No abstract

(J Clin Anesth. 2020;61:109666) Presently, there is no agreement among experts in regards to the safe minimum threshold platelet count for lumbar neuraxial anesthetic procedures, as there are limited data available on neuraxial anesthetic procedures performed on thrombocytopenic patients. During cesarean deliveries, there are important maternal and fetal factors and side effects to consider when choosing to administer general anesthesia rather than neuraxial anesthesia. Because more data on spinal epidural hematoma are needed, Bauer and colleagues conducted this systematic review to assemble reported lumbar neuraxial procedures (lumbar puncture; spinal, epidural, or combined spinal-epidural analgesia/anesthesia; epidural catheter removal) from various thrombocytopenic populations to bring some clarity to the risk of spinal epidural hematoma.

No abstract

Paradoxical thromboembolism has variable presentation depending on site of embolisation. An African-American man in his 40s presented with severe abdominal pain, watery stools and exertional dyspnoea. At presentation, he was tachycardic and hypertensive. Labwork showed elevated creatinine with unknown baseline. Urinalysis showed pyuria. A CT scan was unremarkable. He was admitted with working diagnosis of acute viral gastroenteritis and prerenal acute kidney injury and supportive care was instituted. On day 2, the pain migrated to left flank. Renal artery duplex ruled out renovascular hypertension but showed a lack of distal renal perfusion. MRI confirmed a renal infarct with renal artery thrombosis. Transoesophageal echocardiogram confirmed a patent foramen ovale. Simultaneous arterial and venous thrombosis require hypercoagulable workup, including investigation for malignancy, infection or thrombophilia. Rarely, venous thromboembolism can directly cause arterial thrombosis by ‘paradoxical thromboembolism’. Given the rarity of renal infarct, high index of clinical suspicion is necessary.