Cardiovascular symptoms
Important characteristics of anaphylaxis include involvement of the heart and blood vessels.
A decrease in blood pressure is one of the earliest indicators of this condition.
Pulse that is both weak and rapid: a decrease in blood pressure may also manifest as a weak pulse and cold skin. To mitigate for decreased pressure, however, the body’s mechanisms cause the heart to beat faster. In such a circumstance, the pulse rate is elevated and rapid when felt with the fingertips.
Rhythm disturbances: As a result of the direct effect of anaphylactic mediators on blood vessels, the heart may indirectly suffer, influencing its filling capacity and pumping ability. This may result in irregular cardiac rhythms. The heart’s pumping may also be perceived as a fluttering in the thorax. These are known as palpitations.
Chest pain: Chest pain can be a sign of inadequate blood supply to the heart’s own tissue. Chest pain can be a concerning symptom of anaphylaxis, as it is indicative of a significant underlying heart condition.
The chemical mediators cause blood vessels to release fluid into the surrounding environment by acting on blood vessels. Reduced fluid volume exerts a low pressure on the vessel walls. In contrast, the blood vessels supplying the heart muscle become constricted, thereby increasing the risk of a heart attack.
