We all know these patients are never straight forward. Say patient has INR 1.7. Would you still do it the nerve block? Surgeons especially for I and D cases usually don't have an issue with an INR of 1.7 and wanting to proceed with the case
Remember what the "guidelines/recommendation say?" To me if you are gonna to try a peripheral nerve block....always assume you will need general as a back up no matter what.
http://www.nysora.com/regional-anesthesia/foundations-of-ra/3300-ra-in-anticoagulated-patient.html
"The most recent ASRA guidelines recommended that the same guidelines on neuraxial injections apply to deep plexus or peripheral nerve blocks. Some clinicians may find this to be too restrictive and apply the same guidelines only to deep plexus and noncompressible blocks (e.g., lumbar plexus block, deep cervical plexus blocks) or to blocks near vascular areas, such as celiac plexus blocks or superior hypogastric plexus blocks. If peripheral nerve blocks are performed in the presence of anticoagulants, the anesthesiologist must discuss the risks and benefits of the block with the patient and the surgeon, and follow the patient very closely after the block."