Document Detail

Good correlation between cerebral oxygenation measured using near infrared spectroscopy and stump pressure during carotid clamping.
MedLine Citation:
PMID:  17622209     Owner:  NLM     Status:  MEDLINE    
AIM: Intraoperative hypoperfusion ischemia is one factor that leads to perioperative stroke during carotid endarterectomy. Selective shunting is one way to reduce intraoperative hypoperfusion, but to shunt selectively needs a sensitive and simple monitoring system together with the rules for insertion. Near infrared spectroscopy (NIRS) is a monitoring system that can be used throughout the operation, and reflects the cerebral oxygenation instantly, but its value in insertion of shunt tubes is still controversial. The aim of this study was to determine criteria that can be used to insert shunt tubes. METHODS: Forty-three consecutive patients with severe carotid stenosis undergoing carotid artery surgery with NIRS monitoring were enrolled in the study. Under general anesthesia, the optodes of NIRS were placed bilaterally on the forehead. Throughout the operation, regional saturation of the frontal lobe (SdO2) was monitored every 5 s. RESULTS: All operations were performed without any perioperative deaths. NIRS showed that SdO2 fell rapidly as soon as the artery was cross-clamped, and reached the lowest level after 60 s. SdO2 change at 60 s and the stump pressure showed good correlation (r=0.65), and stump pressure of 40 mmHg was almost equivalent to 5% SdO2 decrease in NIRS. CONCLUSION: NIRS monitoring is suitable for monitoring during carotid endarterectomy for selective shunting, because it can be used throughout the operation and shows the immediate change in oxygenation. There is a possibility that a decrease of 5% can be used as a decisive value for shunt insertion.
K Yamamoto; T Miyata; H Nagawa
Related Documents :
7455399 - Control of breathing during acute hemorrhage in anesthetized cats.
2551549 - Plasma vasopressin and atrial natriuretic factor during haemorrhage: influence of cardi...
9876099 - Arterial baroreceptor afferent activity in nonpulsatile systemic circulation.
10225469 - Thalamic hemorrhage following carotid endarterectomy-induced labile blood pressure: con...
4051029 - Nutrient control of cardiac rate in infant rats: role of arterial baroreceptors.
18075519 - Structural and functional arterial properties in patients with obstructive sleep apnoea...
7485849 - Effects of hostility on alcohol stress-response-dampening.
2543729 - Pressure adaptation of na+/k+-atpase in gills of marine teleosts.
12097979 - A paradigm for quantifying ventricular contraction.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International angiology : a journal of the International Union of Angiology     Volume:  26     ISSN:  0392-9590     ISO Abbreviation:  Int Angiol     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-07-11     Completed Date:  2007-12-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8402693     Medline TA:  Int Angiol     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  262-5     Citation Subset:  IM    
Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Blood Pressure / physiology*
Brain Ischemia / diagnosis,  etiology,  metabolism*
Carotid Arteries / physiopathology,  surgery
Carotid Stenosis / physiopathology*,  surgery
Cerebrovascular Circulation / physiology*
Endarterectomy, Carotid / adverse effects*
Frontal Lobe / blood supply,  metabolism
Intraoperative Complications / etiology,  metabolism,  physiopathology
Monitoring, Intraoperative / methods
Oxygen Consumption / physiology*
Spectroscopy, Near-Infrared / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Laser Doppler skin perfusion pressure in the diagnosis of limb ischemia in patients with diabetes me...
Next Document:  Ischemic stroke in patients with diabetic foot.