This study highlights the clinical differences between early and late onset PD, which have important implications for diagnosis and management.

The data suggest that there are no major geographical variations in the prevalence of PD in the UK and that the age adjusted prevalence rate has remained relatively stable over the past 40 years. Although PD risk is far greater in older subjects, patients with young onset are not that uncommon in the community, and health and social care provision should reflect their needs.

Background: Evidence-based interventions may reduce mortality in surgical patients. This study documented the prevalence of sepsis, adherence to guidelines in its management, and timing of source control in general surgical patients presenting as an emergency.Methods: Patients aged 16 years or more presenting with emergency general surgery problems were identified over a 7-day period and then screened for sepsis compliance (using the Sepsis Six standards, devised for severe sepsis) and the timing of source control (whether radiological or surgical). Exploratory analyses examined associations between the mode (emergency department or general practitioner) and time of admission, adherence to the sepsis guidelines, and outcomes (complications or death within 30 days).Results: Of a total of 5067 patients from 97 hospitals across the UK, 911 (18⋅0 per cent) fulfilled the criteria for sepsis, 165 (3⋅3 per cent) for severe sepsis and 24 (0⋅5 per cent) for septic shock. Timely delivery of all Sepsis Six guidelines for patients with severe sepsis was achieved in four patients. For patients with severe sepsis, 17⋅6-94⋅5 per cent of individual guidelines within the Sepsis Six were delivered. Oxygen was the criterion most likely to be missed, followed by blood cultures in all sepsis severity categories. Surgery for source control occurred a median of 19⋅8 (i.q.r. 10⋅0-35⋅4) h after diagnosis. Omission of Sepsis Six parameters did not appear to be associated with an increase in morbidity or mortality. Conclusion:Although sepsis was common in general surgical patients presenting as an emergency, adherence to severe sepsis guidelines was incomplete in the majority. Despite this, no evidence of harm was apparent. * Members of the UK National Surgical Research Collaborative are co-authors of this study and can be found under the heading Collaborators Paper accepted 25 October 2016Published online in Wiley Online Library (www.bjs.co.uk). DOI: 10.1002/bjs.10432 IntroductionGeneral surgical patients presenting as an emergency account for over 7 per cent of hospital episodes in the USA and 14 000 ICU admissions per year in the UK 1 -3 . Sepsis is prevalent in this patient group. Early diagnosis of severe sepsis and initiation of goal-directed therapy can reduce mortality, irrespective of the need for surgery 4,5 . This evidence was used to develop a care bundle known as the Sepsis Six for managing patients with severe sepsis (Table 1) 6,7 . These standards have been endorsed by many professional organizations, including the Society of Critical Care Medicine, the European Society of Intensive Care Medicine and the Royal Colleges of Surgeons of England and Ireland 1,2,8,9 . Complete application of these interventions is thought to be associated with as much as a one-third reduction in mortality from sepsis, although uptake is uncertain amongst surgical patients presenting as an emergency 4,6 .The main aims of the present study were to assess adherence to the Sepsis Six guidelines and identify the timing of source control in general su...