Cancer Flashcards
basic pathophysiology of cancer
uncontrolled cell growth
causes of cancer
1). extrinsic: carcinogens 2). Intrinsic: genetic mutations/DNA sequences, viral agents, chronic irritation, genetic predisposition, oncogenes
General stages of cell lifecycle
G0: cell at rest G1: Pre-DNA S: DNA synthesis G2: pre-mitosis Mitosis
cell-cycle-specific (CCS) agents do what?
target specific phase of cell cycle
what are CCS agents more effective on?
rapidly dividing tumors
dose frequency of CCS agents
continuous infusion or frequent doses
cell-cycle nonspecific (CCN) agents do what?
target the cell during it’s entire life cycle (including G0)
What areas of the body are primarily adversely affected by chemotherapy?
bone marrow, GI, buccal mucosa, reproductive organs, hair follicles
what are CCN agents more effective on?
slow large growing tumors
dose frequency/timing of CCN agents
intermittently dose to reduce toxicities
what is Nadir?
10-28 days when WBC is at it’s lowest, no trx given here
what stage of the cell life cycle is chemotherapy not effective?
G0: cell at rest
primary treatment (cure) for cancer
surgery, radiation, chemotherapy, biotherapy
when is adjuvant therapy used?
after primary trx
when is neoadjuvant therapy used?
before primary trx