PMID- 25514504
OWN - NLM
STAT- MEDLINE
DCOM- 20151215
LR  - 20161125
IS  - 1361-6579 (Electronic)
IS  - 0967-3334 (Linking)
VI  - 36
IP  - 1
DP  - 2015 Jan
TI  - On the risk of aortic valve replacement surgery assessed by heart rate 
      variability parameters.
PG  - 163-75
LID - 10.1088/0967-3334/36/1/163 [doi]
AB  - In recent years the number of arterial stenosis (AS) patients has grown rapidly 
      and valvular disease is expected to be the next great epidemic. We studied a 
      group of 385 arterial valve replacement (AVR) surgery patients, of whom 16 had 
      died in the postoperational period (up to 30 d after the operation). Each patient 
      had a heart rate variability (HRV) recording made prior to the operation in 
      addition to a full set of medical diagnostics including echocardiography. We 
      formed 16 age, sex, New York Heart Association (NYHA) class, and BMI adjusted 
      control pairs for each person who died in the perioperative period. Our aim was 
      to find indications of the risk from AVR surgery based on the medical data and 
      HRV properties. Besides standard, linear HRV methods, we used indexes of time 
      irreversibility introduced by Guzik (G%), Porta (P%), Ehlers (index E) and Hou 
      (index D). In addition, we analyzed the multiscale multifractal properties of HRV 
      calculating the Hurst surface. The nonlinear analysis methods show statistically 
      significant indications of the risk of AVR surgery in an increase of 
      multifractality and an increase of time irreversibility of the HRV measured prior 
      to the operation.
FAU - Zebrowski, J J
AU  - Zebrowski JJ
AD  - Complex Systems Division, Faculty of Physics, Warsaw University of Technology, 
      ul. Koszykowa 75, 00-662 Warszawa, Poland.
FAU - Kowalik, I
AU  - Kowalik I
FAU - Orlowska-Baranowska, E
AU  - Orlowska-Baranowska E
FAU - Andrzejewska, M
AU  - Andrzejewska M
FAU - Baranowski, R
AU  - Baranowski R
FAU - Gieraltowski, J
AU  - Gieraltowski J
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20141216
PL  - England
TA  - Physiol Meas
JT  - Physiological measurement
JID - 9306921
SB  - IM
MH  - Aortic Valve/diagnostic imaging/physiopathology/*surgery
MH  - Aortic Valve Stenosis/diagnostic imaging/mortality/physiopathology/surgery
MH  - Diabetes Complications/physiopathology
MH  - Female
MH  - Heart Rate
MH  - Heart Valve Prosthesis Implantation/*adverse effects
MH  - Humans
MH  - Hypertension/complications/physiopathology
MH  - Linear Models
MH  - Male
MH  - Middle Aged
MH  - Nonlinear Dynamics
MH  - Odds Ratio
MH  - Postoperative Period
MH  - Risk
MH  - Risk Assessment/*methods
MH  - Severity of Illness Index
MH  - Ultrasonography
EDAT- 2014/12/17 06:00
MHDA- 2015/12/17 06:00
CRDT- 2014/12/17 06:00
PHST- 2014/12/17 06:00 [entrez]
PHST- 2014/12/17 06:00 [pubmed]
PHST- 2015/12/17 06:00 [medline]
AID - 10.1088/0967-3334/36/1/163 [doi]
PST - ppublish
SO  - Physiol Meas. 2015 Jan;36(1):163-75. doi: 10.1088/0967-3334/36/1/163. Epub 2014 
      Dec 16.