scholarly journals A Comparison of Flow-mediated Dilatation and Peripheral Artery Tonometry for Measurement of Endothelial Function in Healthy Individuals and Patients with Peripheral Arterial Disease

2013 ◽  
Vol 45 (3) ◽  
pp. 263-269 ◽  
Author(s):  
R.B. Allan ◽  
C.L. Delaney ◽  
M.D. Miller ◽  
J.I. Spark
2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Richard B. Allan ◽  
Simon V. Vun ◽  
J. Ian Spark

This study compared flow-mediated dilatation (FMD), peripheral artery tonometry (PAT), and serum nitric oxide (NO) measures of endothelial function in patients with peripheral artery disease (PAD) against age/gender matched controls. 25 patients (mean age: 72.4 years, M : F 18 : 7) with established PAD and an age/gender matched group of 25 healthy controls (mean age: 72.4 years, M : F 18 : 7) were studied. Endothelial function was measured using the % FMD, reactive hyperemia index (RHI) using PAT and serum NO (μmol). Difference for each method between PAD and control patients and correlation between the methods were investigated. FMD and RHI were lower in patients with PAD (median FMD for PAD = 2.16% versus control = 3.77%,p=0.034and median RHI in PAD = 1.64 versus control = 1.92,p=0.005). NO levels were not significantly different between the groups (PAD median = 7.70 μmol, control median = 13.05 μmol,p=0.662). These results were obtained in elderly patients and cannot be extrapolated to younger individuals. FMD and PAT both demonstrated a lower hyperaemic response in patients with PAD; however, FMD results in PAD patients were unequivocally reduced whereas half the PAD patients had RHI values above the established threshold for endothelial dysfunction. This suggests that FMD is a more appropriate method for the measurement of NO-mediated endothelial function.


Circulation ◽  
2013 ◽  
Vol 127 (suppl_12) ◽  
Author(s):  
Sona Rivas-Tumanyan ◽  
Kenneth J Mukamal ◽  
Jennifer K Pai ◽  
Kaumudi J Joshipura

Introduction: Markers of endothelial function may be associated with increased risk for cardiovascular disease; however, prospective data for peripheral arterial disease (PAD) are limited. We evaluated the hypothesis that serum markers of endothelial dysfunction are associated with an increased risk of PAD among women. Methods: We conducted a nested case-control study within an ongoing prospective cohort of U.S. female nurses (Nurses’ Health Study). Among 32,826 NHS participants who provided blood samples in 1989-1990, after excluding those who had myocardial infarction, coronary heart disease, stroke, or carotid artery surgery prior to the PAD diagnosis, we included all incident PAD cases that occurred between 1990 and 2008 and were confirmed by medical records. Each case was individually matched with three eligible controls using risk-set sampling, by age, smoking, date of blood draw, and fasting status. We evaluated the association between serum levels of soluble intercellular adhesion molecule (ICAM-1), E-selectin, and the risk of PAD, using conditional logistic regression analysis. Results: Complete biomarker data from 1990 was available for 144 cases and 431 controls. After accounting for matching factors, baseline ICAM-1 levels were associated with higher risk of PAD (RR for highest (T3) vs. lowest (T1) tertile=1.75, 95% CI: 1.05-2.90). The association was attenuated and no longer significant (RR T3 vs. T1=1.37, 95% CI: 0.75-2.49) after adjusting for serum levels of HDL and LDL-cholesterol, family history of myocardial infarction, relative weight, reported aspirin and cholesterol-lowering medication use, hypertension and diabetes diagnoses, physical activity, and pack-years of smoking. Additional adjustment for CRP levels further attenuated the relative risk (RR T3 vs. T1= 1.24, 95% CI: 0.67-2.29). We did not observe any significant association between baseline E-selectin levels and the risk of PAD (multivariate- and CRP-adjusted RR T3 vs. T1=0.93, 95% CI: 0.54-1.59). Conclusions: There was no association between ICAM-1 and E-selectin and subsequent PAD in this cohort of U.S women.


2017 ◽  
Vol 32 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Syed Dawood Md Taimur ◽  
M Maksumul Haq ◽  
MA Rashid ◽  
SM Keramat Ali ◽  
Md Shahjahan ◽  
...  

Background: Peripheral arterial disease (PAD) is a marker of increased risk for cardiovascular events and of poorer prognosis in patients with coronary artery disease (CAD). The prevalence of unknown PAD amongst patients with ACS varies between studies according to the mode of diagnosis.Aims: To evaluate the prevalence of peripheral arterial disease (PAD) in diabetic ACS patients with or without tobacco user by using ankle brachial index (ABI).We also assess the probable predictors of PAD among these patients.Methodology: This prospective observational study was conducted in the Department of Cardiology, Ibrahim Cardiac Hospital and Research Institute, Dhaka, Bangladesh starting from 1st January 2016 to 30th April 2016 over a period of four months. A total of 60 patients were studied. They were grouped on the basis of their smoking habit. Diabetic patients with ACS and tobacco user (smoke and smoke less) in group I and without tobacco user in group II.Results: The mean age of the studied patients was 56.63 ± 8.95 years, range from 25-90 years. 73.30% was male and 26.70% was female. Twenty three patients of tobacco user in group-I (n=30) had peripheral artery disease and ten patients of group-II (n=30) had peripheral artery disease. It was statistically significant (p=0.003).Conclusion: There is correlation between peripheral arterial disease and coronary artery disease. Diagnosis and supervision of patients with PAD is important for preventing the local progression of the disease and effective secondary prevention of future coronary and cerebrovascular events.Bangladesh Heart Journal 2017; 32(1) : 3-9


2011 ◽  
Vol 152 (8) ◽  
pp. 285-291 ◽  
Author(s):  
Róbert Kirschner ◽  
Zsolt Pécsvárady ◽  
J. Róbert Bedros ◽  
Levente Tóth ◽  
Krisztián Kiss ◽  
...  

Patients with peripheral arterial disease often have coronary heart disease, as well. However, their assessment with classical noninvasive cardiology methods is often non-diagnostic or limited. The aim of this study was to analyze the feasibility and the risks of dobutamine stress cardiovascular MRI for cardiac evaluation of patients with peripheral arterial disease. 21 patients with peripheral artery disease (mean±SD age 64.3±7.7 years) were studied prospectively with dobutamine stress cardiovascular MRI. The protocol was completed by all of 21 patients. The target heart rate was attained in 95.2% of the studies. No serious adverse event occurred. The image quality scores (1-4) for all ventricular wall segments were high (median, interquartile range) (4 [4-4]). Five patients (23.8%) have inducible wall motion abnormality. Interobserver agreement was almost perfect for wall motion scores (κ = 0.87, p<0.0001). Dobutamine stress cardiovascular MRI is feasible with low risk for the cardiological assessment of patients with peripheral arterial disease. Orv. Hetil., 2011, 152, 285–291.


2002 ◽  
Vol 39 ◽  
pp. 206
Author(s):  
Gregorio Brevetti ◽  
Antonio Silvestro ◽  
Tiziana de Cristofaro ◽  
Roberta Annecchini ◽  
Roxana Bucur ◽  
...  

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