Kalra M, al-Khaffaf H, Farrell A, Wallbank W A, Charlesworth D
Department of Surgery, University Hospital of South Manchester, U.K.
Ann Vasc Surg. 1994 May;8(3):225-31. doi: 10.1007/BF02018168.
Transcranial Doppler ultrasound measurement of the velocity of blood flow in the middle cerebral artery (MCA) was performed in 24 consecutive patients undergoing carotid endarterectomy. Measurements were performed preoperatively at rest, following common carotid artery compression, and continuously during surgery. In addition, internal carotid artery stump pressures were measured and a subjective assessment of back flow was made. No relationship between MCA flow velocity and stump pressure following carotid clamping was demonstrated. Peak and mean MCA flow velocity was significantly lower in patients with stump pressures < 30 mm Hg (p < 0.03) and those with poor back flow (p < 0.02).
对24例连续接受颈动脉内膜切除术的患者进行经颅多普勒超声测量大脑中动脉（MCA）的血流速度。测量在术前静息状态下、颈总动脉压迫后以及手术过程中持续进行。此外，测量颈内动脉残端压力并对反流进行主观评估。未证明颈动脉夹闭后MCA血流速度与残端压力之间存在关系。残端压力<30 mmHg的患者（p<0.03）以及反流较差的患者（p<0.02）的MCA血流峰值和平均血流速度显著较低。
