Document Detail

Single transpulmonary thermodilution in off-pump coronary artery bypass grafting: haemodynamic changes and effects of different anaesthetic techniques.
MedLine Citation:
PMID:  17378780     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Off-pump coronary artery bypass grafting (OPCAB) can be associated with severe cardiovascular changes, thus requiring advanced haemodynamic monitoring. Our aim was to investigate the feasibility of transpulmonary single thermodilution (STD) combined with pulse-contour analysis, a newly introduced method for cardiovascular monitoring, for assessment of changes in haemodynamics during different anaesthetic techniques in OPCAB. METHODS: Thirty-six patients scheduled for elective OPCAB were randomized to receive anaesthesia either with midazolam, propofol or isoflurane, in addition to fentanyl and pipecuronium. After catheterization of the femoral artery, haemodynamic parameters were assessed using STD and pulse-contour analysis. The measurements were performed after induction of anaesthesia, during surgery and at 2, 4 and 6 h post-operatively. RESULTS: At the end of surgery, the global ejection fraction decreased by 29% and 19% in the midazolam and the propofol groups, respectively, (P < 0.05) but remained unchanged in the isoflurane group. Moreover, in the isoflurane group, the left ventricular contractility index was higher and the mean arterial pressure (MAP) and the systemic vascular resistance index (SVRI) decreased in comparison with pre-operative values. Post-operatively, the cardiac index (CI) and the cardiac function index (CFI) increased in all groups (P < 0.05). The peri-operative requirement for ephedrine and nitroglycerin increased in the propofol and the midazolam groups, respectively (P < 0.05). CONCLUSION: During OPCAB, STD and pulse-contour analysis displayed changes in preload, myocardial function and afterload that gave valuable guidance for the conduct of anaesthesia, fluid management, and the administration of vasoactive agents. As assessed using STD, isoflurane within the present dose range appears to maintain myocardial performance and vascular tone better than midazolam or propofol.
M Y Kirov; A I Lenkin; V V Kuzkov; E V Suborov; V Y Slastilin; V V Borodin; I I Chernov; A N Shonbin; L J Bjertnaes
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta anaesthesiologica Scandinavica     Volume:  51     ISSN:  0001-5172     ISO Abbreviation:  Acta Anaesthesiol Scand     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-03-23     Completed Date:  2007-07-03     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0370270     Medline TA:  Acta Anaesthesiol Scand     Country:  England    
Other Details:
Languages:  eng     Pagination:  426-33     Citation Subset:  IM    
Department of Anaesthesiology and Intensive Care Medicine, Northern State Medical University, Arkhangelsk, Russian Federation.
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MeSH Terms
Anesthesia / methods*
Anesthetics, Inhalation / administration & dosage
Anesthetics, Intravenous / administration & dosage
Blood Pressure / drug effects*
Coronary Artery Bypass, Off-Pump / methods*
Coronary Artery Disease / surgery
Feasibility Studies
Fentanyl / administration & dosage
Heart Function Tests / methods
Heart Rate / drug effects*
Isoflurane / administration & dosage
Midazolam / administration & dosage
Middle Aged
Monitoring, Physiologic / methods*
Neuromuscular Nondepolarizing Agents / administration & dosage
Pipecuronium / administration & dosage
Propofol / administration & dosage
Stroke Volume / drug effects
Surgical Procedures, Elective / methods
Thermodilution / methods
Vascular Resistance / drug effects*
Reg. No./Substance:
0/Anesthetics, Inhalation; 0/Anesthetics, Intravenous; 0/Neuromuscular Nondepolarizing Agents; 2078-54-8/Propofol; 26675-46-7/Isoflurane; 437-38-7/Fentanyl; 59467-70-8/Midazolam; 68399-58-6/Pipecuronium

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