Phlebitis can affect health and take a heavy toll on patients. Patients can feel pain in the affected area, which is due to the emergence of blood circulation, resulting in blood stasis, which is very harmful. This disease has similar symptoms to other diseases, so it should be checked out. So, what is the inspection method of phlebitis?
I. Venous pressure measurement: Increased venous pressure of the affected limb, indicating obstruction of proximal cardiac veins at the side pressure;
Second, radionuclide examination: 125I fibrinogen scanning is used for the diagnosis of the disease. In contrast to ultrasonography, the detection rate of deep vein thrombosis in gastrocnemius muscle can be as high as 90%, but the specificity of diagnosis of proximal deep vein thrombosis is poor. The main disadvantage of this test is that it takes 48-72 hours after radionuclide injection to show results.
3. Ultrasound: 2D ultrasound imaging can directly see the thrombi in the large vein, and measure the blood flow velocity in the vein with Doppler, and observe whether the normal reaction of breathing and compression action exists. The positive rate of diagnosis of proximal deep vein thrombosis was 95%. The sensitivity of the diagnosis of distal patients is only 50%-70%, but the specificity can reach 95% of thrombophlebitis.
Iv. Deep venography: Contrast agent is injected into the shallow veins of the foot and pressure pulse band is used in the proximal end, which is easy to make the contrast agent directly into the deep vein system. If there is a vein filling defect, it can be shaped and diagnosed. The diagnosis of superficial venous thrombosis is easy and the local symptoms and signs are obvious.
Impedance plethysmography and venous hemography: the former uses skin electrodes, and the latter uses an inflatable cuff to measure changes in venous volume under physiological changes. When the vein is blocked, the amplitude of voltaic volume wave is small due to respiration and cuff filling and discharging. The positive rate of this test can reach 90% in the diagnosis of proximal deep vein snow mountain formation, and the sensitivity of remote diagnosis is significantly reduced.
Phlebitis mainly has the following causes:
First, blood vessel wall damage: Blood vessel damage will cause platelet aggregation, fibrin and blood cell deposition, and promote thrombosis.
Second, blockage of blood flow: long-term bed, sitting, squatting, will cause lower limb blood vessels to be squeezed, resulting in slow blood flow, stagnation, causing phlebitis.
Third, long-term infusion: continuous infusion through the catheter can cause direct damage to the vein wall, or damage the vein wall due to various mechanical impact reasons, resulting in inflammation.
Fourth, varicose veins: lower extremity varicose veins can lead to venous blood stasis, cause nutritional changes and chronic infection, so that varicose veins hypoxia, inflammation, the formation of phlebitis.
5, high blood concentration: lower extremity trauma, surgery, large area burns, pregnancy and postpartum, platelet increase, while the release of clotting factors, so that the blood composition changes, a hypercoagulable state, providing a hotbed for the formation of phlebitis.
We should pay attention to the inspection method, after the diagnosis of the disease, must be timely treatment. Let the disease go into remission. Usually also pay attention to exercise, so as to help enhance physical fitness and immune ability, effectively avoid other inflammation. Also pay attention to prevention in life, do not sit for a long time.