Read by QxMD icon Read

Nerve catheters

Nancy E Epstein
Background: The risk of spinal cord injury (SCI) due to decreased cord perfusion following thoracic/thoracoabdominal aneurysm surgery (T/TL-AAA) and thoracic endovascular aneurysm repair (TEVAR) ranges up to 20%. For decades, therefore, many vascular surgeons have utilized cerebrospinal fluid drainage (CSFD) to decrease intraspinal pressure and increase blood flow to the spinal cord, thus reducing the risk of SCI/ischemia. Methods: Multiple studies previously recommend utilizing CSFD following T/TL-AAA/TEVAR surgery to treat SCI by increasing spinal cord blood flow...
2018: Surgical Neurology International
Andrew T Koogler, Michael Kushelev
A 76-year-old male presented for reverse total shoulder arthroplasty (TSA) in the beach chair position. A preoperative interscalene nerve catheter was placed under direct ultrasound-guidance utilizing a posterior in-plane approach. On POD 2, the catheter was removed. Three weeks postoperatively, the patient reported worsening dyspnea with a subsequent chest X-ray demonstrating an elevated right hemidiaphragm. Pulmonary function testing revealed worsening deficit from presurgical values consistent with phrenic nerve palsy...
2018: Case Reports in Anesthesiology
Naoko Yamaguchi, Kentaro Yamakawa, Pradeep S Rajendran, Tatsuo Takamiya, Marmar Vaseghi
BACKGROUND: Neuraxial modulation with cardiac sympathetic denervation (CSD) can potentially reduce burden of ventricular tachy-arryhthmias (VT). Despite catheter ablation and CSD, however, VT can recur in patients with cardiomyopathy and the role of vagal nerve stimulation (VNS) in this setting is unclear. OBJECTIVE: The purpose of this study was to evaluate electrophysiological effects of VNS after CSD in normal and infarcted hearts. METHODS: In 10 normal and 6 infarcted pigs, electrophysiological and hemodynamic parameters were evaluated before and during intermittent VNS pre-CSD (bilateral stellectomy and T2-T4 thoracic ganglia removal) as well as post-CSD...
March 9, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Berk Hazır, Hakan Bahadır Haberal, Devrim Akıncı, Bülent Akdoğan
INTRODUCTION: A pelvic lymphocele is a collection of lymphatic fluid that develops after extensive lymphadenectomies in surgeries such as urological malignancies or renal transplantation. Pelvic lymphoceles may cause complications such as fever, abdominal pain, leg swelling, genital swelling and flank pain. This report summarizes the management of a pelvic lymphocele after open radical retropubic prostatectomy with bilateral lymphadenectomy. PRESENTATION OF CASE: Herein, we present a case in which a pelvic lymphocele developed seven months post-radical open retropubic prostatectomy and through this patient we discussed the lymphocele following radical prostatectomy...
March 6, 2018: International Journal of Surgery Case Reports
Aleksandr Voskoboinik, Paul B Sparks, Joseph B Morton, Geoffrey Lee, Stephen A Joseph, Joshua J Hawson, Peter M Kistler, Jonathan M Kalman
BACKGROUND: Despite technological advances, studies continue to report high complication rates for atrial fibrillation (AF) ablation. We sought to review complication rates for AF ablation at a high-volume centre over a 14-year period and identify predictors of complications. METHODS: We reviewed prospectively collected data from 2750 consecutive AF ablation procedures at our institution using radiofrequency energy (RF) between January 2004 and May 2017. All cases were performed under general anaesthetic with transoesophageal echocardiography (TEE), 3D-mapping and an irrigated ablation catheter...
February 3, 2018: Heart, Lung & Circulation
Morten Rune Blichfeldt-Eckhardt
The thesis comprises an overview and four papers, all published or submitted for publication in international peer-reviewed scientific journals.
Chronic pain after surgery is a common and debilitating complication after many types of surgery. The cause and pathology behind is still mainly uncovered, though several risk factors have been proposed. One of the strongest risk factors for persistent postsurgical pain is the intensity of the acute pain response though the mechanisms involved remain unsettled...
March 2018: Danish Medical Journal
Erin Sweet, Christine S Shusterman, Marina S Nedeljkovic, Jean C Solodiuk
Pain is a complex physical and emotional experience. Therefore, assessment of acute pain requires self-report when possible, observations of emotional and behavioral responses and changes in vital signs. Peripheral nerve and epidural catheters often provide postoperative analgesia in children. Administration of chloroprocaine (a short acting local anesthetic) via a peripheral nerve or epidural catheter allows for a comparison of pain scores, observations of emotional and behavioral responses and changes in vital signs to determine catheter function...
March 1, 2018: Pain Management Nursing: Official Journal of the American Society of Pain Management Nurses
Kamiar Ghoseiri, Mostafa Allami, Mohammad Reza Soroush, Mohammad Yusuf Rastkhadiv
The prevalence of limb amputation is increasing globally as a devastating experience that can physically and psychologically affect the lifestyle of a person. The residual limb pain and phantom limb pain are common disabling sequelae after amputation surgery. Assistive devices/technologies can be used to relieve pain in people with amputation. The existing assistive devices/technologies for pain management in people with amputation include electrical nerve block devices/technologies, TENS units, elastomeric pumps and catheters, residual limb covers, laser systems, myoelectric prostheses and virtual reality systems, etc...
January 23, 2018: Military Medical Research
Jacqueline K Limberg, Elizabeth P Ott, Walter W Holbein, Sarah Elizabeth Baker, Timothy B Curry, Wayne T Nicholson, Michael J Joyner, J Kevin Shoemaker
To study how changes in baroreceptor afferent activity affect patterns of sympathetic neural activation, we manipulated arterial blood pressure using intravenous nitroprusside (NTP) and phenylephrine (PE) and measured action potential (AP) patterns with wavelet-based methodology. We hypothesized: 1) Baroreflex unloading (NTP) would increase firing of low-threshold axons and recruitment of latent axons, and 2) Baroreflex loading (PE) would decrease firing of low-threshold axons. Heart rate (HR, ECG), arterial blood pressure (BP, brachial catheter), and muscle sympathetic nerve activity (MSNA, microneurography of the peroneal nerve) were measured at baseline and during steady-state systemic, intravenous NTP (0...
February 28, 2018: Journal of Neurophysiology
Wilber Su, G Joseph Orme, Robert Hoyt, James Baker, Steven Compton, Christopher Fellows, John Harding, J Thomas Svinarich, Marcin Kowalski, Bryan Piedad, David Kenigsberg, John Seger, Zeshan K Ahmad, Paul Wang
BACKGROUND: Pulmonary vein isolation (PVI) via catheter ablation is an approved therapy for patients with drug-refractory and symptomatic atrial fibrillation (AF). Furthermore, cryoballoon is now considered to be as effective as focal radiofrequency catheter ablation. This study examines the second-generation cryoballoon performance in a US multicenter review of real-world practices. METHODS: By retrospective chart collections, the long-term efficacy and safety of the cryoballoon procedure were assessed in 15 US centers...
February 24, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Sjaak Pouwels, Darryl M Coll, Alexander G J van Marle
A 70-year-old man was admitted to our hospital for a penile circumcision due to phimosis using continuous dose spinal anaesthesia. On postoperative day 10 he came to the emergency department with a superficial abscess localised at the injection site of the spinal catheter. He was treated with intravenous antibiotics for 10 days, and the superficial abscess was incised and drained. Ten days later, the patient was readmitted to the emergency department with complaints of back pain and fever. A repeat MRI scan of his lumbar sacral area was done and showed epidural abscesses without any compression of the medulla or the myelum...
February 23, 2018: BMJ Case Reports
Qing Zhao Ruan, Shawn Diamond, Scott Zimmer, Matthew L Iorio
BACKGROUND: Perioperative pain, increased sympathetic tone, and peripheral vasospasm may be safely managed with regional nerve blockade during microvascular reconstruction in the lower extremity. Limited reports exist in this setting; therefore, we evaluated our use of peripheral nerve catheters (PNCs) during microvascular limb salvage to determine safety and efficacy for both patient and flap. METHODS: A single-institution, retrospective review of a prospectively maintained database on all patients with lower extremity free tissue transfers between 2012 and 2017 was completed...
February 16, 2018: Journal of Reconstructive Microsurgery
Cristian Sevcencu, Thomas N Nielsen, Johannes J Struijk
OBJECTIVES: As the left vagus nerve (LVN) mediates a baroreflex blood pressure (BP) decrease, LVN stimulation (LVNS) could be a therapy for hypertension. Moreover, LVNS could elegantly be adjusted to the patient's actual BP and physical activity by using the neural information about BP and respiration extractable from LVN. However, unselective LVNS will trigger undesirable side-effects and therefore we here investigated the feasibility of using an intraneural electrode for extracting BP and respiration markers from the LVN and for selective LVNS...
February 14, 2018: Neuromodulation: Journal of the International Neuromodulation Society
Victoria Jacobs, Heidi T May, Brian G Crandall, Becca Ballantyne, Ben Chisum, Dave Johnson, Kevin G Graves, Michael Cutler, John D Day, Charles Mallender, Jeffrey S Osborn, J Peter Weiss, Thomas Jared Bunch
BACKGROUND: Vagus nerve injury during catheter ablation for atrial fibrillation (AF) can significantly impact quality of life and result in lingering gastrointestinal symptoms. This study was designed to define risk factors of vagal nerve injury, symptom prevalence and temporal resolution. METHODS: A total of 100 patients undergoing radiofrequency catheter ablation (RFCA) were enrolled and consented to participate in the study. Patients completed a 22 item questionnaire that included questions specific to vagus nerve injury symptomatology during their baseline visit and at 1 and 3 months post-RFCA...
February 13, 2018: Pacing and Clinical Electrophysiology: PACE
Dominik Linz, Mathias Hohl, Adrian D Elliott, Dennis H Lau, Felix Mahfoud, Murray D Esler, Prashanthan Sanders, Michael Böhm
Renal afferent and efferent sympathetic nerves are involved in the regulation of blood pressure and have a pathophysiological role in hypertension. Additionally, several conditions that frequently coexist with hypertension, such as heart failure, obstructive sleep apnea, atrial fibrillation, renal dysfunction, and metabolic syndrome, demonstrate enhanced sympathetic activity. Renal denervation (RDN) is an approach to reduce renal and whole body sympathetic activation. Experimental models indicate that RDN has the potential to lower blood pressure and prevent cardio-renal remodeling in chronic diseases associated with enhanced sympathetic activation...
February 10, 2018: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
Zhi-Yong Wang, Jian-Wei Wang, Li-Hua Qin, Wei-Guang Zhang, Pei-Xun Zhang, Bao-Guo Jiang
AIMS: To investigate the efficacy of chitin biological absorbable catheters in a rat model of autologous nerve transplantation. METHODS: A segment of sciatic nerve was removed to produce a sciatic nerve defect, and the sural nerve was cut from the ipsilateral leg and used as a graft to bridge the defect, with or without use of a chitin biological absorbable catheter surrounding the graft. The number and morphology of regenerating myelinated fibers, nerve conduction velocity, nerve function index, triceps surae muscle morphology, and sensory function were evaluated at 9 and 12 months after surgery...
February 8, 2018: CNS Neuroscience & Therapeutics
Ren-Jay Shei, Robert F Chapman, Allison H Gruber, Timothy D Mickleborough
Thoracic load carriage (LC) exercise impairs exercise performance compared to unloaded exercise, partially due to impaired respiratory mechanics. We investigated the effects of LC on exercise and diaphragmatic fatigue in a constant-load exercise task; and whether inspiratory muscle training (IMT) improved exercise capacity and diaphragmatic fatigue with LC. Twelve recreationally active males completed three separate running trials to exhaustion (Tlim ) at a fixed speed eliciting 70% of their V˙O2max . The first two trials were completed either unloaded (UL) or while carrying a 10 kg backpack (LC)...
February 2018: Physiological Reports
Michaela B Quast, Hans P Sviggum, Andrew C Hanson, David E Stoike, David P Martin, Adam D Niesen
STUDY OBJECTIVES: Continuous brachial plexus catheters are often used to decrease pain following elbow surgery. This investigation aimed to assess the rate of early failure of infraclavicular (IC) and axillary (AX) nerve catheters following elbow surgery. DESIGN: Retrospective study. SETTING: Postoperative recovery unit and inpatient hospital floor. PATIENTS: 328 patients who received IC or AX nerve catheters and underwent elbow surgery were identified by retrospective query of our institution's database...
February 3, 2018: Journal of Clinical Anesthesia
Jason D Foss, Jessica Fiege, Yoji Shimizu, John P Collister, Tim Mayerhofer, Laurel Wood, John W Osborn
Hypertension is the leading modifiable risk factor for death worldwide, yet the causes remain unclear and treatment remains suboptimal. Catheter-based renal denervation (RDNX) is a promising new treatment for resistant hypertension, but the mechanisms underlying its antihypertensive effect remain unclear. We recently found that RDNX attenuates deoxycorticosterone acetate-salt hypertension and that this is dependent on ablation of afferent renal nerves and is associated with decreased renal inflammation. To determine if this is common to other models of salt-sensitive hypertension, rats underwent complete RDNX (n = 8), selective ablation of afferent renal nerves (n = 8), or sham denervation (n = 8)...
February 2018: Physiological Reports
Hironobu Hayashi, Masahiro Okamoto, Hideaki Kawanishi, Nobuoki Tabayashi, Toyoaki Matsuura, Shigeki Taniguchi, Masahiko Kawaguchi
OBJECTIVE: This study was designed to investigate the association between ocular blood flow measured using laser speckle flowgraphy (LSFG) and radial arterial pressure during aortic arch surgery. DESIGN: A prospective study. SETTING: A single university hospital. PARTICIPANTS: This study included 24 patients undergoing aortic arch surgery with cardiopulmonary bypass (CPB) using antegrade selective cerebral perfusion (SCP)...
August 2, 2017: Journal of Cardiothoracic and Vascular Anesthesia
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"