I can't answer that with any conviction, but my husband had surgery 7 weeks ago, and they did insert one of those pumps a few hours into the immediate post-operative period.

He also suffered a stroke! Unfortunately he was so sick we didn't notice the stroke immediately, so whether the stroke happened during the surgery, or because of the pump......we have no way of knowing.

My husband is gradually improving. I hope your's is too hopefulwife.