Incidence of sight-threatening diabetic retinopathy in people with Type 2 diabetes mellitus and numbers needed to screen: a systematic review.

AIM: To investigate the incidence of sight-threatening diabetic retinopathy in Type 2 diabetes mellitus. BACKGROUND: In most countries, yearly or biennial screening intervals for diabetic retinopathy in people with Type 2 diabetes are recommended. Fewer screening sessions reduce the effort required of people with Type 2 diabetes and reduce healthcare costs. METHODS: We conducted a search of PubMed, Embase, Web of Science and the COCHRANE Library for studies published betweeen 1 January 2000 and 1 January 2017. Eligible studies were those that included general populations of >100 people with Type 2 diabetes mellitus. Additional study population criteria were absence of moderate diabetic retinopathy or more severe diabetic retinopathy at last screening session and at least two gradable retinal screening sessions. Outcomes of interest in the included studies were moderate and severe non-proliferative diabetic retinopathy (R2), proliferative diabetic retinopathy (R3) or maculopathy (M1), collectively known as sight-threatening or referable diabetic retinopathy. RESULTS: A total of 17 studies were included. In people with Type 2 diabetes without or with only mild diabetic retinopathy at baseline, the average incidence rates of sight-threatening diabetic retinopathy were ~1 per 100 person-years and ~8 per 100 person-years, respectively. The average numbers needed to screen to detect one case of sight-threatening diabetic retinopathy were 175 and 19 in people without and with mild retinopathy at last screening, respectively. CONCLUSION: In people with Type 2 diabetes without retinopathy at last screening, the incidence of severe sight-threatening retinopathy at the subsequent screening session was low. In people with mild retinopathy, progression to sight-threatening diabetic retinopathy was nearly 10-fold higher. This review supports lengthening of the screening interval of patients with Type 2 diabetes without retinopathy at last screening session.

Anatomical and functional results after treatment of dislocated supracondylar fractures of the humerus in children.

From 1972 to 1983 105 patients were admitted with a dislocated supracondylar fracture of the humerus. The average follow-up was five years. In general the functional results of treatment were good. The anatomical results were less satisfactory, and most times concerned varus deformities of the elbow, which did not influence the elbow function. Lesions of arteries and nerves only occurred in seriously dislocated fractures. The isolated nerve injuries were reversible. Two patients developed a Volkmann's ischemic contracture; their case history is discussed. In 24 cases a second reduction was performed and/or a new therapy instituted. Closed reduction with plaster necessitated alteration of the therapy in 10 out of 23 cases. Based on this experience and the long average duration of hospitalization of 14 days, closed reduction under general anaesthesia with percutaneous K-wire fixation seems to be the treatment of choice.