Asymptotic Behavior of Loss Rate for Feedback Finite Fluid Queue with Downward Jumps

2009 ◽  
pp. 195-211
Author(s):  
Yutaka Sakuma ◽  
Masakiyo Miyazawa
Keyword(s):  
Asymptotic Behavior ◽  
Loss Rate ◽  
Fluid Queue

Asymptotic behavior of the loss rate for Markov-modulated fluid queue with a finite buffer

2010 ◽  
Vol 65 (1) ◽  
pp. 19-42 ◽  
Author(s):  
Yutaka Sakuma ◽  
Masakiyo Miyazawa
Keyword(s):  
Asymptotic Behavior ◽  
Loss Rate ◽  
Finite Buffer ◽  
Fluid Queue ◽  
Markov Modulated

Review of Flap Monitoring Technology in 2020

2020 ◽  
Vol 36 (06) ◽  
pp. 722-726
Author(s):  
Adam Jacobson ◽  
Oriana Cohen
Keyword(s):  
Head And Neck ◽  
Free Flap ◽  
Loss Rate ◽  
Early Recognition ◽  
Postoperative Patient ◽  
Free Flap Monitoring ◽  
Improved Outcomes ◽  
Vascular Compromise ◽  
Flap Monitoring ◽  
Multiple Levels

AbstractAdvances in free flap reconstruction of complex head and neck defects have allowed for improved outcomes in the management of head and neck cancer. Technical refinements have decreased flap loss rate to less than 4%. However, the potential for flap failure exists at multiple levels, ranging from flap harvest and inset to pedicle lay and postoperative patient and positioning factors. While conventional methods of free flap monitoring (reliant on physical examination) remain the most frequently used, additional adjunctive methods have been developed. Herein we describe the various modalities of both invasive and noninvasive free flap monitoring available to date. Still, further prospective studies are needed to compare the various invasive and noninvasive technologies and to propel innovations to support the early recognition of vascular compromise with the goal of even greater rates of flap salvage.

High-frequency asymptotic behavior of radiation spectra of moving charges in classical electrodynamics

1986 ◽  
Vol 149 (8) ◽  
pp. 709 ◽  
Author(s):  
I.I. Abbasov ◽  
Boris M. Bolotovskii ◽  
Valerii A. Davydov
Keyword(s):  
Asymptotic Behavior ◽  
High Frequency ◽  
Classical Electrodynamics ◽  
Radiation Spectra

Temperature Dependence of Ozone Loss Rate

2013 ◽  
Vol 133 (9) ◽  
pp. 465-470
Author(s):  
Kazuki Omiya ◽  
Ilko Mitkov Rusinov ◽  
Susumu Suzuki ◽  
Haruo Itoh
Keyword(s):  
Temperature Dependence ◽  
Loss Rate ◽  
Ozone Loss

Comparison for Loss Rate of Low Concentration Nitrous Oxide in Tedlar Bag and Aluminium-Polyester Bag

2017 ◽  
Vol 8 (1) ◽  
pp. 31
Author(s):  
Woo Chan Lee ◽  
Sung Bin Park ◽  
Young Hwan Ko ◽  
Seung Min Hyun ◽  
Kyoon Duk Yoon
Keyword(s):  
Nitrous Oxide ◽  
Loss Rate ◽  
Low Concentration

Prevention of massive intraoperative bleedings associated with heparin with the systemic use of fibrin monomer in the experiment

2019 ◽  
pp. 48-55
Author(s):  
А.П. Момот ◽  
В.М. Вдовин ◽  
Д.А. Орехов ◽  
Н.А. Лычёва ◽  
И.Г. Толстокоров ◽  
...  
Keyword(s):  
Liver Injury ◽  
Blood Loss ◽  
Unfractionated Heparin ◽  
Loss Rate ◽  
Antithrombin Iii ◽  
Fibrinogen Level ◽  
Circulating Blood Volume ◽  
Intraoperative Bleeding ◽  
Fibrin Monomer ◽  
Antithrombin Iii Activity

Цель исследования - изучение способности фибрин-мономера предупреждать тяжелую интраоперационную кровопотерю, ассоциированную с введением нефракционированного гепарина, при дозированной травме печени. Методика. На кроликах «Шиншилла» индуцировали гипокоагуляцию нефракционированным гепарином (150 ед/кг). Профилактику интраоперационных кровотечений осуществляли внутривенным введением фибрин-мономера (0,25 мг/кг) за 1 ч до травмы или протамина сульфата (1,5 мг/кг) за 10 мин до травмы. После нанесения стандартной травмы печени оценивали объем (в % ОЦК) и темп (мг/с) кровопотери. Анализировали число тромбоцитов, активированное парциальное тромбопластиновое время, протромбиновое и тромбиновое время свертывания, уровень фибриногена и активность антитромбина III, параметры ротационной тромбоэластометрии крови. Результаты. Объем кровопотери в группах животных после в/в введения фибрин-мономера и протамина сульфата на фоне гепаринизации был, соответственно, в 5,1 и 4,0 раза меньше по сравнению с группой плацебо, получавшей тот же антикоагулянт. Вместе с тем, фибрин-мономер не влиял на параметры коагулограммы (отсутствие видимого гемостазиологического эффекта) и тромбоэластограммы, тогда как применение протамина сульфата в качестве антидота гепарина сопровождалось нормализацией данных тромбоэластометрии и коррекцией гипокоагуляционного сдвига по активированному парциальному тромбопластиновому времени, протромбиновому и тромбиновому времени. Заключение. Установлено, что фибрин-мономер (0,25 мг/кг) снижает посттравматическое кровотечение в условиях блокады свертывания крови гепарином без видимых признаков восстановления гемостатического равновесия. The research objective was to study the ability of fibrin monomer to prevent severe intraoperative blood loss associated with administration of unfractionated heparin in controlled liver injury. Methods. Hypocoagulation was induced in chinchilla rabbits with unfractionated heparin (150 U/kg). Intraoperative bleeding was prevented by administration of fibrin monomer (FM, 0.25 mg/kg, i.v.) one hour prior to the injury and of protamine sulfate (PS, 1.5 mg/kg, i.v.) 10 min prior to the injury. Following the liver injury, blood loss was assessed as percentage of circulating blood volume and the blood loss rate (mg/s). Platelet counts, aPTT, PT, TT, fibrinogen level, antithrombin III activity, and parameters of blood rotation thromboelastometry were analyzed. Results. The volume of blood loss was 5.1 times and 4.0 times less, respectively, after the FM and PS administration during heparinization compared to the placebo group treated with the same anticoagulant. However, FM affected neither coagulogram indexes (no visible hemostasiological effect) nor thromboelastogram while the use of PS as an antidote for heparin was associated with normalization of thromboelastometric data and correction of hypercoagulative changes in aPTT, PT, TT. Conclusion. FM at a dose of 0.25 mg/kg reduced severity of posttraumatic bleeding induced by heparin inhibition of coagulation with no visible signs of hemostatic balance recovery.

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