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Aurelie Thomas, Amy Miller, Johnny Roughan, Aneesa Malik, Katherine Haylor, Charlotte Sandersen, Paul Flecknell, Matthew Leach
Concerns over interactions between analgesics and experimental outcomes are a major reason for withholding opioids from rats undergoing surgical procedures. Only a fraction of morphine injected intravenously reaches receptors responsible for analgesia in the central nervous system. Intrathecal administration of morphine may represent a way to provide rats with analgesia while minimizing the amount of morphine injected. This study aimed to assess whether morphine injected intrathecally via direct lumbar puncture provides sufficient analgesia to rats exposed to acute surgical pain (caudal laparotomy)...
2016: PloS One
Shigeyuki Okahara, Zu Soh, Satoshi Miyamoto, Hidenobu Takahashi, Hideshi Itoh, Shinya Takahashi, Taijiro Sueda, Toshio Tsuji
During cardiopulmonary bypass (CPB), blood viscosity conspicuously increases and decreases due to changes in hematocrit and blood temperature. Nevertheless, blood viscosity is typically not evaluated, because there is no technology that can provide simple, continuous, noncontact monitoring. We modeled the pressure-flow characteristics of an oxygenator in a previous study, and in that study we quantified the influence of viscosity on oxygenator function. The pressure-flow monitoring information in the oxygenator is derived from our model and enables the estimation of viscosity...
October 26, 2016: Artificial Organs
Jack H Crawford, Matthew S Hull, Santiago Borasino, Brad L Steenwyk, Kristal M Hock, Kevin Wall, Jeffrey A Alten
BACKGROUND: Cardiopulmonary bypass (CPB) may lead to adrenal insufficiency (AI). Emerging evidence supports association of AI with morbidity after cardiac surgery. AIMS: The aim of this study was to define AI incidence in neonates undergoing complex cardiac surgery with CPB and its association with intraoperative post-CPB outcomes. METHODS: Forty subjects enrolled in a prior randomized control trial who received preoperative methylprednisolone as part of our institutional neonatal bypass protocol were included...
October 25, 2016: Paediatric Anaesthesia
Fadime Nuhoglu, Funda Gumus, S Nadir Sinikoglu, Abdulkadir Yektas, Kerem Erkalp, Aysin Alagol
PURPOSE: The aim of the present study was to investigate the changes in intraocular pressures (IOP) in patients who underwent pulsatile and non-pulsatile cardiopulmonary bypass (CPB). METHODS: A total of 42 patients operated for elective coronary bypass surgery (CABG) on CPB were randomly allocated to pulsatile (Group P) and non-pulsatile (Group N) groups. Pulsatile flow was applied to Group P patients during crops-clamp period. The IOP measurements were made before and after the induction of anesthesia, before the onset of CPB, on the 5th, 15th, 30th, 45th, and 60th min of CPB, after CPB and at the end of the operation...
October 24, 2016: International Ophthalmology
Bilal H Kirmani, Michael V Holmes, Andrew D Muir
BACKGROUND: The long-term outcomes of off-pump coronary artery bypass grafting (CABG) are the subject of speculation. Our institution has >15 years of experience performing CABG both off-pump (OPCAB) and on cardiopulmonary bypass (CPB). Our null hypothesis was that there would be no difference in a long-term composite of death and revascularisation between the 2 methods. METHODS: We performed a retrospective cohort study of all isolated CABG at our institution from 2001 to 2015...
October 25, 2016: Circulation
Suresh V Joshi, Abhijeet V Naik, Parag S Bhalgat, Bhushan Chavan, Prasanna Salvi
BACKGROUND: Anomalous origin of left coronary artery from pulmonary artery is a very rare disease with incidence of one every 300,000 live births. It has a high mortality of 80% in the first year of life. This observational study summarized our experience using the technique of subclavian arterial bypass without the use of cardiopulmonary bypass (CPB) for treatment of this coronary anomaly in pediatric population. The study aims to revive an earlier technique, with modifications, as an alternative to the existing coronary translocation...
September 2016: Indian Heart Journal
Aijaz Ahmed Babar, Mazhar Hussain Peerzada, Abdul Khalique Jhatial, Noor-Ul-Ain Bughio
Conventionally, cellulosic fabric dyed with reactive dyes requires significant amount of salt. However, the dyeing of a solvent spun regenerated cellulosic fiber is a critical process. This paper presents the dyeing results of lyocell fabrics dyed with conventional pad batch (CPB) and pad ultrasonic batch (PUB) processes. The dyeing of lyocell fabrics was carried out with two commercial dyes namely Drimarine Blue CL-BR and Ramazol Blue RGB. Dyeing parameters including concentration of sodium hydroxide, sodium carbonate and dwell time were compared for the two processes...
January 2017: Ultrasonics Sonochemistry
Chiaki Yoshikawa, Jun Qiu, Yoshihisa Shimizu, Chih-Feng Huang, Onko-Jan Gelling, Edith van den Bosch
Biofouling, an undesired adsorption of biological material to otherwise inert surfaces, is detrimental in medical, pharmaceutical, and other sectors. Concentrated polymer brushes (CPB) confer non-biofouling properties on modified surfaces but are cumbersome to fabricate. Here, a simple and versatile method of fabricating non-biofouling coatings for various substrates was developed using CPB-modified silica nanoparticles (SiPs). Concentrated poly(poly(ethylene glycol) methyl ether methacrylate) (PPEGMA) brushes were grafted on SiPs by surface-initiated atom transfer radical polymerization...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Sarah-Jayne Edmondson, Saina Attaran, Ulrich P Rosendahl
Wegner's granulomatosis (WG) is an autoimmune systemic vasculitis that results in necrotizing granulomas. We report a WG patient with a lung granuloma and aortic root dilatation, who underwent aortic root replacement on cardiopulmonary bypass (CPB). Intraoperatively, the patient suffered an aortic dissection, which was repaired immediately under deep hypothermic circulatory arrest (DHCA). Follow-up imaging showed complete granuloma resolution, despite absence of immunosuppressive therapy. Immune stimulation following CPB is well described; here, the opposite was observed and DHCA effects are discussed...
February 2016: Aorta (Stamford, Conn.)
Julie L Huffmyer, Lucas G Fernandez, Cyrus Haghighian, Abdullah S Terkawi, Danja S Groves
BACKGROUND: The Quantra Hemostasis Analyzer is a novel diagnostic device that uses an ultrasound-based technology, sonic estimation of elasticity via resonance (SEER) sonorheometry, to characterize the dynamic changes in viscoelastic properties of a blood sample during coagulation. Cardiac surgery utilizing cardiopulmonary bypass (CPB) is associated with a significant impact on the coagulation system and can result in perioperative coagulopathy. The aim of this study was to correlate SEER sonorheometry results to corresponding rotational thromboelastometry (ROTEM) and laboratory parameters obtained before, during, and after CPB...
October 4, 2016: Anesthesia and Analgesia
Xiaoqi Zhao, Tianxiang Gu, Zongyi Xiu, Enyi Shi, Lei Yu
Objective: To summarize the effect of mild hypothermia on function of the organs in patients with multiple organ dysfunction syndrome after cardiopulmonary bypass surgery. Methods: The patients were randomly divided into two groups, northermia group (n=71) and hypothermia group (n=89). We immediately began cooling the hypothermia group when test results showed multiple organ dysfunction syndrome, meanwhile all patients of two groups were drawn blood to test blood gas, liver and kidney function, blood coagulation function, and evaluated the cardiac function using echocardiography from 12 to 36 hours...
May 2016: Brazilian Journal of Cardiovascular Surgery
Utpal S Bhalala, Elumalai Appachi, Muhammad Ali Mumtaz
Many known risk factors for adverse cardiovascular and neurological outcomes in children with congenital heart defects (CHD) are not modifiable; however, the temperature and blood flow during cardiopulmonary bypass (CPB), are two risk factors, which may be altered in an attempt to improve long-term neurological outcomes. Deep hypothermic circulatory arrest, traditionally used for aortic arch repair, has been associated with short-term and long-term neurologic sequelae. Therefore, there is a rising interest in using moderate hypothermia with selective antegrade cerebral blood flow on CPB during aortic arch repair...
2016: Frontiers in Pediatrics
Sathappan Karuppiah, Christopher Mckee, Ashley Hodge, Mark Galantowicz, Joseph Tobias, Aymen Naguib
Over the years, there has been a growing recognition of the potential negative sequelae of allogeneic blood products on postoperative outcomes following cardiac surgery. In addition, followers of the Jehovah's Witness (JW) faith have a religious restriction against receiving blood or blood components. Advances in perioperative care, cardiopulmonary bypass (CPB), and surgical technique have minimized the need for allogeneic blood products. Specific blood conservation strategies include maximizing the preoperative hematocrit and coagulation function as well as intraoperative strategies, such as acute normovolemic hemodilution and adjustments of the technique of CPB...
September 2016: Journal of Extra-corporeal Technology
Thijs C D Rettig, Linda M Peelen, Guillaume S C Geuzebroek, Wilton A van Klei, Christa Boer, Jan Willem van der Veer, Jan Hofland, Ewoudt M W van de Garde, Peter G Noordzij
OBJECTIVE: The aim of this study was to investigate whether acute kidney injury (AKI) after coronary artery bypass grafting can be attributed to intraoperative hypotension during cardiopulmonary bypass (IOH-CPB). DESIGN: Retrospective analysis. SETTING: Tertiary-care hospital. PARTICIPANTS: Patients undergoing on-pump coronary artery bypass grafting from June 2011 to January 2014. INTERVENTIONS: None...
July 30, 2016: Journal of Cardiothoracic and Vascular Anesthesia
Eun Seok Choi, Sungkyu Cho, Woo Sung Jang, Woong-Han Kim
BACKGROUND AND OBJECTIVES: A blood transfusion is almost inevitable in neonatal cardiac surgery. This study aimed to assess the feasibility of using autologous cord blood for a cardiopulmonary bypass (CPB) priming as an alternative to an allo-transfusion in neonatal cardiac surgery. SUBJECTS AND METHODS: From January 2012 to December 2014, cord blood had been collected during delivery after informed consent and was stored immediately into a blood bank. Eight neonatal patients had their own cord blood used for CPB priming during cardiac surgery...
September 2016: Korean Circulation Journal
Mineto Kamata, Corey Stiver, Aymen Naguib, Dmitry Tumin, Joseph D Tobias
OBJECTIVES: The objectives of this study were to evaluate the effect of ventricular morphology on perioperative outcomes during Fontan surgery. DESIGN: Retrospective cohort study. SETTING: Single standing, not-for-profit pediatric hospital. PARTICIPANTS: A total of 72 patients who underwent Fontan surgery using cardiopulmonary bypass without aortic cross-clamp between January 1, 2009 and December 31, 2014. INTERVENTIONS: None...
July 19, 2016: Journal of Cardiothoracic and Vascular Anesthesia
Rakesh Naik, Gladdy George, Sathappan Karuppiah, Madhu Andrew Philip
OBJECTIVES OF THE STUDY: To identify the factors causing high lactate levels in patients undergoing cardiac surgery under cardiopulmonary bypass (CPB) and to assess the association between high blood lactate levels and postoperative morbidity and mortality. METHODS: A retrospective observational study including 370 patients who underwent cardiac surgeries under cardiopulmonary bypass. The patients were divided into 2 groups based on serum lactate levels; those with serum lactate levels greater than or equal to 4 mmol/L considered as hyperlactatemia and those with serum lactate levels less than 4 mmol/L...
October 2016: Annals of Cardiac Anaesthesia
Nagat S El-Shmaa, Doaa El Amrousy, Wael El Feky
OBJECTIVE: The objective of this study was to assess the effectiveness of pre-emptive dexmedetomidine versus amiodarone in preventing junctional ectopic tachycardia (JET) in pediatric cardiac surgery. DESIGN: This is a prospective, controlled study. SETTING: This study was carried out at a single university hospital. SUBJECTS AND METHODS: Ninety patients of both sexes, American Society of Anesthesiologists Physical Status II and III, age range from 2 to 18 years, and scheduled for elective cardiac surgery for congenital and acquired heart diseases were selected as the study participants...
October 2016: Annals of Cardiac Anaesthesia
Bhawna Gupta, Ali Dodge-Khatami, Juan Tucker, Mary B Taylor, Douglas Maposa, Miguel Urencio, Jorge D Salazar
BACKGROUND: Antegrade cerebral perfusion (ACP) typically is used with deep hypothermia for cerebral protection during aortic arch reconstructions. The impact of ACP on cerebral oxygenation and serum creatinine at a more tepid 25 °C was studied in newborns and children. METHODS: Between 2010 and 2014, 61 newborns and children (<5 years old) underwent aortic arch reconstruction using moderate hypothermia (25.0±0.9 °C) with ACP and a pH-stat blood gas management strategy...
July 2016: Translational pediatrics
Craig M McRobb, Richard J Ing, D Scott Lawson, James Jaggers, Mark Twite
Modified ultrafiltration (MUF) is a technique which is commonly used immediately post-cardiopulmonary bypass (CPB) for open heart surgery in children. There are many advantages of MUF, but there are also a number of less reported disadvantages. At our institution, after considering all of the available data, a decision was made to no longer perform MUF. The primary motivation being the simplified and miniaturized CPB circuit would reduce hemodilution, decrease our likelihood of reaching our transfusion trigger during CPB and, potentially, improve safety...
October 5, 2016: Perfusion
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