Open repair of symptomatic superior mesenteric artery dissection.
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ABSTRACT:
SUBMITTER: Cirillo-Penn NC
PROVIDER: S-EPMC10448315 | biostudies-literature | 2023 Sep
REPOSITORIES: biostudies-literature
Publications
Open repair of symptomatic superior mesenteric artery dissection.
Cirillo-Penn Nolan C NC Lima Guilherme B B GBB Colglazier Jill J JJ Mendes Bernardo C BC
Journal of vascular surgery cases and innovative techniques 20230704 3
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Project description:Both spontaneous superior mesenteric artery dissection (SMAD) and spontaneous renal artery dissection (SRAD) are very rare conditions. Their etiologies and natural histories are not precisely defined, but they are thought to be associated with underlying conditions. In this report, we describe an extremely rare case of SRAD in a man who had a history of spontaneous SMAD. We successfully treated SRAD with endovascular intervention. Isolated spontaneous SMAD and SRAD are both rare conditions. Their optimal treatment has not been established due to their rare entities, but endovascular treatment is a good option because it can prevent both advancement of infarction and renovascular hypertension, and it has become safer as device technology has improved. Patients with isolated visceral artery dissection should be carefully followed up.
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Project description:The aim of this study was to analyze the superior mesenteric artery (SMA) remodeling after initial conservative or endovascular treatment with a standardized definition and midterm outcomes in patients with spontaneous isolated dissection of the superior mesenteric artery (SIDSMA). This retrospective study enrolled patients with SIDSMA from January 2007 to August 2019. All patients were treated initially with conservative treatment. If they failed the medical treatment, they were converted to interventional treatment. The morphological endpoint was determined by the standardized SMA remodeling, and the clinical endpoints were determined by the in-hospital mortality, hospital stay, and the bowel-related mid-term mortality. A total of 34 consecutive patients with SIDSMA were identified. Twenty-three (67.6%) and eleven (33.4%) patients underwent conservative and interventional treatments, respectively. Clinical features and morphologic changes on CTA were available in 25 (73.5%) patients during the median follow-up of 23.3 months. Standardized SMA remodeling was significantly (p < 0.05) better in patients undergoing endovascular stenting, especially in patients with Yun's IIb classification. There was no mesenteric ischemia or SMA aneurysm during follow-up period. Patients with SIDSMA can be treated safely with initial conservative treatment. However, significant portions of patients will require endovascular intervention due to the persistent symptoms. Clinically endovascular stenting could be performed successfully, and SMA remodeling was satisfactory during the mid-term follow-up.
| S-EPMC8777763 | biostudies-literature
Project description:PurposeSpontaneous isolated dissection of the celiac artery (SID-CA) and superior mesenteric artery (SID-SMA) are rare vascular diseases with similar presentation, yet comparative studies have not been reported. In this study, we compared their characteristics with the aim of providing insights into their etiology.Materials and methodsPatients diagnosed with symptomatic SID-CA and SIDSMA between July 2009 and December 2018 were included. Demographics, clinical presentation, radiologic findings, treatment strategies, and outcomes were analyzed.ResultsTwenty-one patients with SID-CA and 40 patients with SID-SMA were compared. Demographics and initial abdominal pain characteristics were similar, but pain severity was significantly higher and associated mean fasting time was significantly longer in patients with SID-CA than in those with SID-SMA (fasting time 3.2 vs 2.1 days, P=0.001). Most patients were successfully treated conservatively without recurrent pain or aneurysmal dilatation, but 33.3% patients with SID-CA and 17.5% with SID-SMA required endovascular intervention. More favorable remodeling in terms of dissection regression on follow-up computed tomography was found after stenting, where patients with SID-CA showed better remodeling than those with SID-SMA. The overall median follow-up period was 22-31 months, while for patients with stent insertion, it was 55-77 months, and no stent occlusions were found during this period.ConclusionPatients with SID-CA presented with severer and longer-duration abdominal pain than those with SID-SMA. Stenting in both groups showed good long-term patency and favorable remodeling, with a higher regression rate for SIDCA. Based on our results, patients with SID-CA may benefit more from active endovascular intervention.
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Project description:We report the clinical outcomes of patients with spontaneous isolated dissection of the superior mesenteric artery (SIDSMA) who were treated conservatively.A retrospective review was performed in 14 patients from 2006 to 2016 with SIDSMA. Their clinical features and computed tomographic angiography (CTA) characteristics, treatment methods, and clinical outcomes were analyzed. The mean age was 53.6 (range, 41-73) years, and the mean follow-up duration was 20.6 (range, 1-54) months. Conservative management was the primary treatment if no bowel ischemia or arterial rupture was noted.The mean initial abdominal visual analog pain score was 7 (range, 5-9) in seven patients. The mean total duration of abdominal pain was 10.2 days (range, 2-42 days) in 10 patients. The mean percentage stenosis of the dissected SMA at the initial presentation was 78.8% in 14 patients. Complete obstruction of the SMA at the initial presentation was evident in 4 of the 14 patients (28.6%). Conservative management was successful in all 14 patients. None of the 14 patients developed bowel ischemia or an infarction. Abdominal pain did not recur in any patient during follow-up (mean, 20.6 months; range, 1-54 months).Conservative management was successful for all SIDSMA patients, even those with severe compression of the true lumen or complete obstruction of the dissected SMA.
| S-EPMC5534304 | biostudies-other
Project description:PurposeThe purpose of this study is to evaluate the efficacy of laparoscopic pancreaticoduodenectomy (LPD) with superior mesenteric artery (SMA) left posterior first approach and circumferential lymphadenectomy with total meso-pancreas (MP) dissection for periampullary malignancies.Methods31 patients who underwent LPD with left posterior SMA first-approach and circumferential lymphadenectomy with total MP dissection between September 2021 and September 2023. General characteristics, operative techniques, short-term outcomes and pathological results were prospectively evaluated.ResultsThe mean operation time and SMA first-approach time were 441.9 ± 73.7 min and 99.9 ± 27.7 min, respectively. The median intraoperative blood loss was 143 ml (range: 50-1500 ml). The median number of total LNs and left-sided SMA LNs harvested were 32,7 ± 13 (16-74) and 7,4 ± 6 (range: 3-30), respectively. The rate of metastatic left-sided SMA LNs and meso-pancreas were 25.8% and 22.6%, respectively. 22.6% of patients had pancreatic fistula, but mostly in grade A, with only one case that required conversion. Only one case developed postoperative refractory diarrhea. The mean postoperative hospital stay was 14.1 days. No 90-day mortality was reported.ConclusionLPD with left posterior SMA first-approach and circumferential lymphadenectomy with total MP dissection was safe and effective with favorable short-term outcomes.
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Project description:An isolated superior mesenteric artery (SMA) dissection (ISMAD) is extremely rare among visceral artery dissections. Its diagnosis is made by abdominal contrast CT scan which shows SMA occlusion partially or completely. The ISMAD is classified into 6 types: type I-V has partial occlusion and treated medically using antiplatelets or anticoagulants. On the other hand, type VI has complete occlusion and must be treated by urgent surgical operation. We present a 67-year-old female who presented with sudden onset abdominal pain and melena. An urgent contrast CT revealed type VI ISMAD. She underwent 3 staged operations as follows: (1) first, as laparotomy showed pale color in almost the extensive length of the small intestine, arterial bypassing of SMA was undertaken using SMA to the right common iliac artery bypass; (2) as the second-look operation on the next day, the terminal ileum was resected, and the remaining small intestine was able to be preserved. However, when the abdomen was tried to be closed, systemic blood pressure decreased to pre-shock condition, so the abdominal wall was closed at skin level with silastic sheet. (3) As the third-look operation on the 7th day, ileostomy was created, and the abdominal wall was safely closed. The postoperative course was uneventful. This case study shows that SMA grafting and staged operations might be an option to preserve the length of the small intestine when ISMAD is diagnosed as type VI.
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Project description:The superior mesenteric artery (SMA), originating from the abdominal aorta, provides blood supply for the spleen, pancreas, intestine, and part of the colon. Here, we present a protocol for studying the SMA in the same mouse by combining non-invasive micro-ultrasound imaging and SMA dissection. We then detail procedures for tissue preparation, sectioning, and histological analysis. By allowing accurate identification of the SMA by ultrasound and anatomical dissection, this protocol can provide insights into SMA-related diseases in animal models.
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Project description:Key clinical messageThe robotic modified Strong procedure is a safe and effective approach for surgical management of superior mesenteric artery syndrome in properly selected patients.AbstractSuperior mesenteric artery syndrome is a rare syndrome of small bowel obstruction resulting from vascular compression of the duodenum. Here we present our modification of a robotic Strong procedure for the surgical management of SMA syndrome. This procedure is a safe and effective approach for management in properly selected patients.
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Project description:The superior mesenteric artery (SMA) is one of the visceral branches of the abdominal aorta. It has multiple branches to supply blood and nutrition to the intestinal segment, and these form an anastomosis with each other. SMA injuries are usually classified as major visceral artery injuries, and have an incidence of <1%. The clinical manifestations of patients with SMA injuries include intra-abdominal bleeding and peritoneal irritation. The compromised blood supply can lead to intestinal ischemia and perforation. These injuries are often not diagnosed in time and have significant mortality rates of 25%-68% due to the lack of specific features (Maithel et al., 2020). Not only that, but patients with less severe trauma or no visible damage on initial examination may still have clinically significant intra-abdominal injuries (Nishijima et al., 2012). Emergency departments often encounter multiple cases that require urgent diagnosis and treatment (Li et al., 2021; Zhang et al., 2021; Zhou et al., 2021), and therefore, it is imperative to diagnose and manage these rare injuries expeditiously.
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