G. Dangas et al., Postprocedural hypotension after carotid artery stent placement: Predictors and short- and long-term clinical outcomes, RADIOLOGY, 215(3), 2000, pp. 677-683
Citations number
17
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging","Medical Research Diagnosis & Treatment
PURPOSE: To describe the predictors of persistent hypotension after carotid
artery stent (CAS) placement and define the clinical outcome of patients w
ith this hemodynamic disturbance.
MATERIALS AND METHODS: One hundred forty CAS procedures were performed in 1
33 consecutive patients. Post-GAS hypotension-defined as a greater than 40
mm Hg decrease in arterial pressure without evidence of hypovolemia, with a
systolic pressure lower than 90 mm Hg at the end of CAS and lasting at lea
st 1 hour-was observed in 25 patients (group 1);108 patients did not have h
ypotension (group 2).
RESULTS: Post-GAS hypotension developed in 33.9% of cases after balloonexpa
ndable stent placement versus in 13.6% of cases after self-expanding stent
placement (P =.04). in-hospital minor ipsilateral strokes occurred in 16% o
f cases in group 1 versus in 3% of cases in group 2 (P =.03). There was one
(0.9%) major stroke (transient) and three (2.6%) transient ischemic attack
s, all of which occurred in group 2 (not significant vs group 1 for both co
nditions). At 10 months +/- 4 (SD) of follow-up, there was greater total mo
rtality in group 1 than in group 2 (20% vs 4%, P =.02), whereas neurologic
events did not differ significantly between the groups.
CONCLUSION: Hypotension due to carotid sinus stimulation is frequent after
CAS with balloon-expandable stents. This phenomenon correlates with increas
ed in-hospital complications and long-term risk of death.