Comparative study of right ventricular myocardial performance index in patients with severe preeclampsia by pulse doppler and tissue doppler

doi:10.3877/cma.j.issn.1674-6880.2016.06.006

Abstract

Abstract:

Objective

To investigate the right ventricular myocardial performance index (Tei index) in patients with severe preeclampsia by applying pulse Doppler and tissue Doppler, and to explore the feasibility of Tei index in the evaluation of right ventricular function.

Methods

One hundred and thirty-five parturients admitted to Shaoxing Women & Children's Hospital from October 2013 to September 2015 were enrolled in this retrospective study. They were divided into the observation group (55 cases with severe preeclampsia) and control group (80 cases with normotension). These two groups were analyzed with the general clinical data, right ventricular ejection fraction (RVEF), the ratio of tricuspid valve diastolic early E wave peak velocity and diastolic late A wave peak velocity (E/A), etc. In addition, the pulse Doppler (Tei₁) and tissue Doppler methods (Tei₂) measured the right ventricular Tei index for all parturients. The method of Pearson correlation analysis investigated the correlation between two Tei index measurements, after the combination of Tei indexes in two group parturients.

Results

The systolic and diastolic blood pressures in the observation group were significantly higher than those in the control group [(170 ± 7) mmHg vs. (108 ± 12) mmHg, (117 ± 6) mmHg vs. (72 ± 8) mmHg; t = 37.390, 36.803; all P< 0.05]. There were no statistically significant differences between the two groups in RVEF and E/A (all P > 0.05). The right ventricular Tei₁ index and Tei₂ index in the observation group were significantly higher than those in the control group [(0.58 ± 0.11) vs. (0.35 ± 0.12), (0.60 ± 0.12) vs. (0.38 ± 0.11); t = 11.809, 11.256; all P< 0.05]. After the combination of control and observation groups, there was no statistically significant difference between Tei₁ index and Tei₂ index [(0.45 ± 0.16) vs. (0.47 ± 0.16), t = 1.212, P = 0.227], and these two indices were positively correlated (r = 0.908, P< 0.001).

Conclusions

Tei index can accurately reflect the right ventricular function in patients with severe preeclampsia. The measurements of the right ventricular Tei index by using tissue Doppler and pulse Doppler had no significant difference, but a high degree of correlation.

Key words: Ultrasonography, Doppler, pulsed, Ventricular function, right, Eclampsia, Tissue Doppler, Tei index

Liejun Shou, Zuoping Xie, Ruyan Tan, Leyan Xie, Hua Yuan, Shehong Jin, Jiamei Zhou, Huiqin Wang, Hongmei Li. Comparative study of right ventricular myocardial performance index in patients with severe preeclampsia by pulse doppler and tissue doppler[J]. Chinese Journal of Critical Care Medicine(Electronic Edition), 2016, 09(06): 384-388.

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References 18

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组别	例数	年龄（岁）	孕龄（周）	身高(cm)	体质量(kg)	心率(次/min)	心脏收缩压(mmHg)	心脏舒张压(mmHg)
对照组	80	31 ± 7	35 ± 3	160 ± 5	70 ± 8	93 ± 7	108 ± 12	72 ± 8
观察组	55	30 ± 7	35 ± 2	159 ± 6	72 ± 7	94 ± 8	170 ± 7	117 ± 6
t值	?	0.662	0.243	1.172	1.244	1.425	37.390	36.803
P值	?	0.509	0.808	0.243	0.216	0.157	<0.001	<0.001

组别	例数	年龄（岁）	孕龄（周）	身高(cm)	体质量(kg)	心率(次/min)	心脏收缩压(mmHg)	心脏舒张压(mmHg)
对照组	80	31 ± 7	35 ± 3	160 ± 5	70 ± 8	93 ± 7	108 ± 12	72 ± 8
观察组	55	30 ± 7	35 ± 2	159 ± 6	72 ± 7	94 ± 8	170 ± 7	117 ± 6
t值	?	0.662	0.243	1.172	1.244	1.425	37.390	36.803
P值	?	0.509	0.808	0.243	0.216	0.157	<0.001	<0.001

组别	例数	RVEF(%)	E/A	Tei₁指数	Tei₂指数
对照组	80	61 ± 5	1.06 ± 0.20	0.35 ± 0.12	0.38 ± 0.11
观察组	55	59 ± 8	1.05 ± 0.26	0.58 ± 0.11	0.60 ± 0.12
t值	?	1.641	0.104	11.809	11.256
P值	?	0.103	0.917	<0.001	<0.001

组别	例数	RVEF(%)	E/A	Tei₁指数	Tei₂指数
对照组	80	61 ± 5	1.06 ± 0.20	0.35 ± 0.12	0.38 ± 0.11
观察组	55	59 ± 8	1.05 ± 0.26	0.58 ± 0.11	0.60 ± 0.12
t值	?	1.641	0.104	11.809	11.256
P值	?	0.103	0.917	<0.001	<0.001

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