Lung Cancer Flashcards
Cellular Reproduction & Growth
Proliferation: new cell formation; mitosis & meiosis
Differentiation: acquisition of a cell role
Normal Replication Rate: one cell dies, one is created
Cell Signaling: needs a precise & error-free process
Complications
Neoplasia
Abnormal and progressive multiplication of cells
Benign or malignant
Lung Cancer
– starts in the lungs ->lymph nodes & brain = common
Metastases: when cancer that forms in one organ -> moves to another/spreads
Two types of lung cancer
Small cell
Non Small cell
Smoking = 80-90% of all lung cancers
Tobacco smoke contains 60 + carcinogens that interfere with normal cell development
Risk decreases with cessation: 10-15 years to reach same risk level as non-smokers
Risk depends on: pack years, depth of inhale, tar or nicotine content, filter use.
Pollution
Radiation (especially radon exposure)
Asbestos
Industrial Agents: coal dust, nickel, uranium, chromium, formaldehyde, arsenic
Leading cause of cancer related deaths in US; >breast, prostate & colon combined
Who’s at Risk?
Smoking
Secondhand Smoke
Radiation Exposure
Occupational Exposure
Air Pollution
Family History (behavior or genetic predisposition = uncertain)
*Smoking potentiates effects of all other risk factors
Non-Small Cell Lung Cancer
3 Main Types: each type has different cells, grouped together because treatment and prognosis is similar
Adenocarcinoma: begins in alveoli cells that make mucus; current or former smokers & non-smokers; women > men, younger patients; found in outer areas of lung; usually caught before it has spread
Squamous Cell Carcinoma: thin, flat cells; found in central lungs near bronchus; smokers
Large Cell Carcinoma: begins in several types of large cells – any area of lungs; spreads quickly = hard to treat
Small Cell Lung Cancer
2 Main Types:
Small Cell Carcinoma or “Oat Cell Cancer”:
Combined Small Cell Carcinoma:
Staging: Limited or Extensive
Treatment: tends to respond well to chemotherapy and radiation
Prognosis: likelihood that it will return is high
Metastisis
Tests to determine “stage” of the cancer NSCLC Occult (hidden) stage Stage I, II, III, IV Small Cell Limited or Extensive Cancer and How it Spreads *VIDEO * Tissue, Lymph System or Blood
Paraneoplastic Syndrome
Caused by hormones, cytokines, enzymes or antibodies
Autoimmune response to presence of tumors
Symptoms
Examples: hypercalcemia, SIADH, adrenal hypersecretion, polycythemia, Cushing Syndrome
*may manifest even before malignancy is diagnosed
*most often seen with SCLC
*Conditions may stabilize with treatment of the underlying neoplasm
Clinical Manifestations
*repeated episodes of lobar pneumonia Cough that doesn’t go away Chest Pain Shortness of Breath Wheezing Coughing up blood Later manifestations: Fatigue Weight Loss w/no known cause Nausea and Vomiting Hoarseness
Screening
Who should be screened? Hx of Heavy Smoking, and Smoke now or quit within 15yrs, and Between 55-80 yrs old Heavy Smoking = 30 pack years or more A “pack year” = 1 pack of cigarettes per day for one year
Treatments
Surgical Therapy
One lung and nearby lymph nodes only
May remove lung tissue, lymph node or biopsy
May be followed by chemotherapy or radiation to kill left over cancer cells
Radiation Therapy
External (used for Small cell); typically for palliative therapy (relieve symptoms)
Internal (seeds, wires, catheters w/ radioactive substances)
Chemotherapy
Mouth, IV in vein, or placed directly into the cerebrospinal fluid, an organ or body cavity
Immunotherapy
The Nursing Process
- Assessment
Subjective and Objective - Diagnosis
Understanding of : tests, diagnosis, treatment options and prognosis
Be sure to assess anxiety and support system on a regular basis - Planning
Priorities : (1) effective breathing patterns, (2) adequate airway clearance, (3) adequate oxygenation of tissues, (4) minimal to no discomfort, and (5) a realistic attitude about treatment and prognosis. - Interventions
Smoking cessation, healthy lifestyles, avoid environmental hazards (radon) - Evaluation
- True/False: The more cigarettes you smoke per day and the earlier you started smoking, the greater your risk of lung cancer.
True
*risk is directly related to “total exposure” to tobacco smoke (# of cigarettes, age, depth of inhale, tar & nicotine content, filter/no filter)