It was believed that the stories of Vlad's victims living through the initial...entry...was an exaggeration until recently when the correct path for the second pole was determined. Apparently the victims died when the pole had passed all the way through and out the mouth leaving the victim to choke to death on the pole that had entered their anus.
Vlad's version is far more effective at creating terror.
I believe GOYA drew an impaling in his DISASTERS OF WAR series of drawings.