CAJ | 학술논문

目的利用超声探讨健康成年新西兰兔下腔静脉内径及血流频谱随呼吸的变化规律.材料与方法健康成年新西兰兔24只,利用二维超声、M型超声、彩色多普勒超声及频谱多普勒超声显示并测量兔下腔静脉内径及血流频谱,同步连接呼吸曲线及心电图,分析下腔静脉内径及血流频谱的峰值速度在呼气相与吸气相之间的差异.结果经剑突下斜切可获得较理想的新西兰兔下腔静脉的二维超声、M型超声、彩色及频谱多普勒图像.下腔静脉吸气相内径为(0.127±0.048)cm,显著小于呼气相内径(0.282±0.073)cm,差异有统计学意义(t=―23.462, P<0.001);频谱多普勒显示吸气相S波、D波血流峰值速度较呼气相增高(t=3.611、3.230, P<0.05);吸气相AR波血流峰值速度与呼气相无显著差异(t=1.399, P>0.05).结论超声检测新西兰兔下腔静脉可获得理想的二维、M型、彩色多普勒及频谱多普勒超声图像.新西兰兔下腔静脉随呼吸的变化规律表现为吸气相内径小于呼气相,吸气相离心波血流的峰值速度高于呼气相.
목적이용초성탐토건강성년신서란토하강정맥내경급혈류빈보수호흡적변화규률.재료여방법건강성년신서란토24지,이용이유초성、M형초성、채색다보륵초성급빈보다보륵초성현시병측량토하강정맥내경급혈류빈보,동보련접호흡곡선급심전도,분석하강정맥내경급혈류빈보적봉치속도재호기상여흡기상지간적차이.결과경검돌하사절가획득교이상적신서란토하강정맥적이유초성、M형초성、채색급빈보다보륵도상.하강정맥흡기상내경위(0.127±0.048)cm,현저소우호기상내경(0.282±0.073)cm,차이유통계학의의(t=―23.462, P<0.001);빈보다보륵현시흡기상S파、D파혈류봉치속도교호기상증고(t=3.611、3.230, P<0.05);흡기상AR파혈류봉치속도여호기상무현저차이(t=1.399, P>0.05).결론초성검측신서란토하강정맥가획득이상적이유、M형、채색다보륵급빈보다보륵초성도상.신서란토하강정맥수호흡적변화규률표현위흡기상내경소우호기상,흡기상리심파혈류적봉치속도고우호기상.
Purpose To study the changes of the diameter and the flow spectra of inferior vena cava (IVC) along with the respiration in healthy adult New Zealand rabbits by echocardiography. Materials and Methods The diameter and flow velocities of IVC were displayed by two-dimensional, M-mode, color and spectral Doppler echocardiography in 24 healthy New Zealand rabbits. The respiration curve and ECG were recorded simultaneously to analyze the differences of flow spectra and diameter between the inspiration phase and the respiration phase. Results The IVC images of two-dimensional, M-mode, color and spectral Doppler could be obtained satisfactorily on oblique subxiphoid sections. The diameter of IVC in the inspiration phase (0.127±0.048) cm was significantly smaller than that in the expiration phase (0.282±0.073) cm (t=-23.462, P<0.001). The flow velocities of the S and D waves were higher during inspiration phase than that during expiration (t=3.611, 3.230, P<0.05). There was no significant difference in AR between the inspiration phase and the expiration phase (t=1.399, P>0.05). Conclusion The IVC images of two-dimensional, M-mode, color and spectral Doppler can be obtained satisfactorily in healthy adult New Zealand rabbits. The diameter and flow spectra of IVC varies with the respiratory cycle. In the inspiration phase, the diameter of IVC is smaller, and the flow velocities of the S and D waves are higher.