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https://www.readbyqxmd.com/read/29035429/where-is-the-optimal-fontan-hemodynamics
#1
REVIEW
Hideo Ohuchi
Fontan circulation is generally characterized by high central venous pressure, low cardiac output, and slightly low arterial oxygen saturation, and it is quite different from normal biventricular physiology. Therefore, when a patient with congenital heart disease is selected as a candidate for this type of circulation, the ultimate goals of therapy consist of 2 components. One is a smooth adjustment to the new circulation, and the other is long-term circulatory stabilization after adjustment. When either of these goals is not achieved, the patient is categorized as having "failed" Fontan circulation, and the prognosis is dismal...
September 18, 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/29034637/-development-identification-and-application-of-33-monoclonal-antibodies-against-cardiac-troponin-t
#2
Yuehong Hu, Zimin Chen, Yuxiang Chen, Yinghui Yang, Shuying Wei, Liuwei Song, Guoliang Zhou, Shengxiang Ge
The aim of this study is to prepare and characterize cardiac troponin T (cTnT) monoclonal antibodies (mAb), and further develop a chemiluminescence quantitative detection assay for cTnT. BALB/c mice were immunized with recombinant cTnT antigen, and specific mAbs were prepared using conventional hybridoma technique and screened by indirect ELISA method. To identify the epitopes, several cTnT peptide fragments were synthesized or expressed by genetic engineering. A double antibody sandwich ELISA method was used to screen the mAb pairs for cTnT detection, and the automatic chemiluminescence detection assay for cTnT was developed...
December 25, 2016: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
https://www.readbyqxmd.com/read/29034449/nitrous-oxide-based-vs-nitrous-oxide-free-general-anaesthesia-and-accidental-awareness-in-surgical-patients-an-abridged-cochrane-systematic-review
#3
REVIEW
J Hounsome, J Greenhalgh, O J Schofield-Robinson, S R Lewis, T M Cook, A F Smith
Accidental awareness during general anaesthesia can arise from a failure to deliver sufficient anaesthetic agent, or from a patient's resistance to an expected sufficient dose of such an agent. Awareness is 'explicit' if the patient is subsequently able to recall the event. We conducted a systematic review into the effect of nitrous oxide used as part of a general anaesthetic on the risk of accidental awareness in people over the age of five years undergoing general anaesthesia for surgery. We included 15 randomised controlled trials, 14 of which, representing a total of 3439 participants, were included in our primary analysis of the frequency of accidental awareness events...
October 16, 2017: Anaesthesia
https://www.readbyqxmd.com/read/29034247/regular-exposure-to-cowbells-affects-the-behavioral-reactivity-to-a-noise-stimulus-in-dairy-cows
#4
Julia Johns, Sophie Masneuf, Antonia Patt, Edna Hillmann
In alpine regions, cows are often equipped with bells during pasture season to ensure that farmers can locate them. Constant exposure to the chime of a bell may affect cows' acoustic perception in general. The aim of this study is to test whether routine bell exposure affects the reactivity to a noise stimulus and might be associated with hearing impairment in cows. For the assessment, behavioral and cardiac indicators were used as indirect measures of hearing capacity. Cows that were either used to wearing a bell or not were exposed to a playback of low and high amplitude (=varying loudness)...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29033898/functional-characterization-of-paralogous-gonadotropin-releasing-hormone-type-and-corazonin-type-neuropeptides-in-an-echinoderm
#5
Shi Tian, Michaela Egertová, Maurice R Elphick
Homologs of the vertebrate neuropeptide gonadotropin-releasing hormone (GnRH) have been identified in invertebrates, including the insect neuropeptide corazonin (CRZ). Recently, we reported the discovery of GnRH-type and CRZ-type signaling systems in an echinoderm, the starfish Asterias rubens, demonstrating that the evolutionary origin of paralogous GnRH-type and CRZ-type neuropeptides can be traced back to the common ancestor of protostomes and deuterostomes. Here, we have investigated the physiological roles of the GnRH-type (ArGnRH) and the CRZ-type (ArCRZ) neuropeptides in A...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29033272/graduating-surgical-residents-lack-competence-in-critical-care-ultrasound
#6
Renuka Tripu, Margaret H Lauerman, Daniel Haase, Syeda Fatima, Jacob Glaser, Cassandra Cardarelli, Thomas M Scalea, Sarah Murthi
OBJECTIVE: Ultrasound provides accessible imaging for bedside diagnostics and procedural guidance, but may lead to misdiagnosis in untrained users. The main objective of this study was to determine observed and self-perceived competence with critical care ultrasound in graduated general surgery residents. DESIGN: The design of this study was a retrospective review. Ultrasound training program records were reviewed for number of prior ultrasound examinations performed, self-perceived competence, observed competence on faculty examinations, and intended future use of individual critical care ultrasound examinations...
October 13, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/29032483/regulation-of-cardiac-voltage-gated-sodium-channel-by-kinases-roles-of-protein-kinases-a-and-c
#7
Ademuyiwa S Aromolaran, Mohamed Chahine, Mohamed Boutjdir
In the heart, voltage-gated sodium (Nav) channel (Nav1.5) is defined by its pore-forming α-subunit and its auxiliary β-subunits, both of which are important for its critical contribution to the initiation and maintenance of the cardiac action potential (AP) that underlie normal heart rhythm. The physiological relevance of Nav1.5 is further marked by the fact that inherited or congenital mutations in Nav1.5 channel gene SCN5A lead to altered functional expression (including expression, trafficking, and current density), and are generally manifested in the form of distinct cardiac arrhythmic events, epilepsy, neuropathic pain, migraine, and neuromuscular disorders...
October 15, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/29029776/accelerated-idioventricular-rhythm-requiring-catheter-ablation-in-a-child-the-dark-side-of-a-benign-arrhythmia
#8
A Errahmouni, S-S Bun, D G Latcu, A Tazi-Mezalek, N Saoudi
A 12 year-old boy, with no history of cardiac disease, was referred to our department for evaluation of an incessant accelerated idioventricular rhythm (AIVR) complicated with severe left ventricular (LV) dysfunction and cardiogenic shock. Extensive diagnostic work-up failed to reveal any structural heart disease. During electrophysiological study, AIVR originated from the right ventricular endocardial anterior wall and was successfully ablated using remote magnetic navigation. LV function showed complete recovery four weeks after the procedure...
October 10, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29029074/multimodality-imaging-evaluation-of-chagas-disease-an-expert-consensus-of-brazilian-cardiovascular-imaging-department-dic-and-the-european-association-of-cardiovascular-imaging-eacvi
#9
Maria Carmo P Nunes, Luigi Paolo Badano, J Antonio Marin-Neto, Thor Edvardsen, Covadonga Fernández-Golfín, Chiara Bucciarelli-Ducci, Bogdan A Popescu, Richard Underwood, Gilbert Habib, Jose Luis Zamorano, Roberto Magalhães Saraiva, Ester Cerdeira Sabino, Fernando A Botoni, Márcia Melo Barbosa, Marcio Vinicius L Barros, Eduardo Falqueto, Marcus Vinicius Simões, André Schmidt, Carlos Eduardo Rochitte, Manoel Otávio Costa Rocha, Antonio Luiz Pinho Ribeiro, Patrizio Lancellotti
Aims: To develop a document by Brazilian Cardiovascular Imaging Department (DIC) and the European Association of Cardiovascular Imaging (EACVI) to review and summarize the most recent evidences about the non-invasive assessment of patients with Chagas disease, with the intent to set up a framework for standardized cardiovascular imaging to assess cardiovascular morphologic and functional disturbances, as well as to guide the subsequent process of clinical decision-making. Methods and results: Chagas disease remains one of the most prevalent infectious diseases in Latin America, and has become a health problem in non-endemic countries...
September 25, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29029035/long-term-survival-and-causes-of-death-in-patients-with-st-elevation-acute-coronary-syndrome-without-obstructive-coronary-artery-disease
#10
Hedvig Bille Andersson, Frants Pedersen, Thomas Engstrøm, Steffen Helqvist, Morten Kvistholm Jensen, Erik Jørgensen, Henning Kelbæk, Sune Bernd Emil Werner Räder, Kari Saunamäki, Eric Bates, Peer Grande, Lene Holmvang, Peter Clemmensen
Aims: We aimed to study survival and causes of death in patients with ST-elevation acute coronary syndrome (STE-ACS) with and without obstructive coronary artery disease (CAD). Methods and results: We included 4793 consecutive patients with STE-ACS triaged for acute coronary angiography at a large cardiac invasive centre (2009-2014). Of these, 88% had obstructive CAD (stenosis ≥50%), 6% had non-obstructive CAD (stenosis 1-49%), and 5% had normal coronary arteries...
September 23, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29029007/presence-of-micro-and-macroalbuminuria-and-the-association-with-cardiac-mechanics-in-patients-with-type-2-diabetes
#11
Peter Godsk Jørgensen, Tor Biering-Sørensen, Rasmus Mogelvang, Thomas Fritz-Hansen, Tina Vilsbøll, Peter Rossing, Jan Skov Jensen
Aims: Albuminuria-a marker of generalized vascular dysfunction-is a strong predictor of heart failure in patients with type 2 diabetes which may be caused by concomitant myocardial dysfunction reflecting the same underlying pathogenesis. Methods and results: We included 915 patients with type 2 diabetes from two secondary care centres and stratified according to albuminuria status in normo-, micro-, and macroalbuminuria. We performed comprehensive echocardiography including conventional imaging, tissue Doppler imaging, and 2D speckle tracking...
October 3, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29025297/liver-transplantation-in-patients-with-cardiac-disease
#12
Christopher L Wray
Liver transplantation (LT) is a unique surgical procedure that has major hemodynamic and cardiovascular implications. Recently, there has been significant interest focused on cardiovascular issues that affect LT patients in all phases of the perioperative period. The preoperative cardiac evaluation is a major step in the selection of LT candidates. LT candidates are aging in concordance with the general population; cardiovascular disease and their risk factors are highly associated with older age. Underlying cardiovascular disease has the potential to affect outcomes in LT patients and has a major impact on candidate selection...
October 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29023352/novel-sternal-protection-device-for-cardiac-surgery-via-median-sternotomy-incision
#13
Silvana F Marasco, David C McGiffin, Adam D Zimmet, Pablo C Solis, Judy M Bingham, Randall A Moshinsky
OBJECTIVE: Sternal bleeding during cardiac surgery is currently controlled using bone wax or other chemical substances that may result in adverse effects and affect wound healing and recovery. The purpose of this study was to identify a safe, cost-effective, and easy-to-use technique to reduce sternal bleeding and sternal trauma during cardiac surgery. METHODS: After sternotomy, a sternal protection device was placed over each hemisternal section before insertion of the retractor and remained in situ until the end of surgery...
October 10, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29022232/a-case-of-fatal-perimyocarditis-due-to-a-rare-disease
#14
Stefanie Plenzig, Sara Heinbuch, Hannelore Held, Marcel A Verhoff, Constantin Lux
Although myocarditis is caused by viral infections in about 50% of cases in European countries, various other causative agents are known. We report the case of a 51-year-old man who died several months after being diagnosed with asthma by his general practitioner. This diagnosis had been confirmed by a pulmonologist approximately 6 weeks before the man's death. To rule out the possibility of medical malpractice the prosecuting authority ordered a forensic autopsy. At autopsy macroscopic indicators for perimyocarditis and pneumonia were found...
October 11, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/29021850/long-term-survival-of-implantable-cardioverter-defibrillator-recipients-with-end-stage-renal-disease
#15
Mikhael F El-Chami, Lea Matar, Paige Smith, Mary Casey, Maher A Addish, Kimberly Kelly, Carolyn Wood, John Merlino, Abhinav Goyal, Angel R Leon, Faisal M Merchant
BACKGROUND: The efficacy of implantable cardioverter-defibrillators (ICD) for primary prevention of sudden cardiac death (SCD) has not been studied in patients with end-stage renal disease (ESRD) and left ventricular dysfunction. We sought to identify predictors of long-term survival among ICD recipients with and without ESRD. METHODS: Patients implanted with an ICD at our institution from January 2006 to March 2014 were retrospectively identified. Clinical and demographic characteristics were collected...
October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29021849/feasibility-safety-and-potential-demand-of-emergent-brain-magnetic-resonance-imaging-of-patients-with-cardiac-implantable-electronic-devices
#16
Maki Ono, Makoto Suzuki, Mitsuaki Isobe
BACKGROUND: The feasibility, safety, and potential demand of emergent magnetic resonance imaging (MRI) of patients with a cardiac implantable electronic device (CIED) in emergency situations are unknown. METHODS: We retrospectively compared emergent and scheduled MRI orders for patients with CIEDs at Kameda General Hospital, a tertiary hospital in Japan, from October 2012 to September 2016. RESULTS: We identified 11 emergent MRI orders via the emergency room and 38 scheduled MRI orders...
October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29021273/improvement-in-care-and-outcomes-for-emergency-medical-service-transported-patients-with-st-elevation-myocardial-infarction-stemi-with-and-without-prehospital-cardiac-arrest-a-mission-lifeline-stemi-accelerator-study
#17
Kristian Kragholm, Di Lu, Karen Chiswell, Hussein R Al-Khalidi, Mayme L Roettig, Matthew Roe, James Jollis, Christopher B Granger
BACKGROUND: Patients with ST-elevation myocardial infarction (STEMI) with out-of-hospital cardiac arrest (OHCA) may benefit from direct transport to a percutaneous cardiac intervention (PCI) hospital but have previously been less likely to bypass local non-PCI hospitals to go to a PCI center. METHODS AND RESULTS: We reported time trends in emergency medical service transport and care of patients with STEMI with and without OHCA included from 171 PCI-capable hospitals in 16 US regions with participation in the Mission: Lifeline STEMI Accelerator program between July 1, 2012, and March 31, 2014...
October 11, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29021143/cold-agglutinins-in-a-patient-undergoing-normothermic-cardiac-operation-with-warm-cardioplegia
#18
Tatsuhiko Ogawa
Cold agglutinins are autoantibodies that agglutinate red blood cells at low temperatures, leading to haemagglutination and haemolysis. They are generally of no clinical significance. However, when people with cold agglutinins undergo cardiac operation with hypothermia and cold cardioplegia, they can experience complications. Thus, different perioperative management is required for such patients. We describe a 74-year-old man with cold agglutinins incidentally detected on the preoperative screening test. He had never experienced any complications or developed a haematological disease...
October 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29020730/palpitations-when-you-hear-hoof-beats-don-t-forget-to-think-zebras
#19
Ralf E Harskamp, Odile B Thole, Izaäk Moggré
In general practice palpitations are reported in around 8 per 1,000 persons per year. The differential diagnosis includes cardiac and psychiatric causes, as well as numerous others e.g. anaemia, hyperthyroidism, prescribed medication, caffeine and recreational drugs. Factors that point towards a cardiac aetiology are male sex, irregular heartbeat, history of heart disease, event duration > 5 minutes, frequent palpitations, and palpitations which occur at work or disturb sleep. Other clues suggesting a cardiac origin are abrupt onset and termination of palpitations, positional palpitations, and accompanying symptoms such as dizziness and presyncope...
April 2017: Practitioner
https://www.readbyqxmd.com/read/29019905/bezold-jarisch-reflex-occurred-in-a-pediatric-patient-with-giant-intra-abdominal-teratoma-during-induction-of-anesthesia-a-case-report
#20
Kai-Ming Yuan, Shu-Ying Fu, Jun Li, Wang-Ning Shangguan, Qing-Quan Lian
RATIONALE: Bezold-Jarisch reflex (BJR) occurs when the cardioinhibitory receptors in the walls of ventricles are activated by various stimuli, with typical features of bradycardia, vasorelaxation, and hypotension. This reflex usually happens in parturient intrathecal anesthesia, as a result of decreased venous return by compression of inferior vena cava, but it is only rarely reported during general anesthesia. PATIENT CONCERNS: Severe bradycardia and hypotension, indicating BJR, occurred during the induction of general anesthesia in a 3-month-old female child with giant intra-abdominal teratoma...
October 2017: Medicine (Baltimore)
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