THE CHANGING FACE OF CAROTID ENDARTERECTOMY

Purpose: The economic milieu and improvements in care have altered the diagnostic and therapeutic algorithm of the patient with carotid sten osis. This study analyzes the efficacy and safety of these changes. Me thods: The records of patients who underwent 520 consecutive carotid e ndarterectomies performed by three surgeons at our institution from 19 90 to 1994 were reviewed retrospectively. Use of diagnostic angiograph y, use of carotid duplex ultrasound, length of hospital stay, postanes thesia recovery observation, intensive care unit (ICU) observation, co mplications, and hospital charges were analyzed. Results: The average length of hospital stay decreased from 6.18 days to 2.00 days (P less than or equal to 0.001). The day of discharge decreased from 3.10 days to 1.24 days after surgery (p less than or equal to 0.01). By 1993, 6 8% were discharged by the first day after surgery, increasing to 73% b y 1994. From 1990 to 1992, average postoperative ICU observation time fluctuated between 18 and 25 hours; this time decreased to 12.2 hours by 1994. In 1993, only 12.5.% of patients were admitted to the ICU, do wn from 94.8% in 1990; by 1994, only 7.3% were admitted to the ICU (p I 0.001). Postanesthesia recovery observation time decreased from 3.77 hours to 1.63 hours during this time (P less than or equal to 0.04). With regard to preoperative diagnosis, angiography was performed in 93 .1% of patients in 1990; by 1994, only 32.8% underwent this procedure (p less than or equal to 0.0001). Average hospital charges decreased s ignificantly (1990, $14,378; 1994, $10,436) with these modifications i n patient care (p less than or equal to 0.001). The complication rate reflected no significant changes over the course of the study. There w ere six incidences of cerebrovascular accident (6/320, 1.9%), includin g one death. There were four incidences of transient ischemic attack ( 4/320, 1.3%), with no significant differences noted from year to year. Conclusions: This study confirms the changing nature of carotid endar terectomy and documents that these changes have not adversely affected the safety of the operation.