Prayers needed...

Please offer up a prayer for my grandpa. He had surgery yesterday to remove a bowel obstruction. He woke up quickly, but was in a lot of pain and basically had to beg the nurses to give him more pain killers (he'd used up his allotted dosage too soon). He's 90 years old, so not necessarily in the best condition to recover from an operation. So please say a prayer for him! Thanks!