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Nurs 5315 advanced pathophysiology 2024 uta exam 1 updated
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- University Of Texas - Arlington
Nurs 5315 advanced pathophysiology 2024 uta exam 1 updated
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NURS 5315 Advanced Pathophysiology1. Ovarian cancer site of metastasis?: Peritoneal surfaces, omentum (fold of
peritoneum connecting the stomach with other abdominal organs), *liver*
2. The increased NADH/NAD+ ratio in the liver from ethanol causes:: 1.
Pyruvate --> lactic acid, causing lactic acidosis
2. Oxaloacetate --> malate. This prevents gluconeogenesis and leads to
hypoglycemia
3. Glyceraldehyde-3-phosphate --> glycerol 3- phosphate and combines with
fatty acids to form triglycerides in the liver, known as hepatosteatosis
4. Decreases citric acid cycle production of NADH and leads to using Acetyl-
CoA for ketogenesis and lipogenesis
3. What can Reactive Oxygen Species cause?: Heart disease, Alzheimers,
Parkinsons, Amyotrophic Lateral Sclerosis (ALS), CV disease, HTN, HLD, DM,
ischemic heart disease, HF, OSA. Lipid perioxidation, damage proteins,
fragment DNA, less *protein synthesis*, chromatin destruction, damage
mitochondria
4. What is the body's defense against ROS?: Antioxidants (Vitamin E, Vitamin
C, cysteine, glutathione, albumin, ceruloplasmin, transferrin)
5. How are free radicals produced?: 1. Normal cellular respiration
2. Absorption of extreme energy sources (radiation, UV light)
3. Metabolism of exogenous chemicals, drugs, and pesticides
4. Transition of metals
5. Nitric oxide acting like a chemical mediator and a free radical
6. action potential: Process of conducting an impulse. Activates the neuron -->
the neuron depolarizes --> then repolarizes
7. Threshold potential: Point at which depolarization must reach in order to
initiate an action potential
8. Hypokalemia and action potentials: HYPERpolarized (more negative, ex. -
100). Less excitable. Decreased neuromuscular excitability: weakness, smooth
muscle atony, paresthesia, cardiac dysrhythmias
9. Hyperkalemia and action potentials: HYPOpolarized (more positive, ex:
closer to 0). More excitable. Peaked T waves.
When resting membrane potential=threshold potential, it is BAD = cardiac
standstill, paresthesia, paralysis
10. Hypocalcemia and action potentials: Increased permeability to Na+. More
excitable. Tetany, hyperreflexia, circumoral paresthesia, seizures,
dysrhythmias.
, NURS 5315 Advanced Pathophysiology
11. Hypercalcemia and action potentials: Decreased permeability to Na+.
Less excitable. Weakness, hyporeflexia, fatigue, lethargy, confusion,
encephalopathy, depressed T waves
12. Atrophy: Occurs as a result of decrease in work load, pressure, use, blood
supply, nutrition, hormonal stimulation, or nervous stimulation. Once the cell has
decreased in size, it has now compensated for decreased blood supply, nerve
supply, nutrient supply, hormonal supply, and has achieved new homeostasis.
Cells are alive but have diminished function and may lead to cellular death.
13. Atrophy examples: Physiologic atrophy- shrinking of the thymus gland
during childhood.
Disuse atrophy- someone that ends up being paralyzed
14. Hypertrophy: Increase in SIZE of cells, which will lead to increase in size of
organ. Caused by hormonal stimulation or increased functional demand.
15. Hypertrophy examples: physiologic hypertrophy- skeletal hypertrophy when
a person does heavy work or weight lifting / when a kidney is surgically
removed, the other kidney increases in size
pathologic hypertrophy- cardiomegaly results from an increased workload in
hypertensive patients / *left ventricular hypertrophy*
16. Hyperplasia: Increase in NUMBER of cells. Results from increased rate of
mitosis. Can ONLY happen in cells that are capable of mitosis (cell division).
17. Hyperplasia examples: 1. Thickening of skin because of hyperplasia of
epidermal cells.
2. Hormonal hyperplasia- occurs in estrogen dependent organs like uterus and
breast.
3. Compensatory hyperplasia- liver regenerates, callus on skin
4. Pathologic hyperplasia- estrogen is unopposed by progesterone and the
endometrial lining undergoes hyperplasia and increased risk for endometrial
cancer
18. Dysplasia: abnormal changes in the size, shape, and organization of mature
cells due to persistent, severe cell injury or irritation
19. Dysplasia examples: Pre cancer pap smears often show dysplastic cells of
the cervix that must undergo treatment.
20. Metaplasia: Changed cell that is REVERSIBLE (one cell is replaced by
another cell). Exposure to chronic stressors, injury or irritation, like smoking or
hydrochloric acid from heart burn
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