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Superior mesenteric artery(SMA)

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https://www.readbyqxmd.com/read/28318183/clinico-radiological-correlation-of-nutcracker-syndrome-a-single-centre-experience
#1
Aysel Taktak, Tulin Hakan Demirkan, Banu Acar, Gökçe Gu R, Adem Köksoy, Nermin Uncu, Fatma Ş Çaycı, Nilgu N Çakar
The term nutcracker syndrome (NS) refers to the compression of left renal vein between the aorta and the superior mesenteric artery (SMA) causing renal venous hypertension. The symptoms vary from asymptomatic hematuria to severe pelvic congestion. The purpose of this study is to evaluate the clinical characteristics of patients with NS and the correlation between clinical and laboratory findings with Doppler sonographic measurements. Sixty-three patients were evaluated (19 boys and 44 girls) since January 2004 to January 2014...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28315190/posterior-superior-mesenteric-artery-sma-first-approach-vs-standard-pancreaticoduodenectomy-in-patients-with-resectable-periampullary-cancers-a-prospective-comparison-focusing-on-circumferential-resection-margins
#2
Sujoy Pal, Joseph George, Anand Narayan Singh, Sandeep Mathur, Nihar Ranjan Dash, Pramod Garg, Peush Sahni, T K Chattopadhyay
BACKGROUND: The 'SMA-first' (P-SMA) pancreatoduodenectomy (PD) allows dissection directly on the right lateral aspect of superior mesenteric artery (SMA) which may decrease circumferential resection margin (CRM) positivity. This comparative study between standard PD (sPD) and P-SMA approach was planned focusing on CRM involvement. METHODS: This was a prospective study comparing consecutive patients with resectable periampullary cancers (PACA) undergoing PD using the standard or P-SMA approach...
March 18, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/28301853/chronic-mesenteric-ischemia-patient-outcomes-using-open-surgical-revascularization
#3
Markus U Wagenhäuser, Yvonne K Meyer-Janiszewski, Philip Dueppers, Joshua M Spin, Nikolaos Floros, Hubert Schelzig, Mansur Duran
BACKGROUND: Chronic mesenteric ischemia (CMI) is a rare disease. Open treatment (OT) remains a valuable treatment option. We analyzed patient outcomes after OT and investigated health-related quality of life (HRQoL). METHODS: Data were analyzed retrospectively. The investigation period was from January 1, 2001, to December 31, 2014. We investigated mortality and patency rates using Kaplan-Meier analysis. HRQoL was measured using a 36-item health survey. Various statistical methods were employed...
March 17, 2017: Digestive Surgery
https://www.readbyqxmd.com/read/28298945/doppler-ultrasound-assessment-of-the-splanchnic-circulation-in-preterms-with-neonatal-sepsis-at-risk-for-necrotizing-enterocolitis
#4
Rania H Hashem, Yasmeen A Mansi, Nehal S Almasah, Shereen Abdelghaffar
OBJECTIVE: To evaluate the role of Doppler ultrasonography in the assessment of splanchnic circulation's hemodynamic changes in septic preterms at risk of necrotizing enterocolitis. METHODS: A total of 51 septic preterms were divided into two groups: 25 preterms with clinical signs of necrotizing enterocolitis (NEC) and 26 preterms with no clinical signs of NEC. Both groups were assessed with Doppler ultrasonography of the celiac and superior mesenteric arteries, and each septic preterm's peak systolic velocity (PSV), end-diastolic velocity (EDV), resistivity index (RI), and pulsatility index (PI) was calculated and recorded...
March 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28258015/influence-of-anatomic-angulations-in-chimney-and-fenestrated-endovascular-aneurysm-repair
#5
Caroline Caradu, Xavier Bérard, Dominique Midy, Eric Ducasse
BACKGROUND: Fenestrated (F-) endovascular aneurysm repair (EVAR)'s lack of widespread availability encouraged alternative strategies. Chimney graft (CG)-EVAR has spread when costs, manufacturing delays or anatomy preclude F-EVAR. Our objective was to evaluate CG-EVAR and F-EVAR's outcomes depending on the angulation of target renal arteries and hostility of iliac accesses to determine the potential impact of a choice made between the two techniques based upon preoperative anatomic criteria...
February 28, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28254161/long-term-results-of-endovascular-treatment-of-atherosclerotic-stenoses-or-occlusions-of-the-coeliac-and-superior-mesenteric-artery-in-patients-with-mesenteric-ischaemia
#6
T Bulut, R Oosterhof-Berktas, R H Geelkerken, M Brusse-Keizer, E J Stassen, J J Kolkman
INTRODUCTION: Over the past decade, primary percutaneous mesenteric artery stenting (PMAS) has become an alternative to open revascularisation for treatment of mesenteric ischaemia. Institutes have presented favourable short-term outcomes after PMAS, but there is a lack of data on long-term stent patency. METHODS: One hundred and forty-one patients treated by PMAS for acute and chronic mesenteric ischaemia over an 8 year period were studied. Anatomical success was assessed by duplex ultrasound and/or CT angiography...
February 18, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28246964/preoperative-radiographic-vascular-involvement-score-predicts-the-prognosis-of-resected-pancreatic-head-adenocarcinoma
#7
Shunsuke Onoe, Yuji Kaneoka, Atsuyuki Maeda, Yuichi Takayama, Yasuyuki Fukami
BACKGROUND: Operative indications for pancreatic head adenocarcinoma (PHC) with vascular invasion remain unclear. We aimed to develop a new prognostic model focusing on preoperative portal/superior mesenteric vein (PV/SMV) and superior mesenteric artery (SMA) invasiveness. METHODS: From 2005 to 2012, 103 patients underwent pancreatoduodenectomy for PHC. The CT findings for both PV/SMV and SMA invasion were evaluated separately [PV/SMV, none (score 0), unilateral narrowing (score 1), bilateral narrowing/stenosis (score 2); SMA, none or <90° (score 0), ≥90° (score 3)]...
March 1, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28243813/systematic-review-the-impact-of-exercise-on-mesenteric-blood-flow-and-its-implication-for-preoperative-rehabilitation
#8
REVIEW
K A Knight, S J Moug, M A West
BACKGROUND: Exercise in the preoperative period, or prehabilitation, continues to evolve as an important tool in optimising patients awaiting major intra-abdominal surgery. It has been shown to reduce rates of post-operative morbidity and length of hospital stay. The mechanism by which this is achieved remains poorly understood. Adaptations in mesenteric flow in response to exercise may play a role in improving post-operative recovery by reducing rates of ileus and anastomotic leak. AIMS: To systematically review the existing literature to clarify the impact of exercise on mesenteric arterial blood flow using Doppler ultrasound...
February 27, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28238921/geometric-alteration-of-renal-arteries-after-fenestrated-grafting-and-the-impact-on-renal-function
#9
Jiale Ou, Yiu-Che Chan, Crystal Yin-Tung Chan, Stephen W K Cheng
OBJECTIVE: This study aims to investigate the degree of geometric change on renal arteries and its impact on renal function after fenestrated endovascular aortic repair (fEVAR). METHODS: Twenty-five patients with fEVAR were included. There were 47 renal arteries target vessels and 43 of these (22 left and 21 right vessels) stented successfully. Their preoperative and first postoperative follow-up computed tomography (CT) images were reconstructed using the Aquarius workstation (TeraRecon, San Mateo, CA, USA)...
February 24, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28228071/a-rat-model-of-ischemic-enteritis-pathogenic-importance-of-enterobacteria-inos-no-and-cox-2-pge2
#10
Koji Takeuchi, Yoshino Komatsu, Yuka Nakamori, Tohru Kotani
BACKGROUND: We introduced a rat model of ischemic enteritis and investigated the roles of enterobacteria, nitric oxide (NO), and prostaglandins (PGs) in its pathogenesis. METHODS: Male rats were used after 18 h of fasting. Ischemic enteritis was induced by partial ligation of the superior mesenteric artery (SMA). Under ether anesthesia, SMA was isolated, and a stenosis was made by placing a needle (23 guage) on the vessel and ligating both the vessel and needle, and then a needle was removed from the ligature...
February 20, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28203123/spontaneous-isolated-superior-mesenteric-artery-dissection
#11
Anand Nath, Sayali Yewale, Mohammad Kousha
A true isolated superior mesenteric artery (SMA) dissection is a rare occurrence. The increasing use of diagnostic imaging studies has resulted in this rare disease being more recognized. A 68-year-old Caucasian female presented with sharp upper abdominal pain. Computed tomography (CT) of the abdomen showed dissection with thrombosis in the proximal SMA. Conservative management with bowel rest, blood pressure control, and anticoagulation relieved her symptoms. Follow-up CT showed stable dissection. Physicians should consider the diagnosis of isolated spontaneous SMA dissection after excluding more common causes...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/28188511/non-occlusive-mesenteric-ischemia-localized-in-the-transverse-colon-a-case-report
#12
Koji Murono, Soichiro Ishihara, Kazushige Kawai, Manabu Kaneko, Kazuhito Sasaki, Koji Yasuda, Kensuke Otani, Takeshi Nishikawa, Toshiaki Tanaka, Tomomichi Kiyomatsu, Keisuke Hata, Hiroaki Nozawa, Akimasa Hayashi, Tetsuo Ushiku, Masashi Fukayama, Toshiaki Watanabe
BACKGROUND: Non-occlusive mesenteric ischemia (NOMI) is ischemia of the mesentery that is caused by hypoperfusion or vasospasm without any thrombosis. NOMI is difficult to diagnose by physical examination alone. Although angiographic examination of the superior mesenteric artery (SMA) is the usual diagnostic method used, it is an invasive examination. Usually, a long range of the bowel becomes discontinuously necrotic in NOMI. Here, we report a rare case of NOMI localized in the transverse colon that was diagnosed by computed tomography (CT) angiography which is a minimally invasive examination...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28167239/6-gingerol-protects-intestinal-barrier-from-ischemia-reperfusion-induced-damage-via-inhibition-of-p38-mapk-to-nf-%C3%AE%C2%BAb-signalling
#13
Yanli Li, Bin Xu, Ming Xu, Dapeng Chen, Yongjian Xiong, Mengqiao Lian, Yuchao Sun, Zeyao Tang, Li Wang, Chunling Jiang, Yuan Lin
Intestinal ischemia reperfusion (I/R) injury caused by severe trauma, intestinal obstruction, and operation is one of the tough challenges in clinic. 6-Gingerol (6G), a main active ingredient of ginger, is found to have anti-microbial, anti-inflammatory, anti-oxidative, and anti-cancer activities. The present study was designed to characterize the potential protective effects of 6G on rat intestinal I/R injury and reveal the correlated mechanisms. Rat intestinal I/R model was established with clamping the superior mesenteric artery (SMA) and 6G was intragastrically administered for three consecutive days before I/R injury...
February 4, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28150314/the-upturned-superior-mesenteric-artery-sign-for-first-trimester-detection-of-congenital-diaphragmatic-hernia-and-omphalocele
#14
Ravi Selvaraj Lakshmy, Joy Agnees, Nity Rose
OBJECTIVES: The aim of this study was to follow the course of the superior mesenteric artery (SMA) in first-trimester fetuses to predict the location of the small bowel. Its abnormal course aids in early detection of congenital diaphragmatic hernia (CDH) and assessment of the contents of omphalocele. METHODS: The SMA can be easily identified in a sagittal section of the fetus by using color Doppler sonography at the 11- to 14-week scan, and normally, it has a downward course caudally to supply the intestines...
March 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28133093/-long-term-survival-after-locally-advanced-pancreatic-ductal-adenocarcinoma-treated-with-multidisciplinary-therapy-a-case-report
#15
Goro Ueno, Daisaku Yamada, Hidetoshi Eguchi, Tadafumi Asaoka, Takehiro Noda, Hiroshi Wada, Koichi Kawamoto, Kunihito Goto, Masaki Mori, Yuichiro Doki
A 60-year-old man visited a hospital with concerns about his physical health, including weight loss, thirst, and polyuria. He was diagnosed with acute onset of diabetes, and a pancreatic head tumor was observed on imaging studies. Computed tomography(CT)indicated that the tumor infiltrated the surrounding major vessels, portal vein(PV, 360 degrees), and superior mesenteric artery(SMA, <180 degrees). Endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)was performed, and he was diagnosed with a borderline resectable(BR)clinical Stage IV a pancreatic ductal adenocarcinoma (PDAC)...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28132039/hepatic-arterial-anatomy-variations-in-patients-with-hepatocellular-carcinoma-evaluated-by-computed-tomography-angiography
#16
N Onashvili, M Kutateladze, N Tugushi, I Avazashvili, M Mizandari
Hepatocellular carcinoma (HCC) is the most common primary liver malignancy and one of the major reasons for performing percutaneous endovascular procedures or liver surgery. Hepatic arterial anatomy is of major importance in performing these procedures on the liver. The aim of our study was to estimate the prevalence of various hepatic arterial variants in HCC patients. 78 patients were included in the study. Abdominal multiphase Computed Tomography scans of all patients have been assessed for presence of the hepatic arterial supply anatomical variations...
December 2016: Georgian Medical News
https://www.readbyqxmd.com/read/28126700/small-bowel-volvulus-in-pregnancy-with-associated-superior-mesenteric-artery-occlusion
#17
Yonah B Esterson, Robert Villani, Ronald A Dela Cruz, Barak Friedman, Gregory M Grimaldi
Here we report the case of a pregnant 28-year-old who presented with acute upper abdominal pain. CT demonstrated midgut volvulus with short segment occlusion of the superior mesenteric artery (SMA). Emergent detorsion of the small bowel was performed, at which time underlying intestinal malrotation was discovered. Following detorsion, the SMA had a bounding pulse and did not require thrombectomy or revascularization. Fewer than 25 cases of midgut volvulus during pregnancy have been reported over the past 20years...
January 16, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28124311/color-doppler-an-effective-tool-for-diagnosing-midgut-volvulus-with-malrotation
#18
Bindey Kumar, Manish Kumar, Prem Kumar, Amit Kumar Sinha, Utpal Anand, Anil Kumar
BACKGROUND: Malrotation with midgut volvulus is a common surgical emergency in children. A diagnostic tool for malrotation with characteristics ideal in emergency settings such as non-invasiveness and rapidity remains a keenly debated issue among surgeons and radiologists alike. METHODS: Fifty-two pediatric patients of suspected malrotation with midgut volvulus were studied between 1998 and 2016. All patients underwent plain abdominal X-ray and Color Doppler; contrast upper gastrointestinal (GI) studywas done in some patients...
January 2017: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/28124075/a-strange-case-of-superior-mesenteric-venous-collar-around-the-superior-mesenteric-artery
#19
Satheesha B Nayak, Snigdha Mishra, Bincy M George
During our dissection classes, we saw a venous collar formed around the superior mesenteric artery (SMA) by the jejunal tributaries of superior mesenteric vein in an adult male cadaver. The jejunal tributaries united themselves to form two common jejunal veins. Upper common jejunal vein crossed superficial to SMA and opened into the SMV in front of the uncinate process of pancreas. The inferior common jejunal vein crossed behind the SMA from left to right and opened into the SMV, 4 cm below this level. A communicating vein connected the two common jejunal veins with each other...
January 25, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28118930/mesenchymal-stem-cells-increase-antioxidant-capacity-in-intestinal-ischemia-reperfusion-damage
#20
M Inan, E Bakar, A Cerkezkayabekir, F Sanal, E Ulucam, C Subaşı, E Karaöz
BACKGROUND: Mesenchymal stem cells (MSCs) may have beneficial effects in reversing intestinal damage resulting from circulatory disorders. The hypothesis of this study is that MSCs increase antioxidant capacity of small bowel tissue following intestinal ischemia reperfusion (I/R) damage. METHODS: A total of 100 rats were used for the control group and three experimental groups, as follows: the sham control, local MSC, and systemic MSC groups. Each group consisted of 10 animals on days 1, 4, and 7 of the experiment...
January 2, 2017: Journal of Pediatric Surgery
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