Iowa Developments, Volume 16, Number 3

Business news from the Iowa Department of Economic Development

Incidência de úlceras por pressão em pacientes de Unidade de Terapia Intensiva Cardiopneumológica

RESUMO Objetivo Identificar e analisar os coeficientes de incidência de úlceras por pressão (UP) e os fatores de risco para o seu desenvolvimento em pacientes críticos com doenças cardiopneumológicas. Método Estudo de coorte, prospectivo realizado na Unidade de Terapia Intensiva (UTI) Cardiopneumológica de um hospital de grande porte na cidade de São Paulo, durante os meses de novembro de 2013 a fevereiro de 2014. Participaram do estudo 370 pacientes maiores de 18 anos, que não apresentavam UP na admissão e que estavam na UTI há menos de 24 horas. Os dados foram analisados por meio de análises univariadas e multivariada (Classification And Regression Tree - CART). Resultados Os coeficientes de incidência de UP foram: 11,0% para o total, distribuindo-se em 8,0% entre os homens e 3,0% para as mulheres (p=0,018); 10,0% na raça branca e 6,5% em pessoas com idade igual e superior a 60 anos. Os principais fatores de risco encontrados foram tempo de permanência na UTI igual ou superior a 9,5 dias, idade igual ou superior a 42,5 anos e raça branca. Conclusão O estudo contribui para os conhecimentos relacionados à epidemiologia das UP em pacientes críticos com doenças cardiopneumológicas, favorecendo o planejamento de cuidados preventivos específicos para essa clientela.

Instrumento de medida de carga de trabalho dos profissionais de Saúde na Atenção Primária: desenvolvimento e validação

RESUMO Objetivo Propor e validar um instrumento que contemple as intervenções/atividades realizadas pela equipe de saúde da família, como referência para o planejamento da força de trabalho. Método Pesquisa metodológica desenvolvida nas etapas: construção do instrumento; validação de conteúdo e teste piloto, em três unidades, localizadas na região sudeste do Brasil. Resultados Foram validadas 39 intervenções em um único instrumento de medida de carga de trabalho para médico, cirurgião-dentista, técnico/auxiliar de saúde bucal, enfermeiro, técnico/auxiliar de enfermagem e agente comunitário de saúde. No teste piloto, o instrumento contemplou 100% das intervenções observadas, atingindo 93,7% de concordância entre os observadores. Conclusão O instrumento proposto, inédito na sua configuração, subsidia o planejamento da força de trabalho em atenção primária.

Volume expansion enhances plasma endothelin-1.

We hypothesized that acute volume expansion by saline infusion triggers the release of endothelin-1. Bolus intravenous saline infusion (8 mL/min) in six groups of conscious Wistar rats and spontaneously hypertensive rats did not change mean arterial pressure or heart rate (n = 8 to 12). At 1 min after infusion, the plasma endothelin-1 level was significantly increased in Wistar rats and in spontaneously hypertensive rats by 42% and 61%, respectively (unpaired data). In 12 Wistar rats, the endothelin-1 level increased from 0.68 +/- 0.13 to 1.19 +/- 0.17 fmol/mL (mean +/- SEM, P <.0001, paired data). Thus, acute volume load by rapid saline infusion increases plasma endothelin-1 levels. Vasoconstriction induced by endothelin-1 may counteract enhanced circumferential stretch created by volume expansion.

On the impact of leverage constraints on asset prices and trading volume

Researchers have used stylized facts on asset prices and trading volumein stock markets (in particular, the mean reversion of asset returnsand the correlations between trading volume, price changes and pricelevels) to support theories where agents are not rational expected utilitymaximizers. This paper shows that this empirical evidence is in factconsistent with a standard infite horizon perfect information expectedutility economy where some agents face leverage constraints similar tothose found in todays financial markets. In addition, and in sharpcontrast to the theories above, we explain some qualitative differencesthat are observed in the price-volume relation on stock and on futuresmarkets. We consider a continuous-time economy where agents maximize theintegral of their discounted utility from consumption under both budgetand leverage con-straints. Building on the work by Vila and Zariphopoulou(1997), we find a closed form solution, up to a negative constant, for theequilibrium prices and demands in the region of the state space where theconstraint is non-binding. We show that, at the equilibrium, stock holdingsvolatility as well as its ratio to stock price volatility are increasingfunctions of the stock price and interpret this finding in terms of theprice-volume relation.

Physical considerations on discrepancies in target volume delineation.

BACKGROUND AND PURPOSE: To compare the delineations and interpretations of target volumes by physicians in different radio-oncology centers. MATERIALS AND METHODS: Eleven Swiss radio-oncology centers delineated volumes according to ICRU 50 recommendations for one prostate and one head and neck case. In order to evaluate the consistency of the volume delineations, the following parameters were determined: 1) the target volumes (GTV, CTV and manually expanded PTV) and their extensions in the three main axes and 2) the correlation of the volume delineated by each pair of centers using the ratio of the intersection to the union (called proximity index). RESULTS: The delineated prostate volume was 105+/-55cm(3) for the CTV and 218+/-44cm(3) for the PTV. The delineated head and neck volume was 46+/-15cm(3) for the GTV, 327+/-154cm(3) for the CTV and 528+/-106cm(3) for the PTV. The mean proximity index for the prostate case was 0.50+/-0.13 for the CTV and 0.57+/-0.11 for the PTV. The proximity index for the head and neck case was 0.45+/-0.09 for the GTV, 0.42+/-0.13 for the CTV and 0.59+/-0.06 for the PTV. CONCLUSIONS: Large discrepancies between all the delineated target volumes were observed. There was an inverse relationship between the CTV volume and the margin between CTV and PTV, leading to less discrepancies in the PTV than is the CTV delineations. There was more spread in the sagittal and frontal planes due to CT pixel anisotropy, which suggests that radiation oncologists should delineate the target volumes not only in the transverse plane, but also in the sagittal and frontal planes to improve the delineation by allowing a consistency check.

Iowa Developments, January 2008, Volume 12, Number 1

Business news from the Iowa Department of Economic Development

Tour Iowa, Volume No. 7, Issue No. 2, Spring 2008

A periodic e-newsletter from the Iowa Tourism Office for group tour planners that focuses on "new, unusual, and just plain different" opportunities for group travelers.

EORTC-ROG expert opinion: radiotherapy volume and treatment guidelines for neoadjuvant radiation of adenocarcinomas of the gastroesophageal junction and the stomach.

PURPOSE: The Gastro-Intestinal Working Party of the EORTC Radiation Oncology Group (GIWP-ROG) developed guidelines for target volume definition in neoadjuvant radiation of adenocarcinomas of the gastroesophageal junction (GEJ) and the stomach. METHODS AND MATERIALS: Guidelines about the definition of the clinical target volume (CTV) are based on a systematic literature review of the location and frequency of local recurrences and lymph node involvement in adenocarcinomas of the GEJ and the stomach. Therefore, MEDLINE was searched up to August 2008. Guidelines concerning prescription, planning and treatment delivery are based on a consensus between the members of the GIWP-ROG. RESULTS: In order to support a curative resection of GEJ and gastric cancer, an individualized preoperative treatment volume based on tumour location has to include the primary tumour and the draining regional lymph nodes area. Therefore we recommend to use the 2nd English Edition of the Japanese Classification of Gastric Carcinoma of the Japanese Gastric Cancer Association which developed the concept of assigning tumours of the GEJ and the stomach to anatomically defined sub-sites corresponding respectively to a distinct lymphatic spread pattern. CONCLUSION: The GIWP-ROG defined guidelines for preoperative irradiation of adenocarcinomas of the GEJ and the stomach to reduce variability in the framework of future clinical trials.

Iowa Developments, May 2008, Volume 17, Number 3

Business News from the Iowa Department of Economic Development

Iowa Developments, Volume 17, Number 4

Business news from the Iowa Department of Economic Development

Iowa Developments, August 2008, Volume 17, Number 5

Business Development news from the Iowa Department of Economic Development