Macular Changes Caused by Occlusion of a Minute Venous Branch

1976 ◽  
Vol 173 (3-4) ◽  
pp. 200-206 ◽  
Author(s):  
J.G.A. Notting ◽  
P.J.P. van der Werf
Keyword(s):  
Venous Branch

scholarly journals Role of CT in the Assessment of Muscular Venous Branch Invasion in Patients With Renal Cell Carcinoma

2013 ◽  
Vol 201 (4) ◽  
pp. 847-852 ◽  
Author(s):  
Christoph A. Karlo ◽  
Olivio F. Donati ◽  
Chiara Marigliano ◽  
Satish K. Tickoo ◽  
Hedvig Hricak ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Venous Branch

An eighth note

Perfusion ◽  
2021 ◽  
pp. 026765912110409
Author(s):  
Meng-Rong Tsai ◽  
Chiu-Yang Lee ◽  
Chih-Yu Yang ◽  
Der-Cherng Tarng
Keyword(s):  
Drainage System ◽  
Venous Drainage ◽  
Transluminal Angioplasty ◽  
Chronic Hemodialysis ◽  
Arteriovenous Anastomosis ◽  
Stenotic Lesion ◽  
Arterial Inflow ◽  
Angiographic Examination ◽  
Percutaneous Transluminal ◽  
Venous Branch

Venous stenosis is the most common cause of arteriovenous fistula (AVF) failure in hemodialysis patients. For patients with AVF stenosis, the pressure over the antecedent part of the AVF stenotic lesion will increase if arterial inflow is sufficient. We report a chronic hemodialysis patient who received an angiographic examination for the juxta-anastomosis stenosis of his AVF. A unique feature of a collateral venous branch antecedent to the stenotic lesion was noted, resembling a musical sign as the “eighth note.” After percutaneous transluminal angioplasty, the eighth note attenuated markedly at once. Of note, the eighth note sign is not seen frequently, and thus we postulate that the formation of an eighth note sign on the radiocephalic fistula should fulfill the following requirements, including a sufficient arterial inflow, an adjacent collateral branch close enough to the arteriovenous anastomosis, a severe juxta-anastomotic stenotic lesion, and an intact ulnar venous drainage system.

scholarly journals PREOPERATIVE TRANSCATHETER EMBOLIZATION OF THE PORTAL VENOUS BRANCH FOR PATIENTS RECEIVING EXTENDED LOBECTOMY DUE TO THE BILE DUCT CARCINOMA

1984 ◽  
Vol 45 (12) ◽  
pp. 1558-1564 ◽  
Author(s):  
Masatoshi MAKUUCHI ◽  
Kenichi TAKAYASU ◽  
Tetsuo TAKUMA ◽  
Susumu YAMAZAKI ◽  
Hiroshi HASEGAWA ◽  
...  
Keyword(s):  
Bile Duct ◽  
Bile Duct Carcinoma ◽  
Transcatheter Embolization ◽  
Duct Carcinoma ◽  
Venous Branch

Rapid Onset of Severe Twin–Twin Transfusion Syndrome Caused by Placental Venous Thrombosis

2002 ◽  
Vol 5 (3) ◽  
pp. 310-314 ◽  
Author(s):  
Peter G.J. Nikkels ◽  
Martin J.C. van Gemert ◽  
Krystyna M. Sollie-Szarynska ◽  
Harry Molendijk ◽  
Bert Timmer ◽  
...  
Keyword(s):  
Small Intestine ◽  
Cesarean Section ◽  
Mesenteric Artery ◽  
Twin Pregnancy ◽  
Factor V Leiden ◽  
Rapid Onset ◽  
Factor V ◽  
Monochorionic Twin ◽  
Factors Associated ◽  
Venous Branch

We report a case of rapid onset of severe twin–twin transfusion syndrome (TTTS) at 25 weeks gestation in a monochorionic twin pregnancy that was uneventful before that time. Thrombosis of a main venous branch draining several arteriovenous (AV) anastomoses to the donor changed the previous hemodynamic balance that existed between multiple bidirectional AV anastomoses. The opposing AVs became hemodynamically uncompensated and, despite amnioreductions, severe TTTS developed. At 27 weeks a cesarean section was performed because of worsening cardiotocography parameters of both fetuses. Birth weights were 750 and 1840 g, and initial hemoglobin concentrations were 9.2 and 13.4 mmol/liter for donor and recipient, respectively. The recipient twin died 5 months later of an ischemic, necrotic, and perforated small intestine due to a throm-bosed superior mesenteric artery. The donor is well at 2.5 years. No abnormalities in several factors associated with thrombophilia, including factor V Leiden mutations, were found in the parents.

scholarly journals Periaortic venous necklace and renal right double arteries; Case report

2021 ◽  
pp. 312-316
Author(s):  
Petru Bordei ◽  
Constantin Rusali ◽  
Constantin Ionescu ◽  
Dragos Serban ◽  
Valeriu Ardeleanu
Keyword(s):  
Inferior Vena Cava ◽  
Renal Vein ◽  
Inferior Vena ◽  
Left Renal Vein ◽  
Vena Cava ◽  
Cross Sectional ◽  
Organic Sample ◽  
Cross Sectional Dimension ◽  
The Right ◽  
Venous Branch

The case was found on an organic sample consisting of the two kidneys with the renal pedicles and the corresponding segments of the abdominal aorta and inferior vena cava. From the inferior face of the left renal vein, on the lower side of the aorta, a venous branch with an upward path of 8.02 mm was detached, passing on the anterior face of the aorta, passing before its right side, in order to end on the left side of the inferior vena cava, 13.9 mm above the end of the left renal vein in the inferior vena cava, this branch thus describing a periaortic ring (necklace), in which on the left side of the aorta the inferior adrenal vein ends. The periaortic ring (necklace) had a cross-sectional dimension of 3.2 mm and a vertical one of 1.7 cm. On the right side of the aorta, a 2.9 mm venous branch came out of the renal vein, ending on the left side of the inferior vena cava, 1.2 mm above the end of the left renal vein. At the level of the right kidney there were two renal arteries, superior and inferior. Between the two arteries there was an interval of 5.1 cm.

Benefits of Intraoperative Digital Subtraction Angiography in Primary Arteriovenous Fistula Creation

2009 ◽  
Vol 10 (3) ◽  
pp. 167-173 ◽  
Author(s):  
Rolf Förster ◽  
Johannes Scholz
Keyword(s):  
Soft Tissue ◽  
Vascular Surgery ◽  
Arteriovenous Fistula ◽  
Digital Subtraction Angiography ◽  
Patency Rate ◽  
Digital Subtraction ◽  
Routine Procedure ◽  
Arteriovenous Anastomosis ◽  
A Prospective Study ◽  
Venous Branch

Digital subtraction angiography (DSA) is an ideal procedure for improving vascular surgery results, not yet in use for arteriovenous fistula (AVF) creation. In a prospective study, the practicability and benefits of intraoperative completion DSA (CDSA) for this purpose were investigated. When the arteriovenous anastomosis was completed and clinically judged as running, DSA via percutaneous or open-site puncture was conducted. Findings and consequences were prospectively documented. From July 2005 to September 2006 a primary AVF was created in 54 patients. Fifty of these could be included in the study (68, 39–91 yrs). In 44 a forearm fistula, and in six patients an elbow fistula was newly created. In two cases we were unable to insert a cannula into the A. brachialis (study escape). In the remaining 48 cases, CDSA visualized afferent artery, anastomosis and draining vein. No complications occurred associated with CDSA; 3.5, 2–12 ml, contrast agent were required per patient. In 13 cases, CDSA revealed problems with the AVF that could be corrected immediately: the vein was freed from restraining soft tissue (n=4), a stealing venous branch was ligated (n=6), transluminal thrombectomy was conducted (n=1) or anastomosis was newly created (n=3). AVF could be successfully created proven by ongoing dialysis in 30 cases, and in eight cases as demonstrated by clinical and sonographic evaluations, resulting in a primary 1-yr patency rate of 79.2%. CDSA in AVF surgery is practicable and reveals conditions that can be corrected immediately, thus improving surgical outcome. Long since standard in other areas of vascular surgery, CDSA should become a routine procedure in AVF creation.

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