Read by QxMD icon Read

Phrenic nerve

James P Dunham, Anna C Sales, Anthony E Pickering
OBJECTIVE: Microneurography is the only method for recording from single neurons in intact human nerves. It is challenging - requiring technical expertise, investment in specialised equipment and has sparse data yields. METHODS: We assessed whether ultrasound guidance in combination with an 'open access' amplifier and data capture system (Open-Ephys) would simplify and expand the scope of microneurographic recordings in humans. RESULTS: In 32 healthy consenting volunteers, ultrasound-guidance improved success rates for obtaining cutaneous C-fibres and reduced "Skin to Nerve" times from 28...
July 29, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
Shinsuke Miyazaki, Takatsugu Kajiyama, Masahiro Hada, Hiroaki Nakamura, Hitoshi Hachiya, Hiroshi Tada, Kenzo Hirao, Yoshito Iesaka
BACKGROUND: Few data are available regarding pulmonary vein (PV) stenosis after second-generation cryoballoon PV isolation (CB2-PVI). Currently, a single short freeze strategy is standard for CB2-PVI owing to enhanced cooling effects. This study aimed to evaluate the incidence of PV stenosis after CB2-PVI with the current standard strategy. METHODS: Two hundred seventy-six atrial fibrillation patients underwent CB2-PVI using one 28-mm balloon and single 3-minute freeze strategy...
August 4, 2018: International Journal of Cardiology
Sjoerd W Westra, Stijn P G van Vugt, Sümeyye Sezer, Reinder Evertz, Martin E Hemels, Rypko J Beukema, Carlo de Asmundis, Marc A Brouwer, Gian-Battista Chierchia
PURPOSE: Currently, information on the optimal approach of redo procedures for paroxysmal atrial fibrillation (PAF) is limited. Radiofrequency ablation is the preferred technique, with reported success rates of 50-70% at 1-2 years, whereas only few reports exist on redo cryoballoon (CB) ablations. We describe outcomes on a systematic approach of repeat procedures with a second-generation cryoballoon (CB-2) after a successful index CB ablation. METHODS: Cohort study of 40 consecutive patients with recurrent PAF (55% male), median CHA2 DS2 -VASc score 1 (IQR 0-3)...
August 8, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Ying-Jie Peng, Vladislav V Makarenko, Anna Gridina, Irina Chupikova, Xiuli Zhang, Ganesh K Kumar, Aaron P Fox, Nanduri R Prabhakar
The role of cystathionine-γ-lyase (CSE) derived H2 S in the hypoxic and anoxic responses of the carotid body (CB) were examined. Experiments were performed on Sprague-Dawley rats, wild type and CSE knockout mice on C57BL/6 J background. Hypoxia (pO2  = 37 ± 3 mmHg) increased the CB sensory nerve activity and elevated H2 S levels in rats. In contrast, anoxia (pO2  = 5 ± 4 mmHg) produced only a modest CB sensory excitation with no change in H2 S levels. DL-propargylglycine (DL-PAG), a blocker of CSE, inhibited hypoxia but not anoxia-evoked CB sensory excitation and [Ca2+ ]i elevation of glomus cells...
August 4, 2018: Respiratory Physiology & Neurobiology
Aaisha Opel, Josephine Mansell, Alison Butler, Rhona Schwartz, Michael Fannon, Malcolm Finlay, Ross J Hunter, Richard J Schilling
Aims: We investigated safety and efficacy of a high throughput atrial fibrillation (AF) ablation service within a local non-cardiac centre compared with matched patients at the regional tertiary cardiac centre. Methods and results: Patients were consented in clinic and pre-assessed by clerical staff. Locally, other than physicians, staff had no experience of ablation and were trained with simulations. Pulmonary vein isolation (PVI) was performed with conscious sedation, on uninterrupted anticoagulation for at least 4 weeks...
July 30, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Thomas J M Verlinden, Paul van Dijk, Andreas Herrler, Corrie de Gier-de Vries, Wouter H Lamers, S Eleonore Köhler
Communicating fibres between the phrenic nerve and sympathetic nervous system may exist, but have not been characterized histologically and immunohistochemically, even though increased sympathetic activity due to phrenic nerve stimulation for central sleep apnoea may entail morbidity and mortality. We, therefore, conducted a histological study of the phrenic nerve to establish the presence of catecholaminergic fibres throughout their course. The entire phrenic nerves of 35 formalin-fixed human cadavers were analysed morphometrically and immunohistochemically...
August 3, 2018: Scientific Reports
Junyong In, Hansu Bae, Heyran Choi, Yong Beom Kim, Sangseok Lee, Hong Seuk Yang
BACKGROUND: The concentration range of dexamethasone that inhibits neuromuscular blockade (NMB) and sugammadex reversal remains unclear. OBJECTIVE: To evaluate the effects of dexamethasone on rocuronium-induced NMB and sugammadex reversal. DESIGN: Ex vivo study. SETTING: Asan Institute for Life Sciences, Asan Medical Center, Korea, from July 2015 to November 2015. ANIMALS: One hundred sixty male Sprague-Dawley rats...
July 23, 2018: European Journal of Anaesthesiology
Tadasu Kohno
Background: Thoracoscopic surgery has been widely performed. However, sometimes open conversion becomes necessary to manage complications. We have been applying thoracoscopic technique to manage complications to minimize the rate of open conversion. Methods: Thoracoscopic suture technique in addition to some other technique has been used to control intraoperative bleeding, nerve injury and bronchial damage. Pulmonary artery bleeding could happen in thoracoscopic surgery...
June 2018: Journal of Thoracic Disease
P Kot Baixauli, P Rodriguez Gimillo, J Baldo Gosalvez, J de Andrés Ibáñez
Phrenic nerve block is a complication that can occur after brachial plexus anaesthesia above the clavicle. The main consequence of this blockage is ipsolateral diaphragmatic paralysis, which can sometimes lead to the appearance of post-operative respiratory complications. A case is presented on a woman, who after having undergone a total shoulder prosthesis, presented with dyspnoea in the post-operative recovery unit. A diaphragmatic ultrasound was performed that enabled a rapid diagnosis to be made of a complete paralysis of the ipsolateral hemi-diaphragm...
July 19, 2018: Revista Española de Anestesiología y Reanimación
João Mesquita, Jaskanwal Bisla, Anson Lee, Marco Perez
No abstract text is available yet for this article.
July 2018: HeartRhythm Case Reports
Nipunie S Rajapakse, Kevin Ellsworth, Rachael M Liesman, Mai Lan Ho, Nancy Henry, Elitza S Theel, Adam Wallace, Ana Catarina Ishigami Alvino, Luisa Medeiros de Mello, Jucille Meneses
Since the first identification of neonatal microcephaly cases associated with congenital Zika virus infection in Brazil in 2015, a distinctive constellation of clinical features of congenital Zika syndrome has been described. Fetal brain disruption sequence is hypothesized to underlie the devastating effects of the virus on the central nervous system. However, little is known about the effects of congenital Zika virus infection on the peripheral nervous system. We describe a series of 4 cases of right unilateral diaphragmatic paralysis in infants with congenital Zika syndrome suggesting peripheral nervous system involvement and Zika virus as a unique congenital infectious cause of this finding...
August 2018: Emerging Infectious Diseases
Matthew R Reynolds, Qi Zheng, Gheorghe Doros
INTRODUCTION: The HeartLight laser balloon ablation system was FDA approved in 2016 for the treatment of paroxysmal AF, but there have been numerous single and multicenter studies published reporting its outcomes, in addition to a few randomized trials. We aimed to systematically review and synthesize currently published outcome data on AF ablation using the laser balloon ablation system. METHODS AND RESULTS: We performed a systematic review and meta-analysis of published studies of AF ablation performed using the laser balloon ablation system...
July 17, 2018: Journal of Cardiovascular Electrophysiology
Noura El-Masri, Fatima Saj, Tarek Wehbe, Georges Nasrallah, Sarkis Ejbeh
Phrenic nerve palsy (PNP) is a potential complication of cardiac surgery. It may prolong ventilation and hospitalization and result in significant morbidity and mortality. The diagnosis and management of PNP following cardiac surgery is reviewed.
July 16, 2018: Journal of Cardiac Surgery
Christian-Hendrik Heeger, Verena Tscholl, Omar Salloum, Erik Wissner, Thomas Fink, Laura Rottner, Peter Wohlmuth, Barbara Bellmann, Mattias Roser, Shibu Mathew, Bruno Reißmann, Christine Lemeš, Tilman Maurer, Francesco Santoro, Britta Goldmann, Ulf Landmesser, Feifan Ouyang, Karl-Heinz Kuck, Andreas Rillig, Andreas Metzner
BACKGROUND: Second-generation cryoballoon (CB2)-based pulmonary vein isolation (PVI) has demonstrated encouraging clinical results in the treatment of paroxysmal (PAF) and persistent atrial fibrillation (PersAF). However rhythm follow-up after PVI is mainly based on Holter ECG of limited duration. OBJECTIVE: The aim of this study was to assess the real AF burden following CB2-based PVI in patients with implanted cardiac devices. METHODS: A total of 670 consecutive patients underwent CB2-based PVI in three EP centers...
July 12, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Ammar M Killu, Niyada Naksuk, Faisal F Syed, Christopher V DeSimone, Prakriti Gaba, Chance Witt, Dorothy J Ladewig, Scott H Suddendorf, Joanne M Powers, Gaurav Satam, Zdeněk Stárek, Tomas Kara, Jiří Wolf, Pavel Leinveber, Michal Crha, Miroslav Novák, Charles J Bruce, Paul A Friedman, Samuel J Asirvatham
PURPOSE: To demonstrate the feasibility of directional percutaneous epicardial ablation using a partially insulated catheter. METHODS: Partially insulated catheter prototypes were tested in 12 (6 canine, 6 porcine) animal studies in two centers. Prototypes had interspersed windows to enable visualization of epicardial structures with ultrasound. Epicardial unipolar ablation and ablation between two electrodes was performed according to protocol (5-60 W power, 0-60 mls/min irrigation, 78 s mean duration)...
July 14, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Michael J Barrington, Yoshiaki Uda
PURPOSE OF REVIEW: Ultrasound guidance has become the accepted standard of practice for peripheral regional anesthesia. Despite evidence supporting the efficacy of ultrasound-guided regional anesthesia, its impact on patient safety has been less clear. RECENT FINDINGS: Evidence has been consistent that ultrasound guidance reduces the incidence of vascular injury, local anesthetic systemic toxicity, pneumothorax and phrenic nerve block. Within the limited global scope of the epidemiology and etiologic complexity of perioperative (including block-related) peripheral nerve injury, there has not been consistent evidence that ultrasound guidance is associated with a reduced incidence of nerve injury...
July 12, 2018: Current Opinion in Anaesthesiology
Guang-Liang Hao, Tian-Yin Zhang, Qiang Zhang, Ming-Yong Gu, Chen Chen, Lin Zou, Xue-Cheng Cao, Gui-Chun Zhang
BACKGROUND Brachial plexus injury (BPI), a severe nervous system injury, is a leading cause of functional damages of the affected upper limb. Patients with BPI manifested with motor weakness or paralysis, sensory deficits, and pain. We established a BPI rat model to explore the in vivo effect of end-to-side screw anastomosis (ETSSA) of phrenic nerve on the recovery of limb function after BPI. MATERIAL AND METHODS After modeling, rats were treated with end-to-side anastomosis (ETSA) and ETSSA respectively. After 1 and 3 months, the behavioral changes of rats were observed using the Terzis grooming test, and the compound muscle action potential (CMAP) and muscle tension of biceps brachii were detected...
July 12, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Yuki Takahashi, Masahiro Miyajima, Taijiro Mishina, Ryunosuke Maki, Makoto Tada, Kodai Tsuruta, Atsushi Watanabe
BACKGROUND: Combined resection of a phrenic nerve is occasionally required in T3 primary lung carcinomas invading the phrenic nerve to completely remove a malignant tumour, resulting in diaphragmatic paralysis. We describe the first case of thoracoscopic lobectomy and diaphragmatic plication as a one-stage surgery for lung cancer invading the phrenic nerve. CASE PRESENTATION: A 56-year-old woman with a T3N0M0 primary adenosquamous carcinoma in the left upper lobe presented with suspicious invasion to the anterior mediastinal fat tissue and left phrenic nerve and underwent left upper lobectomy, node dissection, and partial resection of the anterior mediastinal fat tissue with the left phrenic nerve...
July 9, 2018: Journal of Cardiothoracic Surgery
Obaid U Khurram, Matthew J Fogarty, Tiffany L Sarrafian, Arjun Bhatt, Carlos B Mantilla, Gary C Sieck
The diaphragm muscle (DIAm) is the primary inspiratory muscle in mammals and is active during ventilatory behaviors, but it is also involved in higher-force behaviors such as those necessary for clearing the airway. Our laboratory has previously reported DIAm sarcopenia in rats and mice characterized by DIAm atrophy and a reduction in maximum specific force at 24 months of age. In Fischer 344 rats, these studies were limited to male animals, although in other studies, we noted a more rapid increase in body mass from 6 to 24 months of age in females (~140%) compared to males (~110%)...
July 2018: Physiological Reports
Yuzhou Liu, Yongqing Zhuang, Hu Yu, Hongtao Xiong, Jie Lao
The widely used nerve transfer sources for elbow flexion in patients with upper brachial plexus avulsion (UBPA) include partial ulnar nerve, phrenic nerve, and intercostal nerves. A retrospective review of 21 patients treated with phrenic and partial ulnar nerve transfers for elbow flexion after UBPA was carried out. In the phrenic nerve transfer group, the phrenic nerve was transferred to the anterolateral bundle of the anterior division of the upper trunk; in the partial ulnar nerve transfer group, one fascicle of the ulnar nerve was transferred to the biceps branch...
June 8, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"