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- Blohm, M, et al.
(författare)
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Reaction to a media campaign focusing on delay in acute myocardial infarction
- 1991
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Ingår i: Heart & Lung. - : Elsevier. - 0147-9563 .- 1527-3288. ; 20:6, s. 661-666
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Tidskriftsartikel (refereegranskat)abstract
- A media campaign conducted to reduce delay time and to increase the use of ambulance transport in acute myocardial infarction was performed in an urban area with about half a million inhabitants during 1 year. The main message was that chest pain lasting more than 15 minutes might indicate acute myocardial infarction; dial 90,000 immediately for ambulance transport to the hospital. The target population was the general public. After 6 and 12 months 400 and 610 randomly chosen persons, respectively, were contacted by telephone to evaluate the reaction of the general public to the campaign. Of these, 60% and 71%, respectively, had heard of the campaign, and all parts of the message were spontaneously remembered by 15% and 19%, respectively. The reaction to the campaign was generally positive. Among all patients admitted to the coronary care unit of one of the two city hospitals, 65% were aware of the campaign and 31% of them were of the opinion that they came to the hospital faster because of the campaign. In conclusion, a media campaign aimed at reducing patient delay time in acute myocardial infarction was shown to reach a majority of people in the community and patients with ischemic heart disease. The reaction was positive and about one fifth of interviewed people spontaneously remembered the total message.
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- Herlitz, Johan, et al.
(författare)
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Effects of a media campaign to reduce delay times for acute myocardial infarction on the burden of chest pain patients in the emergency department
- 1991
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Ingår i: Cardiology. - : S. Karger AG. - 0008-6312 .- 1421-9751. ; 79:2, s. 127-134
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Tidskriftsartikel (refereegranskat)abstract
- We evaluated the effect of a media campaign aimed at reducing delay times in suspected acute myocardial infarction (AMI) on the volume of chest pain patients seen in the emergency department. During the 1st week of the campaign, the mean number of chest pain patients increased from 10.5 per day prior to the start to 25.4. However, the number declined rapidly in subsequent months. The greatest increase was observed in patients with chest pain in whom AMI was not suspected on examination. During the campaign, 4,805 patients with chest pain appeared in the emergency department as compared with 4,407 patients during the same time period prior to its start, an increase of 9%. The number of patients with confirmed AMI increased from 595 to 629 (6%).
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| 5. |
- Herlitz, Johan, et al.
(författare)
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Follow-up of a 1-year media campaign on delay times and ambulance use in suspected acute myocardial infarction
- 1992
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Ingår i: European Heart Journal. - : Oxford University Press. - 0195-668X .- 1522-9645. ; 13:2, s. 171-177
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Tidskriftsartikel (refereegranskat)abstract
- In order to reduce the delay times from onset of symptoms to arrival in hospital, and increase the use of ambulance in patients with suspected acute myocardial infarction (AMI), a media campaign was initiated in an urban area. An initial 3-week intense campaign was followed by a maintenance phase of 1 year. Delay times and ambulance use during the campaign were compared with the previous 21 months. Among patients admitted to a coronary care unit (CCU) due to suspected AMI, the median delay time was reduced from 3 h to 2 h 40 min and the mean delay time was reduced from 11 h 33 min to 7 h 42 min (P <0.001). Among patients with confirmed AMI the median delay time was reduced from 3 h to 2 h 20 min and the mean delay time from 10 h to 6 h 27 min (P <0.001). We conclude that a 1-year media campaign can reduce delay times in suspected AMI, and that this effect appears to continue at 1 year, but ambulance use seems to be more djfficult to influence.
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- Risenfors, M, et al.
(författare)
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Effect on early intravenous rt-PA on infarct size estimated from serum enzyme activity : results from the TEAHAT Study
- 1991
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Ingår i: Journal of Internal Medicine. - : Wiley-Blackwell Publishing Ltd.. - 0954-6820 .- 1365-2796. ; 734:suppl 1, s. 11-18
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Tidskriftsartikel (refereegranskat)abstract
- In 319 patients who participated in a double-blind trial to evaluate the effect of early rt-PA administration compared to placebo in suspected acute myocardial infarction, infarct size was assessed from analyses of serum activity of lactate dehydrogenase isoenzyme 1 (LD 1). Treatment was always started less than 3 h after the onset of symptoms, with one-third of the patients' treatment being initiated outside the hospital. The maximum activity of LD 1 was reduced by 32%, from 13.3 mu kat l-1 in placebo to 9.0 mu kat l-1 in rt-PA treated patients (P = 0.001). A reduction in LD-1 activity after rt-PA treatment was restricted to patients with ST-elevation in the initial electrocardiogram, and was more pronounced in patients with previous ischaemic heart disease, above median age, and in those with a shorter delay in initiation of treatment. We conclude that very early intravenous treatment with rt-PA limits indirect signs of infarct size. The effect appears to be restricted to patients with ST-segment elevation in their initial electrocardiogram.
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| 7. |
- Hartford, M, et al.
(författare)
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Symptoms, thoughts and environmental factors in suspected acute myocardial infarction
- 1993
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Ingår i: Heart & Lung. - : Elsevier. - 0147-9563 .- 1527-3288. ; 22:1, s. 64-70
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To increase our understanding of patients' reactions and behavior at onset of symptoms of myocardial infarction. PROCEDURE: During a 5-month period a questionnaire focusing on symptoms, thoughts, and environmental factors at onset of symptoms was administered to all patients admitted to the coronary care unit at Sahlgrenska Hospital in Göteborg, Sweden, because of suspected acute myocardial infarction. RESULTS: A myocardial infarction developed in 48% of the 226 patients answering the questionnaire. In 81% of the patients, chest pain was the main symptom bringing them to the hospital. Forty-three percent characterized their symptoms as an oppression or uncomfortable feeling. Eighty-five percent suspected that the pain emanated from the heart, and yet 51% hesitated to go to the hospital, mainly because they expected the pain to disappear. Efforts to relieve pain were made by 63%, (mostly with nitroglycerin), which was taken more often by patients who did not subsequently develop a myocardial infarction than by those who did. Only 50% of the patients used an ambulance for transportation to hospital. There was a significant relation between subjective assessment of severity of symptoms and 1-year mortality (p < 0.05) and rehospitalization rate (p < 0.01), respectively. CONCLUSION: The majority of patients seem to interpret the symptoms of a myocardial infarction correctly and also have a correct perception of the severity of symptoms. For only a few is the natural next step to immediately call for an ambulance to get to the hospital.
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| 10. |
- Adal, M, et al.
(författare)
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Determination of monomer reactivity ratios in the copolymerization of ethylene oxide and propylene oxide
- 1994
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Ingår i: Tenside Surfactants Detergents. - 0932-3414 .- 2195-8564. ; 31, s. 9-11
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Tidskriftsartikel (refereegranskat)abstract
- The reactivity ratios r1 (EO) and r2 (PO) for the copolymerization of ethylene oxide (EO) and propylene oxide (PO) have been determined. The reactions were carried out in dry dimethyl formamide at 90°C using the potassium salt of ethylene glycol as initiator. The polymer composition at different EO/PO ratios in the feed was determined by 1H-NMR. Using the Fineman-Ross method to calculate reactivity ratios from the values of polymer composition, rl- and r2-values of 1.8 and 0.3, respectively, were obtained.
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