scholarly journals Septal pacing using an inner guiding catheter without an outer sheath: A case series

2021 ◽  
Author(s):  
Yusuke Morita ◽  
Junji Morita ◽  
Yusuke Kondo ◽  
Takayuki Kitai ◽  
Tsutomu Fujita ◽  
...  
Keyword(s):  
Case Series ◽  
Outer Sheath ◽  
Septal Pacing ◽  
Guiding Catheter

scholarly journals Usefulness of lead delivery catheter system for true right ventricular septal pacing

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
K Miyajima ◽  
T Urushida ◽  
K Ito ◽  
F Kin ◽  
A Okazaki ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Pacemaker Implantation ◽  
Septal Wall ◽  
Catheter Group ◽  
Catheter System ◽  
Septal Pacing ◽  
Ventricular Activation ◽  
Pacing Lead ◽  
Guiding Catheter ◽  
Delivery Catheter

Abstract Background Right ventricular (RV) septal pacing is often selected to preserve a more physiologic ventricular activation. But the pacing leads are not always located in true septal wall, rather in hinge or free wall in some cases with the conventional stylet-guided lead implantation. In recent years, new guiding catheter systems has attracted attention as a solution to that problem. Objective The aim of this study is to investigate that true ventricular sepal pacing can be achieved by use of the new guiding catheter system for pacing lead. Methods We enrolled 198 patients who underwent RV septal lead implantation and computed tomography (CT) after pacemaker implantation. 16 cases were used delivery catheter (Delivery), and 182 cases were used stylet for targeting ventricular septum (Conventional). We analyzed the lead locations with CT, and evaluated capture thresholds, R-wave amplitudes, lead impedances and 12-lead electrocardiogram findings one month after implantation. Results All cases of delivery catheter group had true septal lead positions (Delivery; 100% vs Conventional; 44%, p<0.01). Capture thresholds and lead impedances had not significant differences between between two groups (0.65±0.15V vs 0.60±0.15V, p=0.21, 570±95Ω vs 595±107Ω, p=0.39, respectively). R-wave amplitudes were significantly higher in delivery catheter group (13.0±4.8mV vs 10±4.6mV, p<0.01). Paced QRS durations were shorter in delivery catheter group (128±16ms vs 150±21ms, p<0.01). Conclusions The delivery catheter system designated for pacing lead can contribute to select the true ventricular septal sites and to attain the more physiologic ventricular activation. Funding Acknowledgement Type of funding source: None

scholarly journals Impact of atrial septal pacing in left ventricular-only pacing in patients with a first-degree atrioventricular block: a case series

2021 ◽  
Author(s):  
Yu Murata ◽  
Kohei Ishibashi ◽  
Kenichiro Yamagata ◽  
Chisato Izumi ◽  
Teruo Noguchi ◽  
...  
Keyword(s):  
Atrioventricular Block ◽  
Case Series ◽  
Left Ventricular ◽  
Septal Pacing

scholarly journals Use of an Internal Retractor for Percutaneous Full-Endoscopic Resection in Cervical Intervertebral Disc Herniation with a Posterior Approach

2020 ◽  
Vol 14 (4) ◽  
pp. 489-494
Author(s):  
Shu Nakamura ◽  
Mitsuto Taguchi
Keyword(s):  
Intervertebral Disc ◽  
Nerve Root ◽  
Spinal Canal ◽  
Posterior Approach ◽  
Case Series ◽  
Intervertebral Discs ◽  
Herniated Disc ◽  
Intervertebral Disc Herniation ◽  
Postoperative Course ◽  
Outer Sheath

Study Design: A preliminary case series study.Purpose: For the safety of performing a posterior percutaneous full-endoscopic cervical discectomy.Overview of Literature: Because of the lack of space for inserting an outer sheath above the intervertebral disc in the spinal canal, grasping the herniated disc with forceps while retracting the nerves with the forceps itself was required. This procedure produces the risk of inadvertently injuring nerves because of inadequate visualization of the hernia and inadequate protection of the nerve.Methods: Our new internal retractor can be inserted into the working channel of a percutaneous full-endoscope, enabling the insertion of a second tool. After partial foraminotomy, the internal retractor and forceps were manipulated to reliably retract the nerve root. Finally, the herniated disc was resected under an endoscopic view.Results: All six cases had a good postoperative course, and postoperative neuropathy was not observed.Conclusions: This internal retractor allows for the secure resection herniated cervical intervertebral discs.

Abstract #856 A Case Series Review of Clinical and Biochemical Characteristics of Pituitary Abcess in Mexican Patients

2018 ◽  
Vol 24 ◽  
pp. 202-203
Author(s):  
Mireya Perez-Guzman ◽  
Alfredo Nava de la Vega ◽  
Arturo Pena Velarde ◽  
Tania Raisha Torres Victoria ◽  
Froylan Martinez-Sanchez ◽  
...  
Keyword(s):  
Case Series ◽  
Biochemical Characteristics ◽  
Mexican Patients

Cannabis-associated arteritis

VASA ◽  
2010 ◽  
Vol 39 (1) ◽  
pp. 43-53 ◽  
Author(s):  
Grotenhermen
Keyword(s):  
Systematic Review ◽  
Case Reports ◽  
Case Series ◽  
Cardiovascular Effects ◽  
Causative Factor ◽  
Cannabis Use ◽  
Thromboangiitis Obliterans ◽  
Pathological Features ◽  
Scientific Support ◽  
Clinical And Pathological Features

Background: To investigate the hypothesis that cases of arteritis similar to thromboangiitis obliterans (TAO) and associated with the use of cannabis were caused by cannabis or THC (dronabinol), or that cannabis use is a co-factor of TAO. Patients and methods: A systematic review on case reports and the literature on so-called cannabis arteritis, TAO, and cardiovascular effects of cannabinoids was conducted. Results: Fifteen reports with 57 cases of an arteritis associated with the use of cannabis and two additional case series of TAO, in which some patients also used cannabis, were identified. Clinical and pathological features of cannabis-associated arteritis do not differ from TAO and the major risk factor of TAO, tobacco use, was present in most, if not in all of these cases. The proposed pathophysiological mechanisms for the development of an arteritis by cannabis use are not substantiated. Conclusions: The hypothesis of cannabis being a causative factor or co-factor of TAO or an arteritis similar to TAO is not supported by the available evidence. The use of the term “cannabis arteritis” should be avoided until or unless more convincing scientific support is forthcoming.

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