definitions Flashcards
what is the definition of perfusion?
the process of delivering blood to the capillary bed and organs in the body.
what is the definition of asthma?
asthma is a reversible inflammatory disease of the small airways. it is characterized by bronchospasm, mucosal oedema, and mucus plugging.
what is the process of asthma?
exposure to a trigger factor leads to mast cell degranulation, leads to a release of mediators such as histamine. leads to bronchospasm, mucosa oedema, and mucus plugging.
what is the definition of anaphylaxis?
a severe lifethreatening systemic allergic reaction to a previously encountered antigen. characterised by airway, GIT, and cardiovascular issues.
what are the signs and symptoms of anaphylaxis?
- mucoasl oedema- expiratory wheeze
- red skin urticaric rash
- N+V+D, abdominal cramps
- angiodema
- hypotension
what is the general process of anaphylaxis?
exposure to an antigen. release of mediators(histamine, prostaglandins). vasodilation and increased capillary permiabilty leads to rash, hypotension, and mucosal oedema. also smooth muscle contration occurs leading to abdo symptoms.
what is the definition of diabetes?
type 1: failure to produce enough insulin
type2: body developes and resistance to insulin.
what is DKA?
a life threatening complication for hyperglyceamic diabetics which causes dehydration and metabolic acidosis.
what are some signs and symptoms of DKA?
lethargy, hyperglycemia, dehydration, abdominal cramps, nausea and vomiting, fruity breath, kussmaul resps (compensatory release of co2 to combat acidosis)
