Document Detail

Prediction of severity of mean arterial pressure elevation after tracheal intubation in hypertensive patients by preanesthetic recurrence quantification analysis of heart rates.
MedLine Citation:
PMID:  12694149     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: We tried to determine whether the severity of additional mean arterial pressure (MAP) elevation after endotracheal intubation during general anesthesia could be predicted with preanesthetic recurrence quantification analysis of heart rates in hypertensive and normotensive patients. METHODS: Twenty-four newly diagnosed hypertensive patients and 34 normotensive patients were included. We defined DeltaMAP = maximal mean MAP after endotracheal intubation - average MAP before general anesthesia. We classified each of the hypertensive and normotensive patients into mild (DeltaMAP </= 35 mmHg [median value of DeltaMAP in the hypertensive patients]) and severe group (DeltaMAP > 35 mmHg). Using preanesthetic RR interval data, we calculated classical linear and non-linear indices of RR interval dynamics, and performed recurrence quantification analysis to calculate three preanesthetic recurrence indices, percentage of recurrence (%REC), percentage of determinism (%DET), and maximal length of recurrence (Lmax). RESULTS: In the hypertensive patients, all preanesthetic classical indices showed no significant difference between the mild and severe group and showed no significant linear correlation with the DeltaMAP. However, the Lmax was significantly higher in the severe than in the mild group (16.10 +/- 3.79 vs. 7.90 +/- 0.73, P < 0.005) and, moreover, linearly correlated with the DeltaMAP (r = 0.671, P = 0.001). In the normotensive patients, all preanesthetic classical and recurrence indices showed no significant difference between the two groups. CONCLUSION: In hypertensive patients, the severity of additional MAP elevation after tracheal intubation during general anesthesia can be predicted by the preanesthetic recurrence quantification analysis of heart rates.
M K Yum; H S Kim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta anaesthesiologica Scandinavica     Volume:  47     ISSN:  0001-5172     ISO Abbreviation:  Acta Anaesthesiol Scand     Publication Date:  2003 Apr 
Date Detail:
Created Date:  2003-04-15     Completed Date:  2003-08-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370270     Medline TA:  Acta Anaesthesiol Scand     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  475-81     Citation Subset:  IM    
Department of Pediatrics, College of Medicine, Hanyang University, Seoul National University, Seoul, Korea.
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MeSH Terms
Aged, 80 and over
Anesthesia, General
Blood Pressure*
Heart Rate*
Hypertension / physiopathology*
Intubation, Intratracheal* / adverse effects
Middle Aged
Models, Statistical
Signal Processing, Computer-Assisted

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

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