We've always been told never to miss insulin doses, so it's a case to case basis depending on how low the blood sugar is, but in that scenario the main concern is to raise the sugar level first. So it is imperative that the doctor is readily informed.If the patient is still conscious we usually administer Hypostop or any sugary drink then we check their bsl's at regular intervals, otherwise the common order would be to administer 25 mls of 50% glucose IV (as per trust protocol) . Certain trusts may have different policies on this though.
And of course, in this case insulin won't help, especially if patient is on actrapid.