By M. Loftus Christopher

Show description

Read Online or Download Carotid Endarterectomy: Principles and Technique, Second Edition PDF

Similar economy books

The second law of thermodynamics;: Memoirs by Carnot, Clausius, and Thomson (Harper's scientific memoirs)

This booklet is a facsimile reprint and will include imperfections akin to marks, notations, marginalia and improper pages.

Foreign Direct Investment in Kazakhstan: Politico-Legal Aspects of Post-Communist Transition

The cave in of the centrally deliberate platforms of the previous Soviet Union surely stands proud as essentially the most very important international occasions of the 20 th century. The transformation from a centralized economy to a marketplace method created significant possibilities for Western organisations to go into markets that had previously been closed to them.

Extra info for Carotid Endarterectomy: Principles and Technique, Second Edition

Example text

The patient is returned to the operating room, the wound is opened, and a hand injection of contrast media is performed while taking a single cervical x-ray. Gross technical errors or thrombosis can be identified by this technique without the need for reopening the vessel or the delay of proceeding to the angiographic suite. Intraoperative Doppler Scanning. Informal use of sterilized Doppler probes applied to all vessels in the arteriotomy tree is commonly employed as a qualitative measure of postarteriotomy patency.

In view of these findings, patients undergoing carotid artery surgery are currently managed at normocapneic levels, or with only mild hyperventilation, avoiding extremes of arterial pCO2 (191,200). Data concerning induced-intraoperative hypertension is much more consistent. Significant increases in both local rCBF (194) and in stump pressure (191) have been documented with pharmacologically induced hypertension in patients undergoing carotid cross-clamping. Many surgeons, who shunt based on intraoperative monitoring, first attempt to reverse ischemic changes with a controlled elevation of arterial pressure.

In most of these series, a good correlation has existed between failure of ipsilateral rCBF and slowing or flattening of the EEG, but several authors have stressed the lack of such correlation between rCBF and ipsilateral stump pressures (213,210). It is clear that most surgeons using rCBF determinations opt for intraluminal shunting at values below 18–20 cc/100 g/min. A single study, however, of patients in whom shunts were never used reports uneventful neurologic outcomes in some patients with intraoperative rCBF as low as 9 cc/100 g/min (218).

Download PDF sample

Rated 4.93 of 5 – based on 22 votes