How long does it take for blood to reach the heart after an intravenous injection?

Intravenous injection is a common treatment method, which can promote the rapid effect of drugs. For the veins on the back of the hand, strict aseptic operations are required. In addition, for people who receive long-term infusions, they should pay attention to protecting the veins to avoid hazards such as hardening of the skin. If 24-hour continuous infusion is required, the infusion set should be replaced every day. Let’s take a look at this aspect.

How long does it take for blood to reach the heart after an intravenous injection?

1. Dorsal vein of hand → basilic vein → subclavian vein → superior vena cava → right atrium → right ventricle → pulmonary artery → pulmonary vein → left atrium → left ventricle → aorta → superior and inferior mesenteric arteries

2. After intravenous injection, the drug first passes through the right atrium of the heart

What are the precautions for intravenous infusion?

(1) Strictly implement aseptic operation and checking system.

(2) Plan the infusion sequence according to the patient's condition and pay attention to drug incompatibilities. For highly irritating or special drugs, intravenous puncture and infusion with normal saline should be performed first to ensure that the needle is in the blood vessel before injecting the drug.

(3) For patients who receive long-term infusion, attention should be paid to protecting and rationally using the veins.

(4) Before infusion, exhaust all air in the infusion tube, replace the solution bottle or add solution in time during the infusion, and remove the needle in time after the infusion is completed.

(5) During the infusion process, strengthen inspections to observe any infusion reactions and eliminate infusion faults in a timely manner.

(6) For patients who require 24-hour continuous infusion, the infusion set should be replaced every day.

(7) External jugular vein catheterization should be prevented from blockage and heparin solution should be injected when necessary.

Injection type

1. Intradermal injection (ID)

Intradermal injection is a method of injecting a small amount of liquid medicine between the epidermis and the dermis.

2. Subcutaneous injection (H)

Subcutaneous injection is a method of injecting a small amount of liquid medicine into the subcutaneous tissue.

3. Intramuscular injection (IM or im)

Intramuscular injection is a method of injecting liquid medicine into muscle tissue.

4. Femoral vein injection

It is often used for pressurized infusion, blood transfusion or blood sample collection in emergency.

5. Arterial puncture injection

Perform blood gas analysis. In case of severe shock, blood must be transfused through the arteries to increase the effective blood volume. Perform certain special examinations (such as cerebral angiography). Perform certain treatments (injection of anti-cancer drugs).