ALTOONA, Pa. (WTAJ) -- After four years of time constraints, UPMC Altoona is now offering an advanced stroke treatment any time of day or night after receiving certification to perform the surgery 24/7.The medical center has earned the Thrombectomy-Capable Stroke Center (TSC) Certification from The Joint Commission and the American Heart Association/American Stroke Association (AHA/ASA), becoming one of a few hundred hospitals in the country to …