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  • Title: Five-Year Results of Spontaneous Isolated Superior Mesenteric Artery Dissection from Two Teaching Hospitals in China.
    Author: Lian LS, Wu ZY, Zhang Z, Feng H, Li YJ.
    Journal: Ann Vasc Surg; 2023 May; 92():42-48. PubMed ID: 36736721.
    Abstract:
    BACKGROUND: To present 5-year results of management on spontaneous isolated superior mesenteric artery dissection (SISMAD) from 2 teaching hospitals in China. METHODS: The clinical data of 41 patients with SISMAD were retrospectively collected from 2 teaching hospitals between December 2016 and December 2021. Therapeutic methods mainly included open surgery, endovascular management, and conservative therapy. Patients' demographics, total number of WBC (White blood cell, WBC), the percentage of NEUT (Neutrophil), the level of CRP (C-reactive protein, CRP), duration of abdominal pain on admission, YOO classification of SISMAD, angle of superior mesenteric artery to abdominal aorta (ASA), length of hospital stays, and vascular remodeling rate of SMA between endovascular and conservative groups were analyzed. RESULTS: A total of 41 patients with SISMAD were finally included in this study. Their average age was 53.4 ± 7.1 years old, ranging from 35 to 68 years old. Among these patients, 1 patient suffered emergent open surgery because of the intestinal necrosis. The other 40 patients were treated conservatively at first, but 13 of them were transitioned into endovascular management due to persistent abdominal pain. Regarding the imaging analysis, IIS and IVS types of YOO classification were more in the endovascular group (13 patients) than the conservative group (27 patients). The length of hospital stays (P = 0.003) and the vascular remodeling rate of SMA were significantly different between 2 groups (P = 0.002), while the time of abdominal pain on admission, the infection markers (WBC, CRP, NEUT) and ASA were not significantly different between the 2 groups. CONCLUSIONS: In SISMAD, patients without any signs of peritonitis and intestinal necrosis may be treated conservatively firstly, and then transitioned into endovascular management if abdominal pain is not improved within 48 hr. IIS and IVS types of YOO classification should be alerted of this potential transition. But the optimal timing of transition required more clinical studies.
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