scholarly journals Nonlinear Measures of Heart Rate Variability and Mortality Risk in Hemodialysis Patients

2012 ◽  
Vol 7 (9) ◽  
pp. 1454-1460 ◽  
Author(s):  
Mari Suzuki ◽  
Takahashi Hiroshi ◽  
Toru Aoyama ◽  
Miho Tanaka ◽  
Hideki Ishii ◽  
...  
2000 ◽  
Vol 10 (1) ◽  
pp. 10-16 ◽  
Author(s):  
Ann K. Cashion ◽  
Patricia A. Cowan ◽  
E. Jean Milstead ◽  
A. Osama Gaber ◽  
Donna K. Hathaway

Context Cardiac autonomic function has been associated with mortality in patients with end-stage renal disease. It is unknown whether end-stage renal disease patients who have succumbed to sudden cardiac death can be better identified by a newer test of heart rate variability that uses spectral analysis, rather than laboratory evoked measures. Objective This series of studies sought to characterize cardiac autonomic function in patients awaiting kidney transplantation, identify factors associated with heart rate variability, identify tests which distinguish patients at-risk for death, and compare evoked measures with 24-hour heart rate variability measures. Patients Data were collected on 184 nondiabetics, 60 type 1 diabetics, and 34 type 2 diabetics with end-stage renal disease, all of whom had been referred for kidney transplantation. Main Outcome Measures The 278 patients and 67 healthy control subjects underwent evoked tests (changes in heart rate with deep breathing and Valsalva maneuver) and 24-hour heart rate variability Holter monitoring (time and frequency domains). Five patients had sudden cardiac deaths during the study. Results Data showed that end-stage renal disease patients, particularly diabetics, had compromised autonomic function. The standard deviation of all R-to-R intervals for the electrocardiogram recording (<50 minutes in 60% of the deceased patients), a 24-hour heart rate variability time domain measure, holds the promise of identifying patients at increased risk for death. Exercise was identified as a factor associated with better autonomic function. Examining relationships between 24-hour heart rate variability and characteristics of patients who succumb to death could make quantification of the mortality risk for individual pretransplant end-stage renal disease patients possible, much as it has in other populations. The data from this study may also make it possible to design interventions, such as exercise, aimed at reducing mortality risk.


Circulation ◽  
1994 ◽  
Vol 90 (2) ◽  
pp. 878-883 ◽  
Author(s):  
H Tsuji ◽  
F J Venditti ◽  
E S Manders ◽  
J C Evans ◽  
M G Larson ◽  
...  

2011 ◽  
Vol 34 (5) ◽  
pp. 334-343 ◽  
Author(s):  
Manuela Ferrario ◽  
Jochen G. Raimann ◽  
Stephan Thijssen ◽  
Maria Gabriella Signorini ◽  
Anja Kruse ◽  
...  

2017 ◽  
Vol 32 (suppl_3) ◽  
pp. iii651-iii652
Author(s):  
Olga Bilevich ◽  
Nikolay Ovsyannikov ◽  
Vyacheslav Tereshchenko

Renal Failure ◽  
2005 ◽  
Vol 27 (1) ◽  
pp. 7-12 ◽  
Author(s):  
Isaline Coquet ◽  
Christiane Mousson ◽  
Gerard Rifle ◽  
Gabriel Laurent ◽  
Daniel Moreau ◽  
...  

1999 ◽  
Vol 10 (9) ◽  
pp. 1972-1981
Author(s):  
DVORA RUBINGER ◽  
DAN SAPOZNIKOV ◽  
ARTHUR POLLAK ◽  
MORDECAI M. POPOVTZER ◽  
MYRON H. LURIA

Abstract. The present study was undertaken to compare heart rate variability (HRV) values in patients on maintenance hemodialysis with no evidence of ischemic or hypertensive heart diseases to those of age- and gender-matched healthy individuals and those of patients after renal transplantation. To assess the effects of a common confounding factor, HRV values were also determined in patients with systemic amyloidosis, in chronic hemodialysis, and after successful renal transplantation. Spectral analyses of RR intervals from continuous electrocardiogram recordings were performed to quantify ultra low frequency, very low frequency, low frequency, and high frequency powers. HRV determinations were all significantly reduced in uremic patients undergoing hemodialysis compared with the healthy control subjects, especially in those with systemic amyloidosis. Renal transplantation normalized HRV in most patients; HRV, however, remained reduced in isolated amyloidosis patients with cardiac or adrenal involvement. HRV circadian day/night differences were preserved in hemodialysis patients and after renal transplantation in those without amyloidosis but not in those with amyloidosis. These data suggest that reduced HRV in chronic hemodialysis patients may precede other manifestations of cardiovascular disease. In uremic patients with amyloidosis, a more severe form of autonomic failure may occur. Successful transplantation corrects HRV abnormalities in most patients, suggesting that the autonomic dysfunction of uremia is caused by humoral factors reversed by the normalization of the renal function.


Author(s):  
Jeremy Zhenwen Pong ◽  
Stephanie Fook-Chong ◽  
Zhi Xiong Koh ◽  
Mas’uud Ibnu Samsudin ◽  
Takashi Tagami ◽  
...  

The emergency department (ED) serves as the first point of hospital contact for many septic patients, where risk-stratification would be invaluable. We devised a combination model incorporating demographic, clinical, and heart rate variability (HRV) parameters, alongside individual variables of the Sequential Organ Failure Assessment (SOFA), Acute Physiology and Chronic Health Evaluation II (APACHE II), and Mortality in Emergency Department Sepsis (MEDS) scores for mortality risk-stratification. ED patients fulfilling systemic inflammatory response syndrome criteria were recruited. National Early Warning Score (NEWS), Modified Early Warning Score (MEWS), quick SOFA (qSOFA), SOFA, APACHE II, and MEDS scores were calculated. For the prediction of 30-day in-hospital mortality, combination model performed with an area under the receiver operating characteristic curve of 0.91 (95% confidence interval (CI): 0.88–0.95), outperforming NEWS (0.70, 95% CI: 0.63–0.77), MEWS (0.61, 95% CI 0.53–0.69), qSOFA (0.70, 95% CI 0.63–0.77), SOFA (0.74, 95% CI: 0.67–0.80), APACHE II (0.76, 95% CI: 0.69–0.82), and MEDS scores (0.86, 95% CI: 0.81–0.90). The combination model had an optimal sensitivity and specificity of 91.4% (95% CI: 81.6–96.5%) and 77.9% (95% CI: 72.6–82.4%), respectively. A combination model incorporating clinical, HRV, and disease severity score variables showed superior predictive ability for the mortality risk-stratification of septic patients presenting at the ED.


1998 ◽  
Vol 31 (4) ◽  
pp. 602-606 ◽  
Author(s):  
K Tamura ◽  
H Tsuji ◽  
T Nishiue ◽  
I Yajima ◽  
T Higashi ◽  
...  

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0120459 ◽  
Author(s):  
Szu-Chia Chen ◽  
Chien-Fu Chen ◽  
Jiun-Chi Huang ◽  
Mei-Yueh Lee ◽  
Jui-Hsin Chen ◽  
...  

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