3,092 results match your criteria proximal clamping

Atraumatic proximal radial nerve entrapment. Illustrative cases and systematic review of literature.

Eur J Orthop Surg Traumatol 2021 Jun 18. Epub 2021 Jun 18.

Department of Radiology, Hôpital Pierre-Paul Riquet, 31059, Toulouse, France.

Purpose: The aims of the present study were to describe atraumatic proximal radial nerve entrapment (PRNE) and potential strategies for management.

Materials And Methods: We performed a comprehensive search of 4 electronic databases for studies pertaining to patients with atraumatic PRNE. Studies published between 1930 and 2020 were included. Read More

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The role of surgical and total endovascular techniques in the treatment of ruptured juxtarenal aortic aneurysms.

Vasa 2021 May 19:1-7. Epub 2021 May 19.

Department of Vascular Surgery and Research Vascular Centre, Asklepios Clinic Langen, University of Frankfurt, Langen, Germany.

Ruptured juxtarenal aortic aneurysms (RJAAA) represent a special challenge in clinical practice, but the evidence to guide therapeutic decision-making is scarce. The aim of this study was to present two different approaches, open surgical (OAR) and chimney endovascular repair (CHEVAR), for treating patients with RJAAA. This retrospective two-center study included all patients per center undergoing OAR or CHEVAR for RJAAA between February 2008 and January 2020. Read More

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Ruptured Abdominal Aortic Aneurysm Repair Using Open Proximal Anastomosis Under Deep Hypothermic Circulatory Arrest.

Ann Vasc Surg 2021 May 1. Epub 2021 May 1.

Department of Cardiovascular Surgery, Iwate Medical University, Shiwa, Iwate, Japan.

Proximal aortic clamping under normothermia is generally adequate for operative repair of abdominal aortic rupture; however, the hypothermic circulatory arrest (HCA) technique is not as common. Proximal exposure and clamping are sometimes difficult due to the risk of bleeding, rerupture, and ischemia. We present a successful case of a ruptured abdominal aortic aneurysm (AAA) that was repaired using cardiopulmonary bypass with HCA. Read More

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Role of enteric dopaminergic neurons in regulating peristalsis of rat proximal colon.

Neurogastroenterol Motil 2021 May 3:e14127. Epub 2021 May 3.

Department of Cell Physiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.

Background: Constipation is commonly seen in patients with Parkinson's disease associated with a loss of dopaminergic neurons in both central and enteric nervous systems. However, the roles of enteric dopaminergic neurons in developing constipation remain to be elucidated. Here, we investigated the roles of enteric dopaminergic neurons in the generation of colonic peristalsis. Read More

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ATF3-Expressing Large-Diameter Sensory Afferents at Acute Stage as Bio-Signatures of Persistent Pain Associated with Lumbar Radiculopathy.

Cells 2021 Apr 23;10(5). Epub 2021 Apr 23.

Institute of Biomedical Sciences, Academia Sinica, Taipei 115201, Taiwan.

The mechanism of pain chronicity is largely unknown in lumbar radiculopathy (LR). The anatomical location of nerve injury is one of the important factors associated with pain chronicity of LR. Accumulating evidence has shown constriction distal to the dorsal root ganglion (DRG) caused more severe radiculopathy than constriction proximal to the DRG; thereby, the mechanism of pain chronicity in LR could be revealed by comparing the differences in pathological changes of DRGs between nerve constriction distal and proximal to the DRG. Read More

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A Clampless Technique to Facilitate Successful End-to-End Anastomosis in Small Vessels With Spasm.

Ann Vasc Surg 2021 Apr 26. Epub 2021 Apr 26.

Department of Vascular Surgery, "Democritus" University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis, Greece.

End-to-end anastomosis in small arteries can be challenging, especially when the stumps are in spasm after traumatic transection. We describe a novel technique to facilitate such anastomoses under local anesthesia, presenting a 24-year old patient who suffered complete traumatic transection of the left ulnar artery. After having found and prepared the proximal and distal stumps, a soft polyurethane feeding tube (La-med Healthcare, India) and a vein cannula were inserted in the proximal and distal stump, respectively, without using vascular clamps. Read More

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Effect of cerebrospinal fluid pressure elevation on spinal cord perfusion during aortic cross-clamping with distal aortic perfusion.

Eur J Cardiothorac Surg 2021 Apr 11. Epub 2021 Apr 11.

University Department for Cardiac Surgery, Leipzig Heart Center, Leipzig, Germany.

Objectives: Distal aortic perfusion (DaP) is a widely accepted protective adjunct facilitating early reinstitution of visceral perfusion during extended thoracic and thoraco-abdominal aortic repair. DaP has also been suggested to secure distal inflow to the paraspinal collateral network via the hypogastric arteries and thereby reduce the risk of spinal cord ischaemia. However, an increase in cerebrospinal fluid (CSF) pressure is frequently observed during thoracoabdominal aortic aneurysm repair. Read More

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Open Surgical Treatment of Acute Spontaneous Isolated Abdominal Aortic Dissection.

Ann Vasc Surg 2021 Apr 6. Epub 2021 Apr 6.

Clinic for Vascular and Endovascular Surgery, Clinical Center of Serbia, Belgrade; Faculty of Medicine, University of Belgrade, Serbia.

Background: The aim of this paper is to report our single-center experience in the open surgical treatment of acute spontaneous infrarenal isolated abdominal aortic dissection (siIAAD).

Methods: This was a single center retrospective study. Between January 2015 and 2020 ten patients were treated due to acute siIAAD with open surgery. Read More

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Lingual mucosa graft ureteroplasty for ureteral stricture: a narrative review of the current literature.

Ann Palliat Med 2021 Apr 23;10(4):4840-4845. Epub 2021 Mar 23.

Department of Urology, Peking University First Hospital, Beijing, China; Institute of Urology, Peking University, Beijing, China; National Urological Cancer Center, Beijing, China.

Long proximal or middle ureteral strictures remain challenging conditions. Although ileal replacement of the ureter or renal autotransplantation are possible solutions for these problems, both present complexities and considerable morbidity. In recent years, many urologists have tended to use oral mucosal grafts to repair complex proximal or middle ureteral strictures and thereby avoid ileal replacement and renal autotransplantation. Read More

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Balloon Endoclamping for Postdissection Infrarenal Aorto-Iliac Aneurysm Repair.

Ann Vasc Surg 2021 Apr 5. Epub 2021 Apr 5.

Lancisi Cardiovascular Center, Vascular Surgery Unit, Ancona, Italy.

Background: Isolated post dissection infrarenal and iliac aneurysm is a rare condition that often requires surgical treatment. Surgical repair should involve the replacement of the aneurysmal segments and a wide fenestration in the residual proximal untreated abdominal aorta. However, in these patients proximal aortic clamping may be challenging. Read More

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Stand-Alone Posterior Expandable Cage Technique for Adjacent Segment Degeneration with Lumbar Spinal Canal Stenosis: A Retrospective Case Series.

Medicina (Kaunas) 2021 Mar 4;57(3). Epub 2021 Mar 4.

Joint and Arthritis Research, Orthopaedic Surgery, Himchan Hospital, 20, Sinmok-ro, Yangcheon-gu, Seoul 07999, Korea.

: Symptomatic adjacent segment degeneration (ASD) with lumbar spinal canal stenosis (LSCS) is a common complication after spinal intervention, particularly interbody fusion. Stand-alone posterior expandable cages enable interbody fusion with preservation of the previous operation site, and screw-related complications are avoided. Thus, the aim of this study was to investigate the clinicoradiologic outcomes of stand-alone posterior expandable cages for ASD with LSCS. Read More

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The Effects of Aortic Clamping Strategy on Myocardial Protection and Early Postoperative Outcomes During Coronary Artery Bypass Grafting Operations.

Heart Surg Forum 2021 03 3;24(2):E217-E222. Epub 2021 Mar 3.

University of Health Sciences, Bursa Yuksek Ihtisas Training and Research Hospital, Department of Clinical Biochemistry, Mimar Sinan Town. Yıldırım/BURSA, Turkey.

Background: The purpose of the present study was to compare the effects of two different clamping strategies for the construction of the proximal aortocoronary anastomoses on myocardial protection and postoperative outcomes during coronary artery bypass grafting (CABG) operations.

Methods: In this retrospective study, we examined prospectively collected data of patients who underwent CABG for a 3-year period. Two hundred consecutive patients, who were diagnosed with triple vessel coronary artery disease (CAD), were selected and divided into two groups. Read More

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Evacuation Technique of Left-Sided Inferior Vena Cava for a Successful Open Repair of a Large Juxtarenal Aortic Aneurysm.

Vasc Specialist Int 2021 Mar;37(1):41-45

Department of Radiology, School of Medicine of University of Patras, Patras, Greece.

We report a case of successful open repair of a 7.5-cm juxtarenal abdominal aortic aneurysm (AAA) in the presence of a left-sided inferior vena cava (LS-IVC) crossing the aorta at the level of the renal arteries in a 72-year-old man. The orifice of the right renal artery was slightly caudal to that of the left renal artery and concomitant occlusive diseases of both iliac arteries were present. Read More

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Effects of local coronary blood flow dynamics on the predictions of a model of in-stent restenosis.

J Biomech 2021 05 6;120:110361. Epub 2021 Mar 6.

University of Amsterdam, The Netherlands.

Computational models are increasingly used to study cardiovascular disease. However, models of coronary vessel remodelling usually make some strong assumptions about the effects of a local narrowing on the flow through the narrowed vessel. Here, we test the effects of local flow dynamics on the predictions of an in-stent restenosis (ISR) model. Read More

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Urinary Cyclophilin A as Marker of Tubular Cell Death and Kidney Injury.

Biomedicines 2021 Feb 20;9(2). Epub 2021 Feb 20.

Research Institute-Fundación Jiménez Díaz, Autonoma University, 28040 Madrid, Spain.

Despite the term acute kidney injury (AKI), clinical biomarkers for AKI reflect function rather than injury and independent markers of injury are needed. Tubular cell death, including necroptotic cell death, is a key feature of AKI. Cyclophilin A (CypA) is an intracellular protein that has been reported to be released during necroptosis. Read More

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February 2021

Impact of Single versus Double Clamp Technique on Blood Lactate Levels and Postoperative Complications in Coronary Artery Bypass Surgery.

Braz J Cardiovasc Surg 2021 Mar 1. Epub 2021 Mar 1.

Department of Cardiovascular Surgery, Erciyes Universitesi Tip Fakultesi, Kayseri, Turkey.

Introduction: Cardiopulmonary bypass (CPB) is associated with hyperlactatemia, which leads to adverse clinical outcomes. No study has examined the effect of different clamping techniques on postoperative hyperlactatemia (PHL). Thus, we aimed to evaluate the impact of two different techniques on PHL and the clinical outcomes in patients undergoing isolated coronary artery bypass surgery. Read More

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Optical coherence tomography of arteriolar diameter and capillary perfusion during spreading depolarizations.

J Cereb Blood Flow Metab 2021 Feb 16:271678X21994013. Epub 2021 Feb 16.

Neurovascular Research Unit, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, USA.

Spreading depolarization (SD) is associated with profound oligemia and reduced oxygen availability in the mouse cortex during the depolarization phase. Coincident pial arteriolar constriction has been implicated as the primary mechanism for the oligemia. However, where in the vascular bed the hemodynamic response starts has been unclear. Read More

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February 2021

Can cryptogenic multifocal ulcerous stenosing enteritis (CMUSE) be diagnosed in a patient with non-steroidal anti-inflammatory drug exposure?

BMJ Case Rep 2021 Feb 4;14(2). Epub 2021 Feb 4.

Department of Hepatobiliary and Pancreatic Surgery, Mayo Clinic, Rochester, Minnesota, USA.

The differential diagnosis for ulcerating small bowel strictures is extensive and includes exposure to non-steroidal anti-inflammatory drugs (NSAIDs), Crohn's disease, infections, gastrointestinal lymphoma and vasculopathy. It also encompasses the exceptionally rare and poorly understood diagnosis of cryptogenic multifocal ulcerative stenosing enterocolitis (CMUSE), often a diagnosis of exclusion and considerable difficulty. We present a case of persistent proximal jejunal ulcerating stenoses in a 75-year-old Caucasian man, which continued despite cessation of NSAIDs. Read More

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February 2021

P2X7 receptor signaling promotes inflammation in renal parenchymal cells suffering from ischemia-reperfusion injury.

Cell Death Dis 2021 01 27;12(1):132. Epub 2021 Jan 27.

Department of Nephrology, Molecular Cell Lab for Kidney Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Extracellular adenosine triphosphate (ATP) and its receptor, P2X7 receptor (P2X7R), are playing an important role in the pathological process of renal ischemia-reperfusion injury, but their underlying mechanism remains unclear. Also, the effects of tubular epithelium-expressed P2X7 receptor on ischemia acute kidney injury is still unknown. The aim of this study is to clarify if this mechanism involves the activation of nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) inflammasome in the renal tubular epithelial cells. Read More

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January 2021

Toward stroke-free coronary surgery: The role of the anaortic off-pump bypass technique.

J Card Surg 2021 Apr 27;36(4):1499-1510. Epub 2021 Jan 27.

Division of Cardiac Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.

Surgical coronary revascularization remains the preferred strategy in a significant portion of patients with coronary artery disease due to superior long-term outcomes. However, there is a significant risk of perioperative neurologic injury that has influenced guideline recommendations. These complications occur in 1%-5% of patients, ranging from overt neurologic deficits with permanent disability, to subtle cerebral defects noted on neuroimaging that may result in slow cognitive and functional decline. Read More

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Combined Transradial and Transfemoral Approach Using a Compliant Balloon for Emboli Protection at the Vertebral Artery During Subclavian Stenosis Stenting: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 Apr;20(5):E376-E377

Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City, Iowa.

Endovascular intervention has become the mainstay of treatment for subclavian artery stenosis in many centers, with high technical success and low complication rates.1,2 However, potential embolization during proximal subclavian artery intervention can lead to catastrophic posterior circulation ischemic complications.3-5 Although considered a rare complication, the presence of a contralateral hypoplastic vertebral artery with persisting anterograde vertebral blood flow on the affected side is likely to increase the risk of embolization. Read More

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TRPM3 Channels Play Roles in Heat Hypersensitivity and Spontaneous Pain after Nerve Injury.

J Neurosci 2021 03 21;41(11):2457-2474. Epub 2021 Jan 21.

Department of Pharmacology, Physiology & Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey 07101

Transient receptor potential melastatin 3 (TRPM3) is a heat-activated ion channel in primary sensory neurons of the dorsal root ganglia (DRGs). Pharmacological and genetic studies implicated TRPM3 in various pain modalities, but TRPM3 inhibitors were not validated in TRPM3 mice. Here we tested two inhibitors of TRPM3 in male and female wild-type and TRPM3 mice in nerve injury-induced neuropathic pain. Read More

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Preventive procedure for stenosis after esophagojejunostomy using a circular stapler and transorally inserted anvil (OrVil™) following laparoscopic proximal gastrectomy and total gastrectomy involving reduction of anastomotic tension.

BMC Surg 2021 Jan 21;21(1):47. Epub 2021 Jan 21.

Department of Gastroenterological and General Surgery, Tokai University Hachioji Hospital, 1838 Ishikawa-machi, Hachioji, Tokyo, 192-0032, Japan.

Background: Recently, due to increasing reports of stenosis after esophagojejunostomy created using circular staplers and a transorally inserted anvil (OrVil™) following laparoscopic proximal gastrectomy (LPG) and total gastrectomy (LTG), linear staplers are being used instead. We investigated our preventive procedure for esophagojejunostomy stenosis following use of circular staplers.

Methods: Since the anastomotic stenosis is considered to be mainly caused by tension in the esophageal and jejunal stumps at the anastomotic site, we have been performing procedures to relieve this tension, by cutting off the rubber band and pushing the shaft of the circular stapler toward the esophageal side, since July 2015. Read More

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January 2021

Long-term outcomes after phalangeal distraction lengthening in patients with constriction band syndrome.

J Plast Surg Hand Surg 2021 Jan 20:1-5. Epub 2021 Jan 20.

Departments of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.

We investigated the long-term post-operative outcomes, more than 10 years after surgery, of distraction lengthening of phalanges in patients with congenital constriction band syndrome. Five shortened digits of two patients with congenital constriction band syndrome underwent distraction lengthening of the proximal phalanges using external fixator for the reconstruction of grasp and pinch at age of 53 and 41 months. The post-operative followed-up was 126 and 124 months. Read More

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January 2021

Proximal Aortic Coverage and Clinical Results of the Endovascular Repair of Juxta-/Para-renal and Type IV Thoracoabdominal Aneurysm with Custom-made Fenestrated Endografts.

Ann Vasc Surg 2021 May 4;73:397-406. Epub 2021 Jan 4.

Vascular Surgery, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy.

Background: Juxta-renal (JAAA)/para-renal (PAAA) and type IV-thoracoabdominal (TAAA) aneurysms can be repaired by custom-made fenestrated endografts (CM-FEVAR). Differently from open repair, a relatively long segment of healthy proximal aorta needs to be covered to achieve a durable sealing, and this may be considered a disadvantage of the endovascular approach. We aimed to quantify the additional proximal aortic coverage in JAAAs, PAAAs, and type-IV TAAAs treated with CM-FEVAR and to evaluate its impact on early/follow-up clinical outcomes. Read More

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Open Surgical Repair for a Giant Common Hepatic Artery Aneurysm with Difficulty in Proximal Arterial Clamping: A Case Report.

Ann Vasc Dis 2020 Dec;13(4):430-433

Department of Cardiovascular Surgery, Dokkyo Medical University Saitama Medical Center, Koshigaya, Saitama, Japan.

Hepatic artery aneurysm has been considered as a rare, life-threatening disease. In this study, we report on a patient requiring surgical treatment for a giant hepatic artery aneurysm by aneurysmectomy without revascularization. A 70-year-old woman who complained of epigastric pain was referred to our hospital. Read More

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December 2020

Wingspan Stenting for Symptomatic Severe In-Stent Stenosis of a Closed-Cell Stent after Stent-Assisted Coiling of a Ruptured Intracranial Aneurysm.

Yonsei Med J 2021 Jan;62(1):91-94

Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea.

We report the 3-year follow-up result of Wingspan intracranial stenting for symptomatic severe in-stent stenosis after stent-assisted coiling (SAC) for a ruptured left distal internal carotid artery (ICA) aneurysm. A middle-aged male patient visited our hospital for in-stent stenosis of a stent that was placed to treat a ruptured ICA aneurysm. Routine follow-up cerebral angiography, 1 year after SAC, showed in-stent stenosis around the distal markers of the inserted stent at the left M1 proximal segment. Read More

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January 2021

Kayexalate-induced colitis and rectal stricture.

BMJ Case Rep 2020 Dec 13;13(12). Epub 2020 Dec 13.

Gastroenterology, Dayton VA Medical Center, Dayton, Ohio, USA.

A 57-year-old man underwent emergency laparoscopic loop colostomy for acute recto-sigmoid obstruction. He was hospitalised 2 months previously, at another facility for diabetic ketoacidosis (DKA) and hyperkalaemia. He had no gastrointestinal symptoms prior to the hospitalisation. Read More

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December 2020

Quantification of gastric sleeve stenosis using endoscopic parameters and image analysis.

Gastrointest Endosc 2021 06 13;93(6):1344-1348. Epub 2020 Dec 13.

Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan, USA; Department of Surgery, University of Michigan, Ann Arbor, Michigan, USA.

Background And Aims: Sleeve gastrectomy has quickly become the most commonly performed bariatric surgery. In light of its increasing popularity, the prevalence of gastric sleeve stenosis (GSS) continues to rise. Management with serial pneumatic dilation is highly successful but underused because of a lack of quantitative diagnostic criteria. Read More

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Predictors of Occlusion of Hepatic Blood Vessels after Irreversible Electroporation of Liver Tumors.

J Vasc Interv Radiol 2020 12 23;31(12):2033-2042.e1. Epub 2020 Oct 23.

Department of Diagnostic and Interventional Radiology, RWTH Aachen University Hospital, Aachen, Germany.

Purpose: To examine predictors of midterm occlusion in portal and hepatic veins within or adjacent to the ablation zone after irreversible electroporation (IRE) of liver tumors.

Materials And Methods: This retrospective cohort analysis included 39 patients who underwent CT-guided IRE of liver tumors. Vessels within or adjacent to the ablation zone were identified on CT images acquired immediately after the procedure, and the positional relationships with the ablation zone (within/adjacent), locations (proximal/distal), and diameters (< 4 mm or ≥ 4 mm) were evaluated. Read More

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December 2020