Anaphylactic shock
Section: 4F
Code: BDS209
, Introduction:
When the immune system overreacts to an allergen, typically foods, medications, or insect bites,
it can cause anaphylactic shock, a severe allergic reaction that can be fatal. This reaction results
in the release of significant amounts of histamine and other inflammatory mediators into the
bloodstream. (Cristol, 2016). This release can result in a rapid and systemic response that affects
multiple organ systems, causing a rapid and widespread dilation of blood vessels, a drop in blood
pressure, and constriction of the airways. Ultimately, this leads to hypotension, respiratory
distress, and cardiovascular collapse. The pathophysiology of anaphylaxis involves a complex
interplay between IgE-mediated mast cell activation, complement activation, and cytokine
release, ultimately culminating in a cascade of physiological events that can be difficult to
manage without prompt and aggressive intervention.
Prevalence:
Anaphylactic shock affects individuals of all ages and backgrounds,
but the incidence is highest among young-adults and children
(Pumphrey & Gowland, 2007). Females are reported to have a higher
incidence of anaphylactic shock than males (Watling, 2013).
Individuals with asthma, atopic dermatitis, and other allergic
conditions are at a higher risk of anaphylactic shock.
Despite being a rare condition, anaphylactic shock can be fatal in
some cases. The reported mortality rates vary widely depending on
the population studied, but some studies have reported a mortality
rate of less than 1% for anaphylactic shock (Turner et al., 2017). The incidence of anaphylactic
shock is estimated to affect 1-2% of the general population, but the prevalence is likely
underestimated due to the lack of consensus in diagnostic criteria and under-reporting.
Signs & Symptoms:
The signs and symptoms of anaphylactic-shock can vary depending on the severity of the
reaction and the organs involved (Mayo Clinic, 2021). Some common signs and symptoms of
anaphylactic shock, according to the system includes:
Section: 4F
Code: BDS209
, Introduction:
When the immune system overreacts to an allergen, typically foods, medications, or insect bites,
it can cause anaphylactic shock, a severe allergic reaction that can be fatal. This reaction results
in the release of significant amounts of histamine and other inflammatory mediators into the
bloodstream. (Cristol, 2016). This release can result in a rapid and systemic response that affects
multiple organ systems, causing a rapid and widespread dilation of blood vessels, a drop in blood
pressure, and constriction of the airways. Ultimately, this leads to hypotension, respiratory
distress, and cardiovascular collapse. The pathophysiology of anaphylaxis involves a complex
interplay between IgE-mediated mast cell activation, complement activation, and cytokine
release, ultimately culminating in a cascade of physiological events that can be difficult to
manage without prompt and aggressive intervention.
Prevalence:
Anaphylactic shock affects individuals of all ages and backgrounds,
but the incidence is highest among young-adults and children
(Pumphrey & Gowland, 2007). Females are reported to have a higher
incidence of anaphylactic shock than males (Watling, 2013).
Individuals with asthma, atopic dermatitis, and other allergic
conditions are at a higher risk of anaphylactic shock.
Despite being a rare condition, anaphylactic shock can be fatal in
some cases. The reported mortality rates vary widely depending on
the population studied, but some studies have reported a mortality
rate of less than 1% for anaphylactic shock (Turner et al., 2017). The incidence of anaphylactic
shock is estimated to affect 1-2% of the general population, but the prevalence is likely
underestimated due to the lack of consensus in diagnostic criteria and under-reporting.
Signs & Symptoms:
The signs and symptoms of anaphylactic-shock can vary depending on the severity of the
reaction and the organs involved (Mayo Clinic, 2021). Some common signs and symptoms of
anaphylactic shock, according to the system includes:
