Cytopathology Flashcards
Types of cytological sampling
Exfoliative cytology
Abrasive cytology
Interventional (aspiration) cytology
Imprint cytology (on a glass slide imprinted on a surface)
What is exfoliative cytology
Collection and examination of shed or desquamated epithelial cells
for example - sputum, urine, bile, cerebrospinal fluid, vaginal discharge, pleural fluid, ascitic fluid, and fluid from cysts often using a syringe or cotton swab
Should be processed asap to stop deterioration thrpugh drying out/enzyme or bacterial activity
What is abrasive cytology
Removal and exam of cells from mucosal linings and body surfaces
Scrape, brush or wash.
Superficial or deep lesions, cervical smear, GI tract (endoscopy and gastric lavage) , buccal smear
What is aspiration cytology
Because aspirated with needle from palpable solid lump or mass ef breast, lymph node, tumor
What are the two main stains used
Papanicolaou (Pap) stain. Pap stain is actually comprised of 5 stains that provide a multicoloured cell sample allowing identification of different cell types and cellular features. Pap stain is very reliable and widely used, notably for cervical smears (Pap test or Pap smear).
Haematoxylin and eosin (H&E) stain.one of the main stains used in histopathology and cytopathology. Eosin stains the cytoplasm and extracellular matrix of cells pink, while haematoxylin stains nuclei blue and is often used for fluids and aspirates.
excision
tissue removed in a surgical procedure
What is pharmacokinetics
What body does to a drig - Absorption, distribution, metabolism, excretion - ADME
Pharmacodynamics
What the drug does t the body - how it works
Type A adverse drug reaction
Augemented - dose related, predicatble, usually common but not severe - some may be tho
Type B adverse drug reaction
Not dose related
Unpredictable
May be v severe/fatal
eg steven johnson syndrome
Class I vs class 2 adverse drug reaction types
Class I - Type A + B
Class 2 - Type C, D + E
Type C adverse drug reactions
Chronic treatment effects - oseteoporosis w steroids
Type D adverse drug reaction
Delayed effects eg drug induced cancers
Type E adverse drug reactions
Withdrawal
Cost effectiveness ratio
Cost of intervention/health gains produced