Date Published: 23 January 2014

Heart attack survival higher in Sweden than in UK, according to recent UCL study

A major new study recently published in the medical journal 'The Lancet' states that the likelihood of a person surviving a heart attack is significantly lower in the UK than it is Sweden. This conclusion is based on research carried out at University College London (UCL) in the UK, in collaboration with colleagues in Sweden.

Using whole-country data from national clinical registries, the researchers analysed time trends for quality of care and outcomes for all hospitals and patients diagnosed between 2004 and 2010 ? 119,786 patients from 86 hospitals in Sweden and 391,077 patients from 242 hospitals in the UK.

The statistics revealed that 30 days after a heart attack, death rates for UK patients were more than a third higher than for Swedish patients (10.5% vs 7.6%). Although the difference in death rates did decrease over time, mortality was consistently higher in the UK.

After adjusting for differences in case mix using a model that took into account 17 variables including demography (e.g. age and sex), severity of acute myocardial infarction [heart attack], and various risk factors (e.g. smoking and diabetes - see also heart disease risk factors), the researchers estimated that 11,263 deaths over the 7 years of study could have been delayed or prevented in the UK if patients had received the same care as their Swedish counterparts.

Comments from experts, including authors of the recent study:

" Our findings are a cause for concern," said study leader Professor Harry Hemingway, of the Farr Institute of Health Informatics Research, and the National Institute for Cardiovascular Outcomes Research at UCL.
" The uptake and use of new technologies and effective treatments recommended in guidelines has been far quicker in Sweden. This has contributed to large differences in the management and outcomes of patients."

According to co-study leader Dr Tomas Jernberg from Karolinska University Hospital in Sweden,

" Our findings suggest that failure to get the best treatment is one likely reason why short-term survival for heart attack patients is lower in the UK.
_ ...
_ In particular, we noted that the uptake of primary percutaneous coronary intervention (procedures such as balloon angioplasty or stent placement used to open narrowed coronary arteries; 59% vs 22%) and prescribing of recommended treatments at discharge (eg, beta blockers; 89% vs 78%) were lower in the UK than Sweden. In Sweden, the quality improvement work associated with quality registries has increased our ability to adhere to guidelines

The authors concluded that:

" International comparisons of care and outcome registries might inform new research and policy initiatives to improve the quality of health systems."

Writing in a linked Lancet Comment, Dr Chris Gale of Leeds University (England, UK) and Keith Fox of Edinburgh University (Scotland, UK), said:

" Through highlighting the prospect of a substantial excess of deaths in the UK compared with Sweden, Chung and colleagues have drawn our attention to the need for further comparative effectiveness research for acute myocardial infarction. Efforts to improve cardiovascular outcomes in the UK should, therefore, concentrate on data enhancement through the linkage of electronic health-care records and the early and systematic implementation of evidence-based therapies across the National Health Service."

Source: University College London (UCL),
part of London University, England.

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