Table 6: Shamshirsaz and Clark in SOAP 2013 also describe this A-OK therapy with the addition of metoclopramide, which was not used in our patient [15]. The atropine is used to treat vagal overstimulation and improve vasomotor tone while Ondansetron blocks serotonin receptors inhibiting the release of further mediators [4, 16]. The Ketorolac blocks thromboxane production thereby preventing coagulopathy [4].

A-OK medication regimen [3]

Atropine 1 mg (vagolytic)
Ondansetron 8 mg (5-HT3 antagonist)
Ketorolac 30 mg (cyclooxygenase inhibitor)