In American hospitals, on average, inpatients experience at least one medication misstep every day.
Another trial is using skills training on suicidal inpatients at the Walter Reed Army Medical Center.
About 200 inpatients at Middlesbrough's James Cook University Hospital have been alerted to look out for symptoms.
Although closed to inpatients, the remainder of the community hospital is operating as normal, with out-patients' daytime clinics unaffected.
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Archival records show that the Hospital began to face population problems, as inpatients grew older but had no alternative place to go.
It occurs in more than 20% of hospital inpatients and is associated with around half of all potentially preventable deaths in hospital.
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But the SHA said about 50 inpatients had been found to be waiting for treatment longer than the maximum period of nine months.
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"NHS Dumfries and Galloway is also actively engaged in the Scottish Patient Safety Programme which has delivered significant improvements in outcomes for hospital inpatients, " it added.
All inpatients at Papworth are now treated in negative pressure rooms to prevent the spread of airborne bugs and those with the infection are cared for away from the cystic fibrosis unit.
But he said that the less-sick outpatient heart failure sufferers in this trial should not be used to draw conclusions about the safety of Natrecor for heart failure inpatients in hospital wards.
The figures also showed that more than 97% of patients across Scotland had an outpatient appointment within 12 weeks of referral, while more than 97% of inpatients and day cases received treatment within 12 weeks.
Doctors and nurses can and do find more efficient ways of working, lengths of stay are decreasing, inpatients become day cases, day cases become outpatients and outpatients get treated in community community settings, each step leads to a reduction in resources required.
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