What is a common sign of anaphylactic shock?

Low blood pressure and increased heart rate are indeed common signs of anaphylactic shock. During an anaphylactic reaction, the body releases a large amount of histamine and other chemicals in response to an allergen. This release can lead to vasodilation (widening of blood vessels), which causes blood pressure to drop significantly. As a compensatory mechanism, the heart rate increases to maintain adequate blood flow to vital organs.

Anaphylaxis is a severe and potentially life-threatening allergic reaction that can occur rapidly, often within minutes of exposure to an allergen. Recognizing these signs is critical for effective management and prompt treatment, as failure to address anaphylactic shock can lead to serious complications or even death. Therefore, awareness of cardiovascular changes, such as low blood pressure and tachycardia (increased heart rate), is essential for EMTs and other healthcare providers.