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The association between the renal resistive index and the myocardial performance index in the general population
Author(s) -
Quisi Alaa,
Harbalıoğlu Hazar,
Özel Mehmet Ali,
Alıcı Gökhan,
Genç Ömer,
Kurt Ibrahim Halil
Publication year - 2020
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/echo.14702
Subject(s) - ejection fraction , cardiology , medicine , hemodynamics , population , doppler echocardiography , resistive index , blood flow , heart failure , diastole , blood pressure , environmental health
Objective The renal resistive index (RRI) is the most described measure of renal hemodynamics. The myocardial performance index (MPI) is widely used to assess overall myocardial performance. In this study, we aimed to investigate the relationship between renal hemodynamics, assessed by the RRI, and cardiac functions, assessed by the MPI in the general population. Methods This single‐center, cross‐sectional study included a total of 302 consecutive patients who presented to our outpatient cardiology clinic between October 2019 and February 2020. All patients underwent transthoracic echocardiography and renal Doppler ultrasonography. The study population was divided into two groups: low RRI group (RRI ≤ 0.7, n = 236) and high RRI group (RRI > 0.7, n = 66). Results E/A ratio, left ventricular ejection fraction (LVEF), and the MPI were significantly higher in the high RRI group than in the low RRI group (61.3 ± 15.4 vs 55.3 ± 16.4, P = .010 for E velocity; 0.9 ± 0.3 vs 0.7 ± 0.2, P = .008 for E/A ratio; 57.7 ± 4.7 vs 53.2 ± 10.1, P = .029 for LVEF; 0.52 ± 0.1 vs 0.43 ± 0.1, P < .001 for the MPI). A stepwise linear regression analysis demonstrated that LVEF ( β = .123, P = .026), E velocity ( β = .221, P < .001), and the MPI ( β = .392, P < .001) were independently associated with the RRI. Conclusion Left ventricular ejection fraction and intra‐cardiac Doppler blood flow indices, including E velocity and the MPI, were significantly and independently associated with the RRI in the general population.