geria Flashcards
aging (what’s not to be expected)
sickness, although common, isn’t part of the normal aging process; emphasis on this during pt. education
chronological vs biological age
chronological - your age in years from date of birth; biological age- your body’s age (affected by different factors, e.g., stress, disease/condition)
body changes when we get older (10)
- decrease in muscle performance (dec ms fiber size, fast-twitch fibers; loss of muscle mass; denervation of ms fibers, decline in total number)
- dec bone tensile strength (more osteoclast, less osteoblasts) [bones get more brittle]
- dec jt flexibility [less flexibility]
- ms mass decline at 30 [less ms]
- by 60-90, 30% of ms force production dec [less ms strength]
difference of fast-twitch and slow-twitch fibers
slow twitch (type I) - slow red ox
- aerobic, endurance exercises; oxygenated
fast-twitch - power / dynamic movement
osteopenia vs osteoporosis
osteopenia - less amount of bone density; osteoporosis - PROGRESSIVE LOSS of bone density
if untreated, osteopenia -> osteoporosis; major cause of fractures, MC women > men
osteosarcopenic obesity syndrome (what is it, describe the process and its components; is it reversible)
sarcopenia (loss of ms mass), osteopenia (loss of bone density), obesity (d/t myosteatosis AKA accumulation of fat in ms tissue)
- also: dynapenia (age-related loss of ms strength)
- these are normal processes in aging that can be addressed but if these 3 are left unchecked they will lead to osteosarcopenic obesity syndrome (NOT normal)
reversible unlike cachexia
sarcopenia vs cachexia
cachexia - loss of ms mass with or w/o fat loss; weight loss usually associated w end-stage diseases; body is wasting away and eating at itself, towards the end of this, pt. usually has to rely on caregivers for basic functions (total dependence); exercise has no effect
sarcopenia - reversible, MC men > women; ms mass loss; can be reversed by training
changes in collagen fibers during aging (4)
- less water in collagen matrix => less shock absorption properties, loss of collagen in IV discs (get shorter/smaller)
- inc crosslinks => scar tissue-like, not as pliable
- dec elastic fibers = skin sagging
- dec ROM - fine as long as fxal
CV changes during aging and consequences (6-9)
- dec HRmax & vo2max- dec aerobic workload capacity
- stiffer vascular tissue - inc BP, dec cardiac output and ventricle filling
- dec contractility in vasc tissue - dec HR, vo2max, aerobic workload capacity
- loss of cells in SA node - dec HR & HR max
- thickened basement membrane in capillary - dec arteriovenous o2 uptake
neurologic system changes during aging (5-6)
- loss of myelin - slowed nerve conduction
- axonal loss - slower ms fibers, loss of fine sensation
- ANS dysfunc - systemic issues (e.g., CV and GI systems)
- loss of sensory neurons - dec ability to discern of temperature and pain
- slower response time - inc fall risk
cognitive changes during aging (5)
- slower info processing
- delays in processing & task execution, learning, and long-standing tasks
- higher cognitive reserves in younger years serve as a neuroprotective resource when we get older (more grey and white matter reserves)
process leading to ADRs (3)
- altered distribution and absorption of drugs, impaired metabolizing of liver, difficulty in excretion => altered drug response and side-effects
distribution - less motile, absorption area, stomach emptying and gastric acid
absorption - less water, ms mass and plasma protein; inc fat
polypharmacy vs ADR
ADR - physiological response
polypharmacy - behavioral; excessive/inappropriate use of drugs
vicious cycle of drug administration (5)
more illness/conditions -> medications taken for conditions -> medications have side-effects -> side-effects are seen as sx. -> more medication taken for those side-effects (cycle repeats)
common ADRs (10) describe (common sx, mechanism, common meds, PT indications)
GI-S-FW-C-A-D-E-E-D-OH
GI issues
- vomiting, nausea, diarrhea, constipation
- NSAIDs, opioids: inhibit both cox inhibitors (inhibition of cox 1 leads to GI bleeding bc dec in mucosal lining)
- antibiotics: mess up gut fauna
- cox 2 inhibitors (eg. celecoxib, celebrex - increase MI risk)
sedation
- sleepiness, drowsiness
- analgesics, sedative-hypnotics, antihistamines, benzos, barbs
- dont lift heavy weights
fatigue & weakness
- ms weakness (more relaxed), less water and electrolytes
- diuretics, HTN meds (-zide, -zone)
confusion
- mild confusion to delirium
- antidepressants, drugs w anticholinergic effect (parasympathetic NS activity), narcotics, analgesics
depression
- barbs, antipsychotics, anti-HTN drugs (clonidine, propanolol, reserpine)
- clonidine: decreases catecholamine output -> inhibition of sympathetic NS
- reserpine: sympatholytic -> directly depresses sympathetic NS
excessive bleeding
- anti-HTN meds (i.e., anti-platelet meds)
extrapyramidal effects
- tardive dyskinesia, dystonia, pseudoparkinsonism
- antipsychotics
anticholinergic effects
- antihistamines, antipsychotics, anticholinergic drugs
- CNS effects (drowsy, dizzy) some PNS (sympathetic activated sx
OH
- anti-HTN, anti-anginal meds
- inc risk for falls
dizziness & falls
- sedation and OH-inducing drugs