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Femoral Artery Sclerosis Evaluation by Tissue Doppler in Patients with Hypertension
1Department of Ultrasonography, Tianjin Union Medical Center (Tianjin People's Hospital), Tianjin, China (mainland).
Insights
Tissue Doppler imaging (TDI) effectively detects early femoral artery sclerosis in hypertensive patients. This method identifies arterial changes before intima-media thickness (IMT) alterations become apparent, aiding in early diagnosis.
Area of Science:
- Cardiovascular Imaging
- Vascular Ultrasound
- Hypertension Research
Background:
- Hypertension is a significant risk factor for cardiovascular disease.
- Early detection of vascular changes in hypertensive patients is crucial for intervention.
- Femoral artery intima-media thickness (IMT) is a marker of atherosclerosis.
Purpose of the Study:
- To evaluate the efficacy of tissue Doppler imaging (TDI) in detecting early femoral artery sclerosis in hypertensive patients.
- To compare TDI parameters with femoral artery IMT measurements.
- To assess TDI's potential as an early diagnostic tool for femoral artery disease.
Main Methods:
- One hundred hypertensive patients were divided into two groups based on femoral artery IMT (≥1.0 mm and <1.0 mm).
- Fifty healthy individuals served as controls.
- High-frequency ultrasound and pulsed wave TDI were used to examine femoral artery wall structure, IMT, and posterior wall motion, obtaining first (T1) and second (T2) peak durations.
Main Results:
- Significant differences in femoral artery IMT were observed between the groups (P<0.05).
- No significant difference in T1 peak duration was found across the groups (P=0.158).
- A statistically significant difference in T2 peak duration was noted between hypertensive patients and controls (F=50.411, P=0.000), with higher values in hypertensive groups.
Conclusions:
- TDI, specifically the second peak duration (T2), serves as an effective index for identifying early femoral artery sclerosis.
- TDI can detect arterial changes prior to significant alterations in femoral artery IMT.
- TDI shows promise as a valuable tool for the early diagnosis of atherosclerosis in hypertensive individuals.
Abstract:
BACKGROUND The aim of this study was to evaluate the early femoral sclerosis in hypertensive patients by using tissue Doppler imaging (TDI). MATERIAL AND METHODS One hundred patients with hypertension were recruited and divided into group A (femoral artery intima-media thicknesses (IMT) ≥1.0 mm) and group B (femoral artery IMT <1.0 mm) with 50 cases in each group based on the femoral IMT. In addition, 50 healthy controls were also included in this study. Femoral wall structure and femoral artery IMT were examined by using high frequency ultrasound. Pulsed wave (PW)-TDI was used to obtain the motion curve of the posterior wall of the femoral artery. First (T1) and second (T2) peak duration were also obtained. RESULTS The IMT of group A, group B, and the healthy control group were 1.17±0.12 mm, 0.74±0.11 mm, and 0.71±0.09 mm respectively with significant statistical difference (P<0.05). The first peak duration (T1) of the 3 groups (group A, group B, and healthy control group) were 135.6±16.6 ms, 134.5±18.5 ms, and 129.8±12.4 ms, respectively without statistical difference (F=1.868 P=0.158). The second peak duration (T2) of group A, group B, and the healthy control group were 234.7±39.8 ms, 209.3±34.9 ms, and 169.8±19.5 ms respectively with statistically significant difference (F=50.411 P=0.000). The diagnostic sensitivity, specificity area under the curve (AUC) and cutoff value for early arteriosclerosis diagnosis of femoral artery by T1 was 56.0% (95% CI: 41.3-70.0%), 66.0% (95% CI: 51.2-78.8%), AUC=0.54 (95% CI: 0.42-0.66) and 130.5 ms respectively. And it was 64.0% (95% CI: 49.2-77.1%), 62.0% (95% CI: 47.2-75.4%), AUC=0.69 (95% CI: 0.59-0.80) and 214.5 ms respectively for T2. CONCLUSIONS TDI can be used as an effective index for early femoral artery sclerosis before femoral artery IMT changes.
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