Local Gas Analysis in Patients with Venous Ulcers

1994 ◽  
pp. 523-527
Author(s):  
Živan V. Maksimović ◽  
Tomislav Jovanović ◽  
Slobodanka Dukić ◽  
Siniša Jagodić
Keyword(s):  
Gas Analysis ◽  
Venous Ulcers

Locomotive Boiler Flue Gas Analysis*

1912 ◽  
Vol 74 (1914supp) ◽  
pp. 159-160
Author(s):  
Lawford H. Fry
Keyword(s):  
Flue Gas ◽  
Gas Analysis

The treatment of venous leg ulcers with a specifically designed compression stocking kit

Phlebologie ◽  
2008 ◽  
Vol 37 (04) ◽  
pp. 191-197 ◽  
Author(s):  
V. Mattaliano ◽  
G. Mosti ◽  
V. Gasbarro ◽  
M. Bucalossi ◽  
W. Blättler ◽  
...  
Keyword(s):  
Patient Characteristics ◽  
Compression Stocking ◽  
Leg Ulcers ◽  
Compression Stockings ◽  
Venous Leg Ulcers ◽  
Venous Ulcers ◽  
Time To Completion ◽  
Validated Questionnaire ◽  
First Choice ◽  
Ankle Movement

SummaryTraditionally, venous leg ulcers are treated with firm nonelastic bandages. Medical compression stockings are not the first choice although comparative studies found them equally effective or superior to bandages. Patients, methods: We report on a multi-center randomized trial with 60 patients treated with either short stretch multi-layer bandages or a two-stocking system (Sigvaris® Ulcer X® kit). Three patients have been excluded because their ankle movement was restricted to the extent that they could not put on the stockings and 1 patient withdrew consent. Patient characteristics and ulcer features were evenly distributed. The proportion of ulcers healed within 4 months and the time to completion of healing were recorded. Subjective appraisal was assessed with a validated questionnaire. Results: Complete wound closure was achieved in 70.0% (21 of 30) with bandages and in 96.2% (25 of 26) with the ulcer X kit (p = 0.011). Ulcers with a diameter of up to about 4cm healed twice as rapidly, the larger ones as fast with the stocking kit as with bandages. The sum of problems encountered with bandages was significantly greater than that observed with the stocking kit (p < 0.0001). Pain at night and in the morning was absent with stockings but reported by 40% and 20% in the bandage group, respectively. The cardinal features associated with delayed or absent healing were ulcer size and pain. Conclusions: Common venous ulcers can readily be treated with the ulcer X compression kit provided the ankle movement allow its painless donning. Bandages, even when applied by the most experienced staff are less effective and cause more problems.

Healing venous ulcers with different modalities of leg compression

Phlebologie ◽  
2006 ◽  
Vol 35 (05) ◽  
pp. 349-355 ◽  
Author(s):  
E. O. Brizzio ◽  
G. Rossi ◽  
A. Chirinos ◽  
I. Cantero ◽  
G. Idiazabal ◽  
...  
Keyword(s):  
Wound Care ◽  
Univariate Analysis ◽  
Compression Therapy ◽  
Healing Time ◽  
Clinical Parameters ◽  
Compression Stockings ◽  
Local Pressure ◽  
Ulcer Size ◽  
Venous Ulcers ◽  
Unexpected Findings

Summary Background: Compression therapy (CT) is the stronghold of treatment of venous leg ulcers. We evaluated 5 modalities of CT in a prospective open pilot study using a unique trial design. Patients and methods: A group of experienced phlebologists assigned 31 consecutive patients with 35 venous ulcers (present for 2 to 24 months with no prior CT) to 5 different modalities of leg compression, 7 ulcers to each group. The challenge was to match the modality of CT with the features of the ulcer in order to achieve as many healings as possible. Wound care used standard techniques and specifically tailored foam pads to increase local pressure. CT modalities were either stockings Sigvaris® 15-20, 20-30, 30-40 mmHg, multi-layer bandages, or CircAid® bandaging. Compression was maintained day and night in all groups and changed at weekly visits. Study endpoints were time to healing and the clinical parameters predicting the outcome. Results: The cumulative healing rates were 71%, 77%, and 83% after 3, 6, and 9 months, respectively. Univariate analysis of variables associated with nonhealing were: previous surgery, presence of insufficient perforating and/or deep veins, older age, recurrence, amount of oedema, time of presence of CVI and the actual ulcer, and ulcer size (p <0.05-<0.001). The initial ulcer size was the best predictor of the healing-time (Pearson r=0.55, p=0.002). The modality of CT played an important role also, as 19 of 21 ulcers (90%) healed with stockings but only 8 of 14 with bandages (57%; p=0.021). Regression analysis allowed to calculate a model to predict the healing time. It compensated for the fact that patients treated with low or moderate compression stockings were at lower risk of non-healing. and revealed that healing with stockings was about twice as rapid as healing with bandages. Conclusion: Three fourths of venous ulcers can be brought to healing within 3 to 6 months. Healing time can be predicted using easy to assess clinical parameters. Irrespective of the initial presentation ulcer healing appeared more rapid with the application of stockings than with bandaging. These unexpected findings contradict current believes and require confirmation in randomised trials.

Efficacy of Near-Infrared Spectrometry for Monitoring the Cerebral Effects of Severe Dilutional Anemia

2014 ◽  
Vol 17 (3) ◽  
pp. 154 ◽  
Author(s):  
Arıtürk Cem ◽  
Ustalar Serpil ◽  
Toraman Fevzi ◽  
Ökten Murat ◽  
Güllü Ümit ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cardiac Surgery ◽  
Blood Lactate ◽  
Near Infrared ◽  
Bypass Graft ◽  
Blood Gas Analysis ◽  
Gas Analysis ◽  
Infrared Spectrometry ◽  
Control Group ◽  
Near Infrared Spectrometry

<p><strong>Introduction:</strong> Clear guidelines for red cell transfusion during cardiac surgery have not yet been established. The current focus on blood conservation during cardiac surgery has increased the urgency to determine the minimum safe hematocrit for these patients. The aim of this study was to determine whether monitoring of cerebral regional oxygen saturation (rSO<sub>2</sub>) via near-infrared spectrometry (NIRS) is effective for assessing the cerebral effects of severe dilutional anemia during elective coronary arterial bypass graft surgery (CABG).</p><p><strong>Methods:</strong> The prospective observational study involved patients who underwent cerebral rSO<sub>2</sub> monitoring by NIRS during elective isolated first-time CABG: an anemic group (<em>N</em>=15) (minimum Hemoglobin (Hb) N=15) (Hb &gt;8 g/dL during CPB). Mean arterial pressure (MAP), pump blood flow, blood lactate level, pCO<sub>2</sub>, pO<sub>2</sub> at five time points and cross-clamp time, extracorporeal circulation time were recorded for each patient. Group results statistically were compared.</p><p><strong>Results:</strong> The anemic group had significantly lower mean preoperative Hb than the control group (10.3 mg/dL versus 14.2 mg/dL; <em>P</em> = .001). The lowest Hb levels were observed in the hypothermic period of CPB in the anemic group. None of the controls exhibited a &gt;20% decrease in cerebral rSO<sub>2</sub>. Eleven (73.3%) of the anemic patients required an increase in pump blood flow to raise their cerebral rSO<sub>2</sub>.</p><p><strong>Conclusions:</strong> In this study, the changes in cerebral rSO<sub>2</sub> in the patients with low Hb were within acceptable limits, and this was in concordance with the blood lactate levels and blood-gas analysis. It can be suggested that NIRS monitoring of cerebral rSO<sub>2</sub> can assist in decision making related to blood transfusion and dilutional anemia during CPB.</p>

Blood gas analysis in newborns with low cardiac output syndrome after cardiac surgery.

2018 ◽  
Vol 19 (5) ◽  
pp. 676-687
Author(s):  
G.G. Khubulava ◽  
A.B. Naumov ◽  
S.P. Marchenko ◽  
O.Yu. Chupaeva ◽  
A.A. Seliverstova ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Cardiac Surgery ◽  
Blood Gas Analysis ◽  
Gas Analysis ◽  
Blood Gas ◽  
Low Cardiac Output Syndrome ◽  
Low Cardiac Output

Medidas para prevenção de recidivas de úlceras venosas

2020 ◽  
Vol 10 (31) ◽  
pp. 96-104
Author(s):  
Caroline Muller Almeida ◽  
Suelen Elias da Veiga Freitas ◽  
Aline Affonso Luna ◽  
Cintia Silva Fassarella ◽  
Priscilla Alfradique de Souza
Keyword(s):  
Relapse Prevention ◽  
Selection Criteria ◽  
Preventive Measures ◽  
Venous Ulcer ◽  
Limiting Factor ◽  
Venous Ulcers ◽  
Ulcer Relapse ◽  
Varicose Ulcer ◽  
Key Word ◽  
Review Study

Identificar e analisar evidências científicas adotadas na prevenção de recidivas de úlceras venosas. Trata-se de um estudo de revisão integrativa da literatura, descritivo, de abordagem qualitativa, realizado entre outubro e novembro de 2017, a partir de consulta de bases de dados nacionais e internacionais. Os descritores utilizados foram “úlcera venosa”, “úlcera varicosa”, “recidiva” associados à palavra chave “prevenção”. Recorreu análise temática de conteúdo, emergindo duas categorias. Dos 305 artigos encontrados, 10 foram selecionados atendendo aos critérios de seleção. As principais evidências observadas foram “medidas para a prevenção de recidivas de úlceras venosas” e “facilidades e dificuldades da implementação de medidas preventivas”. Evidenciou-se que as medidas são diversas para prevenir as recidivas de úlcera venosa, no entanto, a adesão ainda é fator limitador as práticas devido à complexidade que a envolve.Descritores: Úlcera Venosa, Recidiva, Prevenção. Measures to prevent recurrence of venous ulcersAbstract: To identify and analyze scientific evidences adopted in the prevention of venous ulcers recurrences. It is an integrative literature review study, descriptive, with a qualitative approach, carried out between October and November 2017, based on consultation of national and international databases. The descriptors used were "venous ulcer", "varicose ulcer", "relapse" associated with the key word "prevention". It resorted to thematic analysis of content, emerging two categories. Of the 305 articles found, 10 were selected according to the selection criteria. The main evidences observed were "measures for the prevention of relapses of venous ulcers" and "facilities and difficulties of the implementation of preventive measures". It was evidenced that the measures are diverse to prevent the recurrence of venous ulcer, however, adherence is still a limiting factor to the practices due to the complexity that involves it.Descriptors: Venous Ulcer, Relapse, Prevention. Medidas para la prevención de recidivas de úlceras venosasResumen: Identificar y analizar evidencias científicas adoptadas en la prevención de recidivas de úlceras venosas. Este es un estudio integrador de revisión de literatura, descriptivo, con un enfoque cualitativo, realizado entre octubre y noviembre de 2017, basado en la consulta de bases de datos nacionales e internacionales. Los descriptores utilizados fueron "úlcera venosa", "úlcera varicosa", "recidiva" asociados a la palabra clave "prevención". Se recurrió análisis temático de contenido, emergiendo dos categorías. De los 305 artículos encontrados, 10 fueron seleccionados atendiendo a los criterios de selección. Las principales evidencias observadas fueron "medidas para la prevención de recidivas de úlceras venosas" y "facilidades y dificultades de la aplicación de medidas preventivas". Se evidenció que las medidas son diversas para prevenir las recidivas de úlcera venosa, sin embargo, la adherencia todavía es factor limitante en las prácticas debido a la complejidad que la envuelve.Descriptores: Úlcera Varicosa, Recurrencia, Prevención.

Thermal soak compatibility test and residual gas analysis on 4130 steel and methanol thermosyphons

1997 ◽  
Author(s):  
Q. He ◽  
Pon Ponnappan ◽  
J. Brown ◽  
Q. He ◽  
Pon Ponnappan ◽  
...  
Keyword(s):  
Gas Analysis ◽  
Compatibility Test ◽  
Residual Gas

Influence of VC and FEC Additives on Interphase Properties of Carbon in Li-Ion Cells Investigated by Combined EIS & EQCM-D

2020 ◽  
Author(s):  
Paul Kitz ◽  
Matthew Lacey ◽  
Petr Novák ◽  
Erik Berg
Keyword(s):  
Electrochemical Impedance ◽  
Solid Electrolyte Interphase ◽  
Electrochemical Quartz Crystal Microbalance ◽  
Gas Analysis ◽  
Side Reactions ◽  
Ion Diffusion ◽  
Battery Cell ◽  
Anode Passivation ◽  
Order Of Magnitude ◽  
Li Ion

<div>The electrolyte additives vinylene carbonate (VC) and fluoroethylene carbonate (FEC) are well known for increasing the lifetime of a Li-ion battery cell by supporting the formation of an effective solid electrolyte interphase (SEI) at the anode. In this study combined simultaneous electrochemical impedance spectroscopy (EIS) and <i>operando</i> electrochemical quartz crystal microbalance with dissipation monitoring (EQCM-D) are employed together with <i>in situ</i> gas analysis (OEMS) to study the influence of VC and FEC on the passivation process and the interphase properties at carbon-based anodes. In small quantities both additives reduce the initial interphase mass loading by 30 to 50 %, but only VC also effectively prevents continuous side reactions and improves anode passivation significantly. VC and FEC are both reduced at potentials above 1 V vs. Li<sup>+</sup>/Li in the first cycle and change the SEI composition which causes an increase of the SEI shear storage modulus by over one order of magnitude in both cases. As a consequence, the ion diffusion coefficient and conductivity in the interphase is also significantly affected. While small quantities of VC in the initial electrolyte increase the SEI conductivity, FEC decomposition products hinder charge transport through the SEI and thus increase overall anode impedance significantly. </div>

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