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Temporary pacing

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https://www.readbyqxmd.com/read/28213055/electrophysiological-measurements-that-can-explain-and-guide-temporary-accelerated-pacing-to-avert-re-occurrence-of-torsade-de-pointes-arrhythmias-in-the-canine-chronic-atrioventricular-block-model
#1
Sofieke C Wijers, Alexandre Bossu, Albert Dunnink, Jet D M Beekman, Rosanne Varkevisser, Alfonso Aranda Hernández, Mathias Meine, Marc A Vos
BACKGROUND: Pacing at higher rates is known to suppress torsade de pointes (TdP) arrhythmias. Nevertheless, exact application and mechanism need further clarification. In the anesthetized canine chronic atrioventricular block model, ventricular remodeling is responsible for a high and reproducible incidence of TdP upon a challenge with dofetilide. OBJECTIVE: We used this model to investigate by what mechanism accelerated pacing averts TdP and what repolarization parameter could be used to guide temporary accelerated pacing (TAP)...
February 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28131641/retrospective-comparative-analysis-of-cardiovascular-implantable-electronic-device-infections-with-and-without-the-use-of-antibacterial-envelopes
#2
COMPARATIVE STUDY
A Hassoun, E D Thottacherry, M Raja, M Scully, A Azarbal
BACKGROUND: Cardiovascular implantable electronic device (CIED) infections are associated with morbidity and mortality. Peri-operative systemic intravenous antibiotic prophylaxis reduces the rate of CIED infections. AIGISRx, a polymer envelope implanted with the CIED, releases minocycline and rifampin, and has been introduced to reduce infections. METHODS: Retrospective review of 184 patients who underwent CIED implantation was conducted. Ninety-two patients were implanted with an AIGISRx envelope (AIGISRx group) and 92 patients were not implanted with an AIGISRx envelope (control group)...
March 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28088306/ventricular-fibrillation-occurring-after-atrioventricular-node-ablation-despite-minimal-difference-between-pre-and-post-ablation-heart-rates
#3
F Squara, G Theodore, D Scarlatti, E Ferrari
We report the case of an 82-year-old man presenting with ventricular fibrillation (VF) occurring acutely after atrioventricular node (AVN) ablation. This patient had severe valvular cardiomyopathy, chronic atrial fibrillation (AF), and underwent prior to the AVN ablation a biventricular implantable cardiac defibrillator positioning. The VF was successfully cardioverted with one external electrical shock. What makes this presentation original is that the pre-ablation spontaneous heart rate in AF was slow (84 bpm), and that VF occurred after ablation despite a minimal heart rate drop of only 14 bpm...
February 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28007085/deciphering-the-black-box-of-food-allergy-mechanisms
#4
REVIEW
Vanitha Sampath, Dana Tupa, Michelle Toft Graham, Talal A Chatila, Jonathan M Spergel, Kari C Nadeau
OBJECTIVE: To review our current understanding of immunotherapy, the immune mechanisms underlying food allergy, and the methodological advances that are furthering our understanding of the role of immune cells and other molecules in mediating food allergies. DATA SOURCES: Literature searches were performed using the following combination of terms: allergy, immunotherapy, food, and mechanisms. Data from randomized clinical studies using state-of-the-art mechanistic tools were prioritized...
January 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/27989870/time-course-of-electrical-remodeling-of-native-conduction-after-cardiac-resynchronization-therapy-and-its-impact-on-clinical-outcome
#5
Marta Cvijić, David Žižek, Bor Antolič, Igor Zupan
BACKGROUND: Cardiac resynchronization therapy (CRT) induces structural and electrical remodeling (ER) in heart failure (HF) patients. Our aim was to assess time course of ER of native conduction and mechanical remodeling after CRT and impact of CRT-induced ER on clinical outcome. METHODS AND RESULTS: We prospectively included 62 patients (aged 66 ± 10 years). Echocardiographic and ECG parameters were measured at baseline and 1, 3, 6, 9, and 12 months after implantation...
March 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/27970231/tct-840-first-in-human-experience-with-a-novel-active-fixation-temporary-pacing-lead-safety-and-efficacy-of-the-tempo-lead
#6
Mark Webster, Sanjeevan Pasupati, Nigel Lever, Martin Stiles
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27941748/congenital-complete-heart-block-presenting-in-pregnancy-a-case-report
#7
S Rouf, A W Chowdhury
Congenital complete heart block presenting for the first time in pregnancy is a rare occurrence posing a therapeutic challenge. We present a case of unpaced preexisting congenital complete heart block in pregnancy diagnosed for the first time during routine prenatal care at her early weeks of gestation. Our patient was asymptomatic and haemodynamically stable and was managed conservatively with a multidisciplinary term approach. Intrauterine growth retardation (IUGR) was present and she was delivered by ceasarean section at term for foetal distress with IUGR...
October 2016: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/27891405/complete-heart-block-in-pregnancy-a-report-of-emergency-caesarean-section-in-a-parturient-without-pacemaker
#8
Vandana Mohapatra, Aparajita Panda, Satyanarayan Behera, Jagadish Chandra Behera
Management of women with Complete Heart Block (CHB) presenting without pacing, during pregnancy and labour is debatable. Temporary pacemakers have been routinely inserted for labour and birth probably to withstand any haemodynamic variations. However, due to lack of large scale prospective studies, the necessity of this procedure has not been objectively assessed. Also, the most appropriate anaesthetic technique for caesarean section in women with CHB is yet to be clarified. We report herein the case of a pregnant woman with CHB who had uneventful emergency caesarean delivery under spinal anaesthesia without temporary pacing...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27886096/service-demand-discovery-mechanism-for-mobile-social-networks
#9
Dapeng Wu, Junjie Yan, Honggang Wang, Ruyan Wang
In the last few years, the service demand for wireless data over mobile networks has continually been soaring at a rapid pace. Thereinto, in Mobile Social Networks (MSNs), users can discover adjacent users for establishing temporary local connection and thus sharing already downloaded contents with each other to offload the service demand. Due to the partitioned topology, intermittent connection and social feature in such a network, the service demand discovery is challenging. In particular, the service demand discovery is exploited to identify the best relay user through the service registration, service selection and service activation...
November 23, 2016: Sensors
https://www.readbyqxmd.com/read/27885444/emergency-pacing-via-the-umbilical-vein-and-subsequent-permanent-pacemaker-implantation-in-a-neonate
#10
Xiao-Mei Li, Dong-Ya Zhang, Hong-Yin Li, Jun-Yi Wang, He Jiang, Guang-Zhi Jia, Hui Wu, Hai-Yan Ge
A dying neonate with congenital complete atrioventricular block underwent an emergency temporary pacing via the umbilical vein 1 h after birth. Implantation of a permanent epicardial pacemaker system was performed at the age of 10 days. During the follow-up period of 3 months, the child had been growing well with the VVIR pacemaker.
January 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/27806730/comparative-physiological-plasticity-to-desiccation-in-distinct-populations-of-the-malarial-mosquito-anopheles-coluzzii
#11
K Hidalgo, D Siaussat, V Braman, K R Dabiré, F Simard, K Mouline, D Renault
BACKGROUND: In West Africa, populations of the malaria vector mosquito, Anopheles coluzzii, are seasonally exposed to strong desiccating conditions during the dry season. Their dynamics strictly follows the pace of the availability of suitable larval development sites (water collections). Accordingly, mosquitoes can reproduce all year long where permanent breeding is possible, or stop reproduction and virtually disappear at the onset of the dry season when surface water dries up, like observed in temporary habitats of dry savannah areas...
November 2, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27797880/ventricular-fibrillation-via-torsade-des-pointes-of-cardiac-sarcoidosis-with-preserved-left-ventricular-ejection-fraction
#12
Takayuki Sekihara, Eisaku Nakane, Kazutaka Nakasone, Moriaki Inoko
Generally, low left ventricular ejection fraction (LVEF) is a risk for ventricular arrhythmia in patients with cardiac sarcoidosis. We present a case of cardiac sarcoidosis with preserved LVEF that evoked ventricular fibrillation (VF). A 73-year-old woman with VF presented to our emergency department. She had a history of ocular sarcoidosis, with gradual thinning of the basal intraventricular septum. LVEF was 62% on the most recent echocardiography. The electrocardiogram after defibrillation showed complete atrioventricular block (CAVB) with QT segment prolongation and frequent ventricular premature beats...
October 25, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27771362/transcriptional-control-of-chondrocyte-specification-and-differentiation
#13
REVIEW
Chia-Feng Liu, William E Samsa, Guang Zhou, Véronique Lefebvre
A milestone in the evolutionary emergence of vertebrates was the invention of cartilage, a tissue that has key roles in modeling, protecting and complementing the bony skeleton. Cartilage is elaborated and maintained by chondrocytes. These cells derive from multipotent skeletal progenitors and they perform highly specialized functions as they proceed through sequential lineage commitment and differentiation steps. They form cartilage primordia, the primary skeleton of the embryo. They then transform these primordia either into cartilage growth plates, temporary drivers of skeletal elongation and endochondral ossification, or into permanent tissues, namely articular cartilage...
February 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/27726292/rapid-pacing-using-the-0-035-in-retrograde-left-ventricular-support-wire-in-208-cases-of-transcatheter-aortic-valve-implantation-and-balloon-aortic-valvuloplasty
#14
Roland Hilling-Smith, James Cockburn, Maureen Dooley, Jessica Parker, Andrea Newton, Andrew Hill, Uday Trivedi, Adam de Belder, David Hildick-Smith
Transcatheter aortic valve implantation (TAVI) and balloon aortic valvuloplasty (BAV) are now well established percutaneous procedures. These procedures almost always require bursts of rapid ventricular pacing to temporarily reduce cardiac output to facilitate the procedure, usually done via a temporary pacing wire inserted into the right ventricle. We describe a case series of 132 cases of TAVI and 76 BAV done using ventricular pacing via the left ventricular lead by simply connecting one electrode to the patient's skin and one electrode through the left ventricular (LV) wire...
October 11, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27717952/reversible-complete-atrioventricular-block-in-patient-with-wegener-s-granulomatosis-a-report-on-fortunate-outcome-with-long-term-follow-up
#15
Roman Steckiewicz, Marek Rosiak, Przemysław Stolarz, Elżbieta B Świętoń, Marcin Grabowski, Dariusz A Kosior
Reversible complete atrioventricular block in patient with Wegener's granulomatosis - a report on a positive outcome with long term follow-up. Atrioventricular (AV) block is a rare complication of Wegener's granulomatosis (WG), thus there are no standards of management in such cases. We present a case of a patient with a dual-chamber pacemaker (DDD) implanted due to complete AV block in the course of Wegener's granulomatosis (WG). An immunosuppressive therapy resulted in the resolution of non-cardiac and AV conduction disorders...
2016: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27716700/the-formation-of-bronchocutaneous-fistulae-due-to-retained-epicardial-pacing-wires-a-literature-review
#16
REVIEW
Vasileios Patris, Michalis Argiriou, Agni-Leila Salem, Konstantinos Giakoumidakis, Nikolaos G Baikoussis, Christos Charitos
Temporary epicardial pacing wires during open-heart surgery are routinely used both for diagnostic and treatment purposes. In complicated cases where patients are unstable or the wires are difficult to remove, the pacing wires are cut at the skin level and allowed to retract by themselves. This procedure rarely causes complications. However, there have been cases reporting that retained pacing wires are linked to the formation of sterno-bronchial fistulae, which may present a while after the date of operation and are usually infected...
October 2016: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/27660584/postinduction-paced-pulseless-electrical-activity-in-a-patient-with-a-history-of-oropharyngeal-instrumentation-induced-reflex-circulatory-collapse
#17
Ryan J Kline, Ky Pham, Carmen L Labrie-Brown, Ken Mancuso, Paul LeLorier, James Riopelle, Alan David Kaye
BACKGROUND: Reflex hypotension and bradycardia have been reported to occur following administration of several drugs associated with administration of anesthesia and also following a variety of procedural stimuli. CASE REPORT: A 54-year-old postmenopausal female with a history of asystole associated with sedated upper gastrointestinal endoscopy and post-anesthetic-induction tracheal intubation received advanced cardiac resuscitation after insertion of a temporary transvenous pacemaker failed to prevent pulseless electrical activity...
2016: Ochsner Journal
https://www.readbyqxmd.com/read/27644061/pausing-with-the-gauze-inhibition-of-temporary-pacemakers-by-radiofrequency-scan-during-cardiac-surgery
#18
Matthew R Williams, Douglas B Atkinson, Vassilios J Bezzerides, Yuki Koichi, Kathryn Franklin, Alfonso Casta, Mark E Alexander
BACKGROUND: Radiofrequency identification (RFID) detection systems are used to detect retained surgical sponges and may cause electromagnetic interference (EMI), altering intended function of cardiac pacing systems. Three pediatric patients requiring temporary pacing for postoperative atrioventricular block experienced transient inhibition of ventricular pacing during the use of RFID detection system. Bench testing was performed to evaluate the mechanism of pacemaker inhibition. METHODS: Impedance of temporary pacing wires was obtained using a pacing system analyzer...
September 16, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27588151/arrhythmia-management-after-device-removal
#19
REVIEW
Nobuhiro Nishii
Arrhythmic management is needed after removal of cardiac implantable electronic devices (CIEDs). Patients completely dependent on CIEDs need temporary device back-up until new CIEDs are implanted. Various methods are available for device back-up, and the appropriate management varies among patients. The duration from CIED removal to implantation of a new CIED also differs among patients. Temporary pacing is needed for patients with bradycardia, a wearable cardioverter defibrillator (WCD) or catheter ablation is needed for patients with tachyarrhythmia, and sequential pacing is needed for patients dependent on cardiac resynchronization therapy...
August 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27575493/stressors-affecting-nurses-in-china
#20
Zeyu Qin, Xin Zhong, Jiahui Ma, Hongjing Lin
OBJECTIVES: To investigate the effect of stress involved in nursing on the physical and mental health of nurses and reduce their efficiency. DESIGN: A cross-sectional descriptive survey. METHOD: The present study was conducted to investigate job stress among nurses (N = 394) in three hospitals in China. Data were collected via a socio-demographic questionnaire and a nursing stress scale. RESULTS: We found that the dimension "Nursing profession and work issues" was the strongest stress factor affecting the nurses, and that the item "shift work" yielded the highest stress score...
August 2016: Contemporary Nurse
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