... Number of patients (%, range)Mortality Number of patients (%, range)Without shunt* 42 53 165 (3. 8, 1.1–80) 59 (1.4, 0–2.0)With shunt 430 3 1 63 (3. 8, 21–71) 71 (1.7, 05 3. 5)Selective use of shunt ... Stroke 1992; 23: 15 83. 69. Bornstein NM, Rossi GB, Treves TA, Shifrin EG. Is transcranial Doppler effective in avoiding the hazards of carotid surgery? Cardiovasc Surg 1996; 4 (3) : 33 5– 33 7.70. Jansen ... 1979; 85: 633 – 637 .114. Taylor E, Schmidex H, Scott RM, Wepsic JG, Ojemann RG. Reflex hypotension following carotid endarterectomy: mechanisms and management. J Neurosurg 19 73; 39 : 32 3.115....