Risk factors for ischemia/necrosis of the colonic stump after proctectomy and delayed coloanal anastomosis.

INTRODUCTION: Delayed coloanal anastomosis (DCAA) is a two-stage procedure. DCAA has been increasingly reused in recent years in the management of rectal cancer. Such increased use of DCAA has highlighted the complications associated with this procedure. We aimed to evaluate the risk and risk factors of ischemia/necrosis of the colonic stump between the two stages of DCAA. PATIENTS AND METHODS: All patients who underwent a proctectomy with a DCAA were included in this retrospective single-centre study from November 2012 to June 2022. Two groups of patients were defined: patients with a well vascularized colonic stump (well vascularized group) and those who experienced ischemia or necrosis of the colonic stump (ischemic group). The primary endpoint was the rate of ischemia or necrosis of the colonic stump and an evaluation of the associated risk factors. RESULTS: During the study period, 43 patients underwent DCAA. Amongst them, 32 (75%) had a well-vascularized colonic stump (well-vascularized group) and 11 (25%) ischemia of the colonic stump (ischemic group). Relative to patients in the well-vascularized group, those in the ischemic group were more often men (81.8% vs 40.6%, p = 0.034), had a higher BMI (29.2 kg/m2 vs 25.7 kg/m2, p = 0.03), were more frequently diabetic (63.6% vs 21.9%, p = 0.01) and more frequently had had preoperative radiotherapy (100% vs 53.1%, p = 0.008). On the preoperative CT scan, the interspinous diameter was shorter in the ischemic group (9.4 ± 1.01 cm vs 10.6 ± 1.01 cm, p = 0.001), the intertuberosity diameter was shorter (9.2 ± 1.18 cm vs 11.9 ± 1.18 cm, p < 0.0001), and the length of the anal canal was longer (31.9 ± 3 mm vs 27.4 ± 3.2 mm, p < 0.0001). CONCLUSION: This study highlights clear risk factors for ischemia/necrosis of the colonic stump after proctectomy with DCAA.

Successful removal of an intra-pericardic Kirschner wire via fluoroscopy-guided minimal invasive approach: a case report.

BACKGROUND: Kirschner wires are widely used in trauma surgery. Their migration into the pericardium is a rare but often fatal phenomenon, requiring urgent management. CASE PRESENTATION: We describe the case of a 65-year-old patient who underwent Kirschner wire placement to treat a humeral head fracture. Three months after the operation, pleural and pericardial effusions with cardiac tamponade were observed, leading to the diagnosis of wire migration within the pericardium. A minimally invasive approach guided by fluoroscopy allowed emergency wire extraction without needing a median sternotomy. The postoperative clinical course was uncomplicated. CONCLUSIONS: The use of pre- and per-operative multimodal imaging allowed for the safe extraction of an intra-pericardial Kirschner wire through a minimally invasive approach.