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Cardiac cyclic variation of integrated backscatter in hypertension and dialysis patients
Harun Akar1, Ceyhun Ceyhan, Yavuz Yenicerioglu
1Department of Nephrology, Adnan Menderes University Medical School, Aydin, Turkey. hakar2002@hotmail.com
Insights
Cyclic variation of myocardial-integrated backscatter (CV-IB) shows altered myocardial structure in end-stage renal disease (ESRD) and essential hypertension (EH) patients. CV-IB values were lower in EH patients than controls and ESRD patients, and lower in ESRD patients than controls.
Area of Science:
- Cardiology
- Biomedical Engineering
- Nephrology
Background:
- Cyclic variation of myocardial-integrated backscatter (CV-IB) is a non-invasive method for assessing myocardial contractile function.
- Limited data exists on CV-IB in patients with end-stage renal disease (ESRD).
Purpose of the Study:
- To investigate and compare CV-IB in essential hypertensive (EH) patients, ESRD patients, and healthy controls.
- To assess myocardial ultrasonic tissue characteristics using CV-IB.
Main Methods:
- Compared 40 EH patients, 24 ESRD patients, and 10 healthy controls using 2D-Doppler echocardiography.
- Analyzed CV-IB at the interventricular septum (IVS) and left ventricular (LV) posterior wall (PW) during systole and diastole.
Main Results:
- EH patients had significantly higher blood pressure than ESRD patients and controls.
- Left ventricular mass index (LVMI) was elevated in both EH and ESRD patients compared to controls.
- CV-IB values were significantly lower in EH patients compared to ESRD patients and controls, and lower in ESRD patients compared to controls.
Conclusions:
- CV-IB provides valuable parameters for evaluating myocardial structure in EH and ESRD patients.
- Further research is warranted to fully elucidate the role and implications of CV-IB in ESRD patients.
Background:
Cyclic variation of myocardial-integrated backscatter (CV-IB) offers a non-invasive myocardial contractile performance assessment. There is limited data concerning CV-IB in end-stage renal disease (ESRD) patients.
Methods:
Forty essential hypertensive (EH) patients (mean age 51+/-8 yrs) and 24 ESRD patients (mean age 49+/-14 yrs) were compared to 10 healthy controls (mean age 45+/-10 yrs). A 2D-Doppler echocardiography with digitized imaging was performed to characterize myocardial ultrasonic tissue by CV-IB between systole and diastole at the interventricular septum (IVS) and left ventricular (LV) posterior wall (PW).
Results:
There was no significant difference between age and sex among groups. Systolic and diastolic blood pressures (BP) were both higher in EH patients (157/96 mmHg in EH, 129/81 mmHg in ESRD and 115/77 mmHg in controls, p<0.001). Left ventricular mass index (LVMI) was higher in EH and ESRD patients than in controls (respectively, 119+/-37, 130+/-46, 87+/-12 g/m2, p<0.05), while there was no significant difference found between EH and ESRD patients. EH patient CV-IB values were significantly lower than in ESRD patients and controls (respectively, 6.9+/-1.6, 8.6+/-0.7, 10.6+/-1.1 dB, p<0.001 for IVS, 7.7+/-1.3, 8.7+/-0.8, 10.4+/-1.1 dB, p<0.001 for PW). CV-IB for PW and IVS were significantly lower in ESRD patients than in controls (p<0.001).
Conclusions:
CV-IB can offer useful parameters for myocardial structure in EH and ESRD patients. Further studies are needed to clarify CV-IB in ESRD patients.
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