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[Evaluation on left ventricular function by non-invasive transient deceleration wave intensity (W2) of carotid
Dong-Mei Miao1, Ping Ye, Jin-Yao Zhang
1Department 2 of Gerontic Cardiology, PLA General Hospital, Beijing 100853, China.
Insights
Transient deceleration wave intensity (W2) in the carotid artery is a novel, non-invasive hemodynamic parameter. Lower W2 in hypertensive patients correlates with impaired left ventricular diastolic function and elevated NT-proBNP levels.
Area of Science:
- Cardiovascular Physiology
- Hemodynamics
- Diastolic Function Assessment
Context:
- Hypertension is a major risk factor for cardiovascular disease, often leading to left ventricular diastolic dysfunction.
- Early detection of diastolic dysfunction is crucial for timely intervention and improved patient outcomes.
- Non-invasive methods for assessing hemodynamic parameters are increasingly sought after.
Purpose:
- To investigate the relationship between transient deceleration wave intensity (W2) of the carotid artery and left ventricular diastolic function.
- To evaluate the potential of carotid W2 as an early, non-invasive biomarker for diastolic dysfunction in hypertensive patients.
Summary:
- Carotid artery W2 was measured in 40 hypertensive patients and 43 healthy volunteers.
- Hypertensive patients exhibited significantly lower W2 compared to controls, particularly on the left side.
- Lower W2 showed a negative correlation with key indicators of diastolic function, such as E/Em ratio and NT-proBNP levels.
Impact:
- Carotid artery W2 emerges as a promising non-invasive parameter for the early detection and evaluation of left ventricular diastolic dysfunction.
- This finding may lead to new diagnostic strategies for hypertensive individuals, enabling earlier management of cardiovascular risks.
Objective:
To evaluate transient deceleration wave intensity (W2) of carotid artery on left ventricular diastolic function.
Methods:
40 patients with hypertension and 43 healthy volunteers were enrolled and W2 of carotid artery of the both sides were measured. The parameters of left ventricular diastolic function by traditional and tissue Doppler imaging and NT-proBNP (N-terminal probrain natriuretic peptide) were measured.
Results:
(1) W2 is not different between two sides of carotid artery. W2 in hypertension was lower than the control, especially in left side(1126 +/- 996 mmHg x m/s3 vs 1690 +/- 1126 mmHg x m/s3, P < 0.01). (2) The correlation of W2 and else parameters were analyzed. There were notably decreasing in left ventricular diastolic function of the hypertensive group than the control, for example, the ratio of peak velocity of early filling of mitral flow to peak early diastolic motion velocity of mitral annulus (E/Em, 9.37 +/- 3.32 vs 7.39 +/- 1.83, P < 0.01) and NT-proBNP (94.6 +/- 48.5 vs 45.2 +/- 13.8, P < 0.01). (3) The correlation analysis showed negative relation between W2 and E/Em (r = - 0.46, P < 0.05) and negative relation between W2 and NT-proBNP (r = -0.21, P < 0.05).
Conclusion:
New carotid W2 by non-invasive technology for hemodynamics is a deserving parameter in early evaluating left ventricular diastolic function.
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