| Literature DB >> 19384646 |
Keng Sheng Chew1, Mohd Noh Abu Yazid.
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.Entities:
Year: 2008 PMID: 19384646 PMCID: PMC2657260 DOI: 10.1007/s12245-008-0070-y
Source DB: PubMed Journal: Int J Emerg Med ISSN: 1865-1372
Questions asked in the survey form
| Section A |
| Demographic data: |
| Age |
| Gender: male/female |
| Dental/medical student? |
| Race |
| Section B |
| General question: |
| In general, what would you do if you witness someone having cardiopulmonary arrest? (Assume there is no scene danger and help has already been summoned) |
| A. Pretend you do not see it and walk away |
| B. Offer to call the emergency medical services, but be afraid to tell the crowd you are a health care student and/or afraid to offer CPR (while you silently hope that someone else would do the CPR or the ambulance would have arrived quickly) |
| C. Tell the crowd that you are a health care student and offer to do CPR and advise someone to call the emergency medical services |
| Section C |
| Category I (CC + MMV) |
| No pocket mask, performing both chest compression and mouth-to-mouth ventilation |
| “You are walking alone. You witnessed victim A having cardiopulmonary arrest (no breathing, no pulse) right in front of you. You have no pocket mask with you. Assuming no scene danger and help has already been summoned, would you perform CPR (both mouth-to-mouth and chest compression) if victim A were |
| Scenario 1: your own family member? |
| Scenario 2: your close friend? |
| Scenario 3: a stranger of different gender from you? |
| Scenario 4: a stranger of different race from you? |
| Scenario 5: a stranger of different gender and race from you? |
| Scenario 6: a stranger involved in a motor vehicle accident with facial trauma/bleeding? |
| Scenario 7: a stranger who is a child? |
| Scenario 8: a stranger who is an elderly man/woman from an old folks home? |
| Scenario 9: an unkempt stranger (appeared to look like a drug addict to you)? |
| Scenario 10: a person with whom you have a personal dispute? |
| For each scenario, rate your response with only one of the four options below: |
| A. “Definitely yes” |
| B. “Probably yes” |
| C. “Probably no” |
| D. “Definitely no” |
| Category 2 (CC + PMV) |
| For this category, the above ten hypothetical scenarios are repeated, but this time assuming that the respondent has a pocket mask and is asked to perform mask-to-mouth ventilation besides chest compressions |
| Category 3 (CC) |
| For this category, the above ten hypothetical scenarios are repeated, but this time, assuming that the respondent has no pocket mask and is asked to perform chest compressions only |
Demographic data of the respondents
| Variables | Medical students | Dental students |
|---|---|---|
| Response rate | 148/160 (92.5%) | 56/60 (93.3%) |
| Age (in years) | 23.93 ± 0.90 | 23.33 ± 0.77 |
| Race | ||
| Malay | 109 (73.6%) | 47 (85.5%) |
| Chinese | 37 (25.0%) | 5 (9.0%) |
| Indians | 1 (0.7%) | – |
| Other indigenous races | 1 (0.7%) | 3 (5.5%) |
| Gender | ||
| Male | 45 (30.4%) | 7 (12.7%) |
| Female | 103 (69.6%) | 48 (87.3%) |
| General question: What would you do if you witness a cardiac arrest? | ||
| A. Walk away | – | 2 (3.6%) |
| B. Offer to call ambulance but be afraid to offer to perform CPR | 72 (48.6%) | 28 (50.9%) |
| C. Perform CPR | 76 (51.4%) | 25 (45.5%) |
The various responses to the ten hypothetical scenarios
| Victim who is a | CC + MMV | CC + PMV | CC |
|---|---|---|---|
| Family member | |||
| Definitely yes | 176 (86.7%) | 195 (96.1%) | 195 (96.1%) |
| Probably yes | 25 (12.8%) | 7 (3.4%) | 7 (3.4%) |
| Probably no | 1 (0.5%) | 1 (0.5%) | 1 (0.5%) |
| Definitely no | – | – | – |
| Close friend | |||
| Definitely yes | 119 (58.6%) | 178 (87.7%) | 192 (94.6%) |
| Probably yes | 66 (32.5%) | 24 (11.8%) | 9 (4.4%) |
| Probably no | 17 (8.4%) | 1 (0.5%) | 2 (1.0%) |
| Definitely no | 1 (0.5%) | – | – |
| Stranger of different gender | |||
| Definitely yes | 25 (12.3%) | 114 (56.2%) | 170 (83.7%) |
| Probably yes | 66 (32.5%) | 75 (36.9%) | 23 (11.3%) |
| Probably no | 94 (46.3%) | 13 (6.4%) | 9 (4.5%) |
| Definitely no | 18 (8.9%) | 1 (0.5%) | 1 (0.5%) |
| Stranger of different race | |||
| Definitely yes | 26 (12.8%) | 118 (58.1%) | 164 (80.8%) |
| Probably yes | 78 (38.4%) | 69 (34.0%) | 28 (13.8%) |
| Probably no | 82 (40.4%) | 15 (7.4%) | 10 (4.9%) |
| Definitely no | 17 (8.4%) | 1 (0.5%) | 1 (0.5%) |
| Stranger of different gender and race | |||
| Definitely yes | 18 (8.9%) | 102 (50.3%) | 163 (80.3%) |
| Probably yes | 58 (28.6%) | 75 (36.9%) | 29 (14.3%) |
| Probably no | 94 (46.3%) | 23 (11.3%) | 7 (3.4%) |
| Definitely no | 33 (16.3%) | 3 (1.5%) | 4 (2.0%) |
| Stranger sustaining facial trauma | |||
| Definitely yes | 7 (3.4%) | 69 (34.0%) | 141 (695%) |
| Probably yes | 27 (13.3%) | 72 (35.5%) | 40 (19.7%) |
| Probably no | 75 (36.9%) | 45 (22.1%) | 11 (5.4%) |
| Definitely no | 94 (46.3%) | 17 (8.4%) | 11 (5.4%) |
| Stranger who is a child | |||
| Definitely yes | 50 (24.6%) | 137 (67.5%) | 170 (83.7%) |
| Probably yes | 99 (48.8%) | 58 (28.6%) | 26 (12.8%) |
| Probably no | 47 (23.2%) | 7 (3.4%) | 3 (1.5%) |
| Definitely no | 7 (3.4%) | 1 (0.5%) | 4 (2.0%) |
| Stranger who is elderly | |||
| Definitely yes | 29 (14.3%) | 110 (54.2%) | 165 (81.3%) |
| Probably yes | 79 (38.9%) | 73 (36.0%) | 25 (12.3%) |
| Probably no | 77 (37.9%) | 18 (8.8%) | 8 (3.9%) |
| Definitely no | 18 (8.9%) | 2 (1.0%) | 5 (2.5%) |
| Unkempt stranger | |||
| Definitely yes | 6 (3.0%) | 51 (25.1%) | 107 (52.7%) |
| Probably yes | 7 (3.4%) | 52 (25.6%) | 55 (27.1%) |
| Probably no | 66 (32.5%) | 58 (28.6%) | 29 (14.3%) |
| Definitely no | 124 (61.1%) | 42 (20.7%) | 12 (5.9%) |
| Person with whom you have a personal dispute | |||
| Definitely yes | 26 (12.8%) | 92 (45.4%) | 148 (72.9%) |
| Probably yes | 82 (40.4%) | 75 (36.9%) | 39 (19.2%) |
| Probably no | 66 (32.5%) | 24 (11.8%) | 7 (3.4%) |
| Definitely no | 29 (14.3%) | 12 (5.9%) | 9 (4.4%) |
CC+ MMV chest compressions and mouth-to-mouth ventilation, CC + PMV chest compressions and mask-to-mouth ventilation, CC chest compressions only
Comparison of number of positive responsesa between CC + MMV and CC + PMVb
| If the victim is | CC + MMV | CC + PMV | |
|---|---|---|---|
| A family member | 201 (99.0%) | 202 (99.5%) | 1.0 |
| A close friend | 186 (91.6%) | 202 (99.5%) | < 0.001 |
| A stranger of different gender | 91 (44.8%) | 189 (93.1%) | < 0.001 |
| A stranger of different race | 104 (51.2%) | 187 (92.1%) | < 0.001 |
| A stranger of different gender and race | 76 (37.4%) | 177 (87.2%) | < 0.001 |
| A stranger sustaining facial trauma | 34 (16.7%) | 141 (69.5%) | < 0.001 |
| A stranger who is a child | 149 (73.4%) | 195 (98.1%) | < 0.001 |
| A stranger who is elderly | 108 (53.2%) | 183 (90.1%) | < 0.001 |
| An unkempt stranger | 13 (6.4%) | 103 (50.7%) | < 0.001 |
| A person with whom you have a personal dispute | 108 (53.2%) | 167 (82.3%) | < 0.001 |
aPositive responses are recoded from the variables “definitely yes” and “probably yes”
bThe McNemar test was used for the analysis of these two dependent categorical variables
CC + MMV chest compressions and mouth-to-mouth ventilation, CC + PMV chest compressions and mask-to-mouth ventilation
Comparison of number of positive responsesa between CC + PMV and CCb
| If the victim is | CC + MMV | CC | |
|---|---|---|---|
| A family member | 201 (99.0%) | 202 (99.5%) | 1.0 |
| A close friend | 186 (91.6%) | 201 (99.0%) | < 0.001 |
| A stranger of different gender | 91 (44.8%) | 193 (95.1%) | < 0.001 |
| A stranger of different race | 104 (51.2%) | 192 (94.6%) | < 0.001 |
| A stranger of different gender and race | 76 (37.4%) | 192 (94.6%) | < 0.001 |
| A stranger sustaining facial trauma | 34 (16.7%) | 181 (89.2%) | < 0.001 |
| A stranger who is a child | 149 (73.4%) | 196 (96.6%) | < 0.001 |
| A stranger who is elderly | 108 (53.2%) | 190 (93.6%) | < 0.001 |
| An unkempt stranger | 13 (6.4%) | 162 (79.8%) | < 0.001 |
| A person with whom you have a personal dispute | 108 (53.2%) | 187 (92.1%) | < 0.001 |
aPositive responses are recoded from the variables “definitely yes” and “probably yes”
bThe McNemar test was used for the analysis of these two dependent categorical variables
CC + MMV chest compressions and mouth-to-mouth ventilation, CC chest compressions only
Comparison of number of positive responsesa between CC + PMV and CCb
| If the victim is | CC + PMV | CC | |
|---|---|---|---|
| A family member | 202 (99.5%) | 202 (99.5%) | 1.0 |
| A close friend | 202 (99.5%) | 201 (99.0%) | > 0.95 |
| A stranger of different gender | 189 (93.1%) | 193 (95.1%) | 0.424 |
| A stranger of different race | 187 (92.1%) | 192 (94.6%) | 0.359 |
| A stranger of different gender and race | 177 (87.2%) | 192 (94.6%) | 0.004 |
| A stranger sustaining facial trauma | 141 (69.5%) | 181 (89.2%) | < 0.001 |
| A stranger who is a child | 195 (96.1%) | 196 (96.6%) | > 0.95 |
| A stranger who is elderly | 183 (90.1%) | 190 (93.6%) | 0.143 |
| An unkempt stranger | 103 (50.7%) | 162 (79.8%) | < 0.001 |
| A person with whom you have a personal dispute | 167 (82.3%) | 187 (92.1%) | < 0.001 |
aPositive responses are recoded from the variables “definitely yes” and “probably yes”
bThe McNemar test was used for the analysis of these two dependent categorical variables
CC + PMV chest compressions and mouth-to-mouth ventilation, CC chest compressions only
A comparison of positive response rates among male and female respondents in responding to victim of a different gender
| Positive responses | OR (male:female) | 95% CI | ||
|---|---|---|---|---|
| Category 1: CC + MMV | ||||
| Respondent’s gender | ||||
| Male | 39/52 (75.0%) | < 0.001 | 5.71 | 2.80 – 11.64 |
| Female | 52/151 (34.4%) | |||
| Category 2: CC + PMV | ||||
| Respondent’s gender | ||||
| Male | 52/52 (100%) | = 0.023 | 1.10 | 1.05 – 1.16 |
| Female | 137/151 (90.7%) | |||
| Category 3: CC | ||||
| Respondent’s gender | ||||
| Male | 51/52 (98.1%) | = 0.458 | 3.232 | 0.40 – 26.15 |
| Female | 142/151 (94.0%) | |||
OR odds ratio, CI confidence interval