Doppler echocardiography

Doppler Echocardiography There are many red blood cells in the blood, which can reflect and scatter ultrasound, which can be considered as a tiny sound source. The probe is placed in the rib gap and emits ultrasonic waves. When red blood cells flow in the heart or large blood vessels, the sound of red blood cell scattering changes. When the red blood cells move toward the probe, the reflected sound increases, and vice versa. The difference in the audio produced when the red blood cells move relative to the probe is called the Doppler shift. It shows the speed, direction and nature of blood flow. Doppler echocardiography is further divided into pulsed Doppler echocardiography, continuous wave Doppler echocardiography, and color Doppler echocardiography. The most widely used is pulsed Doppler echocardiography, which can trace the real-time Doppler spectrum of any blood flow in the heart in the case of two-dimensional image monitoring and positioning. Basic Information Specialist classification: cardiovascular examination classification: ultrasound Applicable gender: whether men and women apply fasting: not fasting Tips: When you check, relax and cooperate with your doctor. Normal value The normal reference values ​​of each valve in the blood flow spectrum are as follows Tricuspid maximum flow rate Adult 30~70cm/s; Children 50~80cm/s. Pulmonary valve maximum flow rate Adult 60~90cm/s; Children 50~105cm/s. Mitral valve maximum flow rate Adult 60~130cm/s; Children 80~130cm/s. Left ventricular outflow tract maximum flow rate Adult 70~110cm/s; Children 70~120cm/s. Maximum aortic valve velocity Adult 100~170cm/s; Children 120~180cm/s. Clinical significance Doppler echocardiography can be used to measure blood flow direction, blood flow properties, blood flow velocity, blood flow, abnormal blood flow, abnormal blood flow can assist two-dimensional echocardiography, clear structural abnormalities and walking , determine the abnormal shunt phase. High results may be diseases: pediatric myocarditis, myocarditis, hypertensive heart disease, aortic valve stenosis, diabetic heart disease, pericardial malignant teratoma, uremic pericarditis, combined valvular disease, aortic stenosis, congenital Sexual coronary aneurysm considerations No contraindications, no side effects on the human body. Pay attention to your relaxation and check with your doctor. Inspection process Use the instrument probe to probe over the heart. Not suitable for the crowd Generally there is no suitable for the crowd. Adverse reactions and risks Generally, this test has no side effects on the human body.