What should be done if the systolic blood pressure in the left arm is 30 mmHg lower than that of the right arm?

If there is a significant disparity in blood pressure readings between the arms, such as a difference of 30 mmHg in the systolic blood pressure, it is important to notify the healthcare provider. This discrepancy may indicate underlying issues such as vascular disease, arterial blockage, or other cardiovascular concerns that require further investigation.

A significant difference in blood pressure readings can signal potential problems, and addressing these findings promptly ensures that appropriate evaluations or interventions can be initiated. Actions like having the patient take a walk, ignoring the reading, or reassuring them that everything is normal do not address the potential seriousness of the situation and could risk the patient's health by delaying proper care. Hence, informing the healthcare provider is the most appropriate course of action in this scenario.