EuroSCORE is a simple, objective and up-to-date system for assessing heart surgery, soundly based on one of the largest, most complete and accurate databases in European cardiac surgical history. We recommend its widespread use.

A number of risk factors contribute to cardiac surgical mortality in Europe. This information can be used to develop a risk stratification system for the prediction of hospital mortality and the assessment of quality of care.

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Objective To assess the frequency and nature of adverse events to patients in selected hospitals in developing or transitional economies. Participants Convenience sample of 26 hospitals from which 15 548 patient records were randomly sampled. DesignMain outcome measures Two stage screening. Initial screening based on 18 explicit criteria. Records that screened positive were then reviewed by a senior physician for determination of adverse event, its preventability, and the resulting disability.Results Of the 15 548 records reviewed, 8.2% showed at least one adverse event, with a range of 2.5% to 18.4% per country. Of these events, 83% were judged to be preventable, while about 30% were associated with death of the patient. About 34% adverse events were from therapeutic errors in relatively non-complex clinical situations.Inadequate training and supervision of clinical staff or the failure to follow policies or protocols contributed to most events. ConclusionsUnsafe patient care represents a serious and considerable danger to patients in the hospitals that were studied, and hence should be a high priority public health problem. Many other developing and transitional economies will probably share similar rates of harm and similar contributory factors. The convenience sampling of hospitals might limit the interpretation of results, but the identified adverse event rates show an estimate that should stimulate and facilitate the urgent institution of appropriate remedial action and also to trigger more research. Prevention of these adverse events will be complex and involves improving basic clinical processes and does not simply depend on the provision of more resources. IntroductionPreventable harm to patients resulting from their healthcare is unacceptable at any time. Patient safety is first and foremost a clinical problem, but it is also an important cause of wasted resources. Keeping patients safe can also be viewed as a public health problem and a human rights issue.1 Documentation of the scale of iatrogenic harm to patients has been accelerating [3][4][5] and the focus moved from negligence to preventability. Results suggested that rates of adverse events in patients in hospital in the developed world were much higher than previously thought, with multiple studies showing rates of at least 8%. 6 Of these adverse events, more than 50% were judged to be preventable, and a worrying number of the patients experienced permanent disability or death as a result of the events. These reports suggest that the deaths of between 0.5% and 2% of patients in hospital are associated with an adverse event, which was often, but not always, preventable. These studies would rank harm from healthcare high on the list of all causes of death for the countries being studied. All published studies to date, however, have been from developed countries, with no reports from developing or transitional economies. This knowledge gap is a serious limitation to understanding the extent of the problem at the global level and, more imp...

Objectives To compare the effectiveness, reliability, and acceptability of estimating rates of adverse events and rates of preventable adverse events using three methods: cross sectional (data gathered in one day), prospective (data gathered during hospital stay), and retrospective (review of medical records). Design Independent assessment of three methods applied to one sample. Setting 37 wards in seven hospitals (three public, four private) in southwestern France. Participants 778 patients: medical (n = 278), surgical (n = 263), and obstetric (n = 237). Main outcome measuresThe main outcome measures were the proportion of cases (patients with at least one adverse event) identified by each method compared with a reference list of cases confirmed by ward staff and the proportion of preventable cases (patients with at least one preventable adverse event). Secondary outcome measures were inter-rater reliability of screening and identification, perceived workload, and face validity of results. Results The prospective and retrospective methods identified similar numbers of medical and surgical cases (70% and 66% of the total, respectively) but the prospective method identified more preventable cases (64% and 40%, respectively), had good reliability for identification ( = 0.83), represented an acceptable workload, and had higher face validity. The cross sectional method showed a large number of false positives and identified none of the most serious adverse events. None of the methods was appropriate for obstetrics. Conclusion The prospective method of data collection may be more appropriate for epidemiological studies that aim to convince clinical teams that their errors contribute significantly to adverse events, to study organisational and human factors, and to assess the impact of risk reduction programmes.