Administrative data underestimate acute ischemic stroke events and thrombolysis treatments: Data from a multicenter validation survey in Italy.

BACKGROUND: Informing health systems and monitoring hospital performances using administrative data sets, mainly hospital discharge data coded according to International-Classification-Diseases-9edition-Clinical-Modifiers (ICD9-CM), is now commonplace in several countries, but the reliability of diagnostic coding of acute ischemic stroke in the routine practice is uncertain. This study aimed at estimating accuracy of ICD9-CM codes for the identification of acute ischemic stroke and the use of thrombolysis treatment comparing hospital discharge data with medical record review in all the six hospitals of the Florence Area, Italy, through 2015. METHODS: We reviewed the medical records of all the 3915 potential acute stroke events during 2015 across the six hospitals of the Florence Area, Italy. We then estimated sensitivity and Positive Predictive Value of ICD9-CM code-groups 433*1, 434*1 and thrombolysis code 99.10 against medical record review with clinical adjudication. For each false-positive case we obtained the actual diagnosis. For each false-negative case we obtained the primary and secondary ICD9-CM diagnoses. RESULTS: The medical record review identified 1273 acute ischemic stroke events. The hospital discharge records identified 898 among those (true-positive cases),but missed 375 events (false-negative cases), and identified 104 events that were not eventually confirmed as acute ischemic events (false-positive cases). Code-group specific Positive Predictive Value was 85.7% (95%CI,74.6-93.3) for 433*1 and 89.9% (95%CI, 87.8-91.7) for 434*1 codes. Thrombolysis treatment, as identified by ICD9-CM code 99.10, was only documented in 6.0% of acute ischemic stroke events, but was 13.6% in medical record review. CONCLUSIONS: Hospital discharge data were found to be fairly specific but insensitive in the reporting of acute ischemic stroke and thrombolysis, providing misleading indications about both quantity and quality of acute ischemic stroke hospital care. Efforts to improve coding accuracy should precede the use of hospital discharge data to measure hospital performances in acute ischemic stroke care.

Implementing a donation after circulatory death program in a setting of donation after brain death activity.

BACKGROUND: Donation after circulatory death (DCD) is an emerging way to implement organ procurement for transplantation. In Italy, until June 2016, the only formal DCD program was implemented in Pavia, the so-called "Alba program." METHODS: We describe our one-year experience of the DCD program implemented at the Careggi Teaching Hospital (Florence, Italy) since June 2016. We specifically describe organizational changes induced by the DCD program on our pre-existing Donation After Brain Death (DBD) program and DCD activity. RESULTS: Eighteen activations were recorded (i.e. 18 DCD donors), among whom Seven donors were discarded due to opposition in five patients and failure to meet activation criteria in two (inability to contact relatives). Our population comprises 11 donors among whom eight patients were Maastricht type II donors while three were Maastricht type III donors. 22 kidneys and six livers were retrieved, while 13 kidneys and two liver were transplanted. CONCLUSIONS: A DCD program was feasible and increased procurement of splancnic organs (kidney and liver). Starting a DCD program in a traditionally oriented to DBD poses some organizational and cultural problems. A skilled, experienced ECMO team is necessary to guarantee organ ex vivo perfusion. Another important aspect for the implementation of a DCD program is the collaboration with the emergency system which allows a therapeutic approach of patients with cardiac arrest.