نتایج جستجو برای: shunts

تعداد نتایج: 3315  

2017
Xinghua Gu Qiuwang Zhang Hourong Sun Jianchun Fei Xiquan Zhang Michael J. Kutryk

Background Repeat surgery and the percutaneous approach (transcatheter closure (TCC)) have been used for the management of postoperative left-to-right shunts. In this study, we described our 15 years of experience in treating postoperative left-to-right shunts with these two approaches. Methods From February 2002 to February 2017, 50 patients with residual left-to-right shunts, following card...

2010
J. B. Lillegard A. M. Hanna T. J. McKenzie C. R. Moir M. B. Ishitani D. M. Nagorney

PURPOSE Review the safety and long-term success with portosystemic shunts in children at a single institution. METHODS An IRB-approved, retrospective chart review of all children ages 19 and undergoing surgical portosystemic shunt from January 1990-September 2008. RESULTS Ten patients were identified, 8 females and 2 males, with a mean age of 15 years (range 5-19 years). Primary diagnoses w...

Journal: :Circulation 1979
T D Fraker P J Harris V S Behar J A Kisslo

Two-dimensional echocardiography (2-D echo) was used with peripherally injected contrast material to detect interatrial shunts in 33 patients. Group 1 consisted of 11 patients having classic clinical findings of atrial septal defect. Group 2 consisted of 12 patients with problems requiring that atrial shunting be excluded. Group 3 (control group) consisted of 10 patients undergoing cardiac cath...

Journal: :Heart 2004
P T Wilmshurst M J Pearson S Nightingale K P Walsh W L Morrison

OBJECTIVE To determine whether smaller atrial shunts (large persistent foramen ovale (PFO) and small atrial septal defect (ASD)) are inherited and whether this has a role in the inheritance of migraine with aura. METHODS Contrast echocardiography was used to detect atrial shunts in 71 relatives of 20 probands with a significantly sized atrial shunt (large PFO or ASD). Four families with three...

Journal: :Pediatric blood & cancer 2014
Kim Kramer Mariel Smith Mark M Souweidane

BACKGROUND The use of Ommaya catheters or ventriculoperitoneal shunts with programmable valves (pVP-shunts) for intraventricular drug administration is increasingly more common. PROCEDURE We reviewed the safety and complication rate associated with ventricular access devices in patients receiving compartmental intraventricular radioimmunotherapy (cRIT). RESULTS One hundred fifty one patient...

2012
Andrew T. Lovering Randall D. Goodman

Ultrasound has become a valuable tool for making non-invasive physiological measurements that are clinically important, one of which is detection of anatomic shunts using saline contrast echocardiography. Right-to-left intrapulmonary and intracardiac shunts are clinically relevant for two reasons. First, they allow deoxygenated blood to mix with oxygenated blood, thereby reducing the overall ef...

Journal: :Science translational medicine 2012
Patrick A Murphy Tyson N Kim Gloria Lu Andrew W Bollen Chris B Schaffer Rong A Wang

Abnormally enlarged blood vessels underlie many life-threatening disorders including arteriovenous (AV) malformations (AVMs). The core defect in AVMs is high-flow AV shunts, which connect arteries directly to veins, "stealing" blood from capillaries. Here, we studied mouse brain AV shunts caused by up-regulation of Notch signaling in endothelial cells (ECs) through transgenic expression of cons...

Journal: :Turkish neurosurgery 2017
Idiris Altun Kasim Zafer Yuksel Tufan Mert

AIM To investigate whether programmable cerebrospinal fluid (CSF) shunts are influenced by exposure to the magnetic field and to compare the effects of magnetic field in 4 different brands of programmable CSF shunts. MATERIAL AND METHODS This experimental study was performed in the laboratory using a novel design of magnetic field. Four types of programmable CSF shunts (Miethke®, Medtronic®, ...

2016
Wenyan Song Dawei Zhao Hongjun Li Jinli Ding Ning He Yu Chen

BACKGROUND Hereditary hemorrhagic telangiectasia (HHT), also known as Osler-Weber-Rendu syndrome, is a rare autosomal dominant genetic vascular dysplasia. OBJECTIVES The aim is to characterize the liver involvement of HHT by multi-detector helical computed tomography. PATIENTS AND METHODS Through the use of multi-detector helical computed tomography, scan data derived from 12 cases of HHT w...

2013
Shinji Yamamoto Phyo Kim

Spinal arteriovenous shunts (AV shunts; including spinal AV fistulas and AV malforma‐ tions) are heterogeneous entities that can render devastating neurological sequelae by hemorrhage (hematomyelia, subarachnoid hemorrhage, and subdural/epidural hemato‐ ma), venous congestion, mass effect, and vascular steal [1-5]. These lesions have been challenging entities to treat because of their complicat...

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