What is the effect of intravenous injection of normal saline on blood pressure?
May 12, 2023
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
Intravenous injection of normal saline generally causes an increase in blood pressure. When normal saline is administered intravenously, it increases blood volume, and blood pressure levels are related to blood volume. If large amounts of normal saline are injected intravenously, the resulting increase in blood volume may elevate blood pressure to some extent. If medication is required, it is recommended to use it under the guidance of a physician.
Intravenous injection of normal saline generally leads to an increase in blood pressure. The detailed explanation is as follows:
Normal saline usually refers to sterilized 0.9% sodium chloride solution, which can be used for cleaning, washing, or irrigating traumatic wounds, as well as for intravenous infusion therapy. When administered intravenously, normal saline increases blood volume. Blood pressure is closely related to blood volume—when blood volume decreases, blood pressure drops. However, if large amounts of normal saline are infused intravenously, the increased blood volume may lead to elevated blood pressure to some extent. Moreover, excessive intravenous administration of normal saline may increase the workload on the heart, potentially leading to left heart failure.
If medication is needed, it is recommended to use it under a doctor's guidance. Self-medication without medical advice should be avoided to prevent adverse outcomes due to improper use. If discomfort occurs after using the medication, prompt medical consultation is advised, and treatment should be carried out according to medical instructions. In daily life, it is important to maintain healthy habits, ensure adequate sleep, and avoid excessive fatigue.
