart diseases and diseases of pulmonary circulation (15.7%), and malignant neoplasm (10.6%) [19]. The doctor:population ratio in that year was 1:1,214 [19]. With such a doctor:population ratio coupled with a high death rate due to cardiopulmonary diseases, it points out all the more that the public should play an active role to improve the chance of survival of those who suffer a cardiac arrest in the out-of-hospital setting.

The undergraduate medical degree in the Universiti Sains Malaysia is an integrated, three-phase program based on the SPICES model (S = student-oriented, P = problem-based, I = integrated, C = community-based, E = elective, and S = self-directed/systematic learning) [20, 21]. Under this system, the students go through the various biomedical disciplines in a spiral approach, where core subjects dealt with in the earlier phase are pursued again in a more in-depth manner during the subsequent phases to ensure adequate breadth and depth of the various medical knowledge [20]. In the area of resuscitation, for example, in the first year of their medical education, the students are taught the basic principles and skills of first aid, including BLS, and in the final year, the knowledge and skills of BLS will be revisited together with the principles and practices of advanced cardiac life support (ACLS). In short, all medical students in the university will go through the principles and practices of BLS at least twice in their undergraduate years. The undergraduate dental degree is modeled on this system using a similar concept as for the medical degree.

The emergency medicine posting is a compulsory 2-week rotation in the undergraduate medical and dental curriculum. It is during this rotation that batches of 20–25 medical and dental students are exposed to the various principles and practices of emergency medicine including BLS and ACLS in accordance with the 2005 American Heart Association (AHA) guidelines for CPR and emergency cardiovascular care [22]. At the end of the rotation, the students sit a written test and a structured clinical examination. For the academic year 2007–2008, there were a total of 164 final year medical students and 60 final year dental students.

Each student was given a set of questionnaire survey forms that consisted of three sections. Section A of the survey consisted of demographic entries, whereas in section B, the students were asked a general question on what they would do should they witness any cardiac arrest in an out-of-hospital setting. Section C was subdivided into three categories, i.e., performing chest compressions with mouth-to-mouth ventilation (CC + MMV), performing chest compressions with mask-to-mouth ventilation (CC + PMV), and performing chest compressions only (CC). For each category, the students were asked to rate their willingness to perform bystander CPR under ten hypothetical scenarios using a 4-point Likert scale of “definitely yes,” “probably yes,” “probably no,” and “definitely no.” The ten hypothetical scenarios included situations such as when the victim is the respondent’s own family member, the victim is involved in a motor vehicle accident with facial trauma, and the victim is an unkempt individual who appeared like a drug addict (see Table 1 for a complete list of scenarios).

Table 1 Questions asked in the survey form

Realizing the potential vulnerability of the students as study subjects, we emphasized to them that this was an anonymous, voluntary survey. Students who refused to participate simply returned the form in an opaque envelope provided. We allowed them to fill out the form in an unmonitored environment because we did not want them to feel that they were doing it under duress or scrutiny. We also made clear in briefings that should they agree to participate in the survey, they were implying that they consented to allow their anonymous answers to be pooled for statistical analysis and any subsequent publications.

We chose to obtain the opinions of the final year medical and dental students because we believe, as the immediate future batch of new doctors and dentists, they should set an example for the public. Our argument is that, if our future health care providers are not willing to perform bystander CPR in the out-of-hospital setting, how much more then can we expect from our general public?

For selected analysis, “definitely yes” and “probably yes” variables were recoded as “positive responses,” whereas “probably no” and “definitely no” were recoded as “negative responses.” The McNemar test was applied for analysis of dependent categorical variables, whereas the chi-square test or Fisher exact test was applied for analysis of independent categorical variables. All statistical analysis was computed using Statistical Package for the Social Sciences (SPSS®) Version 12.0.1.

Results

Of the 160 medical students, 148 responded (92.5%), and 56 of the 60 dental students responded (93.3%). The majority of the students are Malays, and there were more female respondents than male. These facts merely reflect the demographic makeup of our university intake. When asked the general question “What would you do if you witness a cardiac arrest in an out-of-hospital setting?” only 51.4% of the medical students and 45.5% of the dental students said that they would tell the crowd that they are health care students and offer to perform CPR, whereas 48.6% of the medical students and 50.9% of the dental students said that they would just offer to call the emergency medical services but be afraid to offer to perform CPR. Two (3.6%) of the dental students said that they would just silently walk away from the scene (Table 2).

Table 2 Demographic data of the respondents

In the CC + MMV category, we found that, except for the scenarios where the victim is a family member or a close friend, all other scenarios show a similar trend where the number of “definitely yes” and “probably yes” answers are dismally low (Table 3).

Table 3 The various responses to the ten hypothetical scenarios

However, comparing CC + PMV versus CC + MMV, we found that the number of positive responses (recoded from “definitely yes” and “probably yes”) are significantly higher in all scenarios in the CC + PMV category. A comparison between CC and CC + MMV categories also shows a similar trend. The only scenario where there is no statistically significant result shown in these analyses is the scenario where the victim is the respondent’s own family member as the number of positive responses is equally high for all three categories. (Tables 4 and 5).

Table 4 Comparison of number of positive responsesa between CC + MMV and CC + PMVb
Table 5 Comparison of number of positive responsesa between CC + PMV and CCb

Not only that, comparing CC + PMV versus CC categories, we found that the number of positive responses is also significantly higher in the CC category in these four scenarios: victim who is of different gender and race (94.6 versus 87.2%, P = 0.004), victim who is involved in a motor vehicle accident with facial trauma (89.2 versus 69.5%, P < 0.001), victim who is an unkempt stranger who looks like a drug addict (79.8 versus 50.7%, P < 0.001), and victim who has a personal dispute with the respondent (92.1 versus 82.3%, P < 0.001) (Table 6).

Table 6 Comparison of number of positive responsesa between CC + PMV and CCb

Interestingly, we also found that when the respondent’s gender is female, the number of positive responses is also significantly lower in the scenario of a victim who is of different gender as compared to a male respondent responding to a female victim. This happened in both CC + MMV (34.4 in female respondents versus 75.0% in male respondents, P < 0.001) and the CC + PMV (90.7 versus 100% in male respondents, P = 0.023) categories. This significance was not observed in the CC technique (Table 7).

Table 7 A comparison of positive response rates among male and female respondents in responding to victim of a different gender

Discussion

Prompt response in giving effective chest compressions and early defibrillation is of utmost importance in optimizing the chance of survival of a cardiac arrest victim [7]. However, from our survey, only about half of our students said that they would be willing to perform CPR when they witnessed a cardiac arrest in front of them. Our argument is, if our students are not willing to give CPR despite that they had just completed the BLS and ACLS training, how much then can we expect them to be willing to perform CPR in months or years ahead after the completion of the BLS and ACLS? Studies had shown that the retention of knowledge and skills of CPR declines over time [2325]. Furthermore, the students had been exposed to the practices and skills of BLS at least twice in the medical school. This is a disturbing trend to us as these students represent the immediate future doctors and dentists in our country. And often, these new doctors are the first ones to be called to attend to a cardiac arrest [12, 26, 27]. Many of these newly graduated doctors had not been shown to be competent enough to perform adequate resuscitation [2730].

Except for victims who are their own family members or close friends, most students in our survey gave a negative response to performing CC + MMV. This has been demonstrated in similar previous surveys [15]. However, what had often not been studied in other surveys, but which we found to be additional deterrents in our community to performing CC + MMV, are sociocultural and gender differences. As mentioned, Malaysia is rich in her diverse and unique cultural heritage that is mutually respected due to her multi-ethnic population makeup. But these may ironically form some sociocultural reservations resulting in the reluctance among our students to perform CC + MMV on a victim of different gender and/or race. This is especially the case regarding the gender factor, particularly for a female student responding to a male victim (Table 7).

Although it is true that using a pocket mask for ventilation also helps to significantly improve the willingness of our students to give CPR, pocket masks are not easily available to the general public in Malaysia. The most feasible and practical way is, of course, performing chest compression-only CPR. In fact, realizing the importance of prompt action and minimizing the delay in initiating chest compressions, the AHA recently issued a scientific statement in April 2008 calling for a bystander rescuer (regardless of whether trained or untrained) to immediately initiate chest compressions by pushing hard and fast in the center of the chest of an adult victim who suffered sudden cardiac arrest in an out-of-hospital setting [31]. Delays and interruptions should be minimized, and a rescuer should provide immediate chest compressions only unless he or she is confident and willing to give mouth-to-mouth ventilation without jeopardizing effective compressions. Chest compressions only have been demonstrated to be as effective as chest compressions plus ventilation [3236] in the case of a sudden cardiac arrest of an adult in the out-of-hospital setting.

Various reasons have been elucidated on why bystanders refused to provide CPR, and these include a fear of disease transmission through MMV [31, 3740] as well as panic and fear of causing further harm [31, 40]. Nevertheless, ultimately the decision whether the respondent would respond depends on whether the bystander perceives the event as an emergency situation that demands a moral responsibility to act upon it [41]. A bystander who believes that there are more capable people around will less likely offer his or her help—and this is often termed bystander apathy [42, 43]. A bystander who lacks self-confidence in his or her ability will also be less likely to offer aid [3, 5]. It has also been shown that a bystander who perceives serious consequences of not helping and a low risk of helping a particular victim will be more likely to help [2]. This explains why most bystanders are willing to help their own family members but not someone who appears like a drug addict with a high risk of human immunodeficiency virus (HIV) infection. These factors are possibly some of the most likely factors that contribute to the unwillingness among our students to perform bystander CPR. However, these remain yet to be validated in this study but they should serve as impetus for future works to be explored.

Several other limitations in this study are inevitable, as many of these are limitations inherent in the design of the study itself. Responses in hypothetical situations may not necessarily mirror actual clinical behavior. As mentioned earlier, several other factors (like the emotional makeup at that spur of the dire moment and the perceived self-confidence) may as well influence a bystander’s choice on whether to respond or not. Nevertheless, although intention or willingness to perform may not be the ideal indicators of future behavior, they are still good, practical survey tools that have been used in many other studies of health behaviors like dietary habits, HIV risk behaviors, etc. [4, 43, 44].

Secondly, we admit that the ten hypothetical scenarios in the survey are too artificial and mechanically dissected. In actual situations, complexity is the rule and very often there would be overlaps of the scenarios. For example, although we gave the students two different scenarios–victim who is a family member and victim who is involved in a motor vehicle accident with facial trauma/bleeding—in actual fact, how would one respond to performing CPR + MMV for a family member who sustained facial trauma/bleeding?

Lastly, the fact that we allowed the students to complete the survey form in an unmonitored environment may actually have encouraged them to discuss with one another rather than revealing their own true intentions.

Conclusion

In conclusion, although there are a number of limitations in this survey, the results do shed light on some new knowledge. Most of the similar surveys that had been done earlier were done outside of the Asian population [1, 2, 4, 5, 3739], with the exception of one done on a Japanese population [3]. The results of these studies cannot be overgeneralized and molded to our Asian community. There are certain peculiar and unique sociocultural factors that contribute to the unwillingness of our community to perform bystander CPR. As stated at the beginning of this paper, the ultimate aim of any BLS training is to translate the skill and knowledge into a practical willingness to perform bystander CPR in order to make the society a safer place to live in. Therefore, the CPR technique should be easy to learn, retain, and perform, especially for the general public. As such, the fact that the chest compressions-only technique has gained more importance with the announcement of the AHA scientific statement in April 2008 [31] is certainly good news for our Asian community responding to an adult stranger who collapses suddenly outside of the hospital.

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Correspondence to Keng Sheng Chew.

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Chew, K.S., Yazid, M.N.A. The willingness of final year medical and dental students to perform bystander cardiopulmonary resuscitation in an Asian community. Int J Emerg Med 1, 301–309 (2008). https://doi.org/10.1007/s12245-008-0070-y

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Keywords

  • Cardiopulmonary resuscitation
  • Mouth-to-mouth resuscitation
  • Basic cardiac life support
  • Asian community