经过1个多小(xiao)时(shi)的奋战，周(zhou)奶奶的纵隔肿(zhong)瘤被完整切(qie)除。整个手术过程中(zhong)麻(ma)醉(zui)师精心(xin)监(jian)护，保(bao)证(zheng)了患者生命体征平(ping)稳；手(shou)术室护(hu)士与(yu)主刀、助(zhu)手(shou)配(pei)合默契，确保了手(shou)术协调流畅。