This prospective crossover study compared the incidence of posterior vessel wall puncture between two approaches during ultrasound-guided simulated central venous cannulation by anaesthesiology trainees. Each phantom model, simulating a central vein and artery, was cannulated by 37 anaesthesiology trainees under ultrasound-guidance using the in-plane approach (IPA) and out-of-plane approach (OPA). Total procedural time and the time taken from starting image scanning until commencing puncture, was recorded. The number of attempts required to achieve successful venous cannulation was noted. Finally, the models were examined for posterior venous wall and arterial puncture. Total procedural time was shorter with the OPA (26.5 vs 50.3 seconds, p=0.001). The time taken from starting image scanning until commencing puncture was shorter for the OPA (2.2 vs 12.3 seconds, p
Porto-spleno-mesenteric vein thrombosis is a rare, life-threatening condition of extrahepatic portal venous
system thrombosis. We report a rare case of a 49-year-old lady with late presentation of acute portal vein
thrombosis in a non-cirrhotic liver with an incidental finding of left adnexal teratoma. She presented with a
one-week history of severe abdominal pain associated with vomiting and diarrhea. She gave no history of prior
risk for venous thromboembolism or liver diseases. Physical examination revealed a tender mass extending from
suprapubic to left iliac fossa. Abdominal computed tomography scans showed a well-defined fat-containing left
adnexal mass, likely a benign teratoma, with no involvement of surrounding structures or calcification. There
was evidence of porto-splenic-mesenteric vein thrombosis with liver infarction, bowel and splenic ischemia.
Management of the extensive thrombosis causing multi-organ failure includes resuscitation, supportive care
and treatment of thrombosis. Treatment options include early anticoagulation and if feasible, thrombolysis.
Perioperative intravenous (IV) dexamethasone is administered prophylactically for post operative nausea and vomiting. However, its glucocorticoid property which raises blood glucose is of concern, especially among diabetic patients. The surgical stress response also contributes to increased perioperative blood glucose. Prior studies showed higher glucose levels with dexamethasone 8 mg compared to 4 mg, hence we studied the effect of the lower dose amongst diabetic patients. This prospective, single blinded, randomised study recruited forty-six type 2 diabetes mellitus patients planned for surgery under general anaesthesia. They received IV dexamethasone 4 mg or saline (placebo) after induction of anaesthesia. Capillary blood glucose levels were recorded preoperatively, and subsequently at recovery (T0), and at 6, 12, 18 and 24 (T6, T12, T18, T24) hours post-operatively. Median glucose levels were higher at 9.0 [10.5-7.7] mmol/l in the dexamethasone group, versus 7.4 [9.2-5.9] mmol/l in the placebo group at T0, p = 0.022. Similarly at T6, the dexamethasone group recorded higher glucose levels of 11.2 [15.0-9.3] mmol/l, versus 7.7 [9.0-6.2] mmol/l in the placebo group, p = 0.001. This corresponded to a significant difference between the groups, in the change of glucose levels from baseline values, p = 0.042. Subsequent readings at T12, T18, and T24 were comparable between the groups. In conclusion, IV dexamethasone 4 mg in type 2 diabetic patients, resulted in higher glucose levels immediately postoperative and 6 hours later. The change in blood glucose from baseline levels was significant between the groups at 6 hours postoperatively. Glucose levels however remained within acceptable range of approved guidelines in both groups at all recorded intervals.