INTRODUCTION The objective of this study was to investigate regional organ perfusion acutely following uncontrolled hemorrhage in an animal model that simulates a penetrating vascular injury and accounts for prehospital times in urban trauma. We set forth to determine if hypotensive resuscitation (permissive hypotension) would result in equivalent organ perfusion compared to normotensive resusc...

Quantitave EEG profile was recorded for 60 age and sex matched drug free/naive schizophrenia patients, divided into two groups based on the presence and absence of Formal Thought Disorder (FTD) and a group of 30 matched healthy participants. Coherence and power spectrum analysis revealed that as compared to normal controls, schizophrenia patients with FTD had decreased regional power and intra ...

AIMS C-11 acetate PET imaging allows quantification of myocardial oxidative metabolism. We sought to assess the reproducibility of such analysis with the Carimas software. METHODS AND RESULTS The myocardial oxygen consumption rate was assessed via a kmono index--the clearance rate constant of a mono-exponential function fitted to a C-11 acetate clearance curve. Two observers of different expe...

Cerebral Complications Following Measurements of Regional Cerebral Blood Flow (rCBF) With the Intra-arterial Injection Method • The rate of complications was studied following measurements of regional cerebral blood flow (rCBF) with the intra-arterial Xenon technique. The investigation was based upon reports of rCBF measurements in close to 4,000 patients, carried out at 18 European and America...

The use of different objective functions in hierarchical aggregation procedures is examined in this paper. Specifically, we analyse the use of the original Intramax objective function, the sum-of-flows objective function, the sum-of-proportions-to-intra-regional-flows objective function, Smart’s weighted interaction index, the first and second CURDS weighted interaction indices, and Tolbert and...

Prevalence of severe food insecurity was estimated for Brazilian municipalities based on the 2004 National Household Sample Survey (PNAD). First, a logistic regression model was developed and tested with this database. The model was then applied to the 2000 census data, generating severe food insecurity estimates for the Brazilian municipalities, which were subsequently analyzed according to th...

The Effect of Intraarterial Papaverine on the Regional Cerebral Blood Flow in Patients with Stroke or Intracranial Tumor • The effect of intracarotid injection of 10 mg of papaverine on regional cerebral blood flow was measured in 27 patients. Most of the patients had cerebral infarction or intracranial neoplasm. The intra-arterial Xenon injection method was used and 16 or 35 regions of the dis...