Exam 5 Flashcards
Self concept, sleep & rest; fluid and electrolytes; Grief and spirituality;
components of self concept
- body image
- personal identity
- role perfomrance
factors that affect self concept
- environment
- support system/ resources
- stressors
- background
stressors affecting self concept
- identity stressor
- body image stressors
- self esteem stressors
- role stressors
how to improve self esteem
- demand respect
- teach others to treat you well
- tell others what you like about them
- acknowledge your worth
- overcome the fear of failure
- increase your comfort zone
- reframe thoughts
sleep: homeostatic drive
-maintains internal equilibrium by adjusting its physiological processes influencing many body functions:
-thirst, sleep
this is your mind telling you to sleep when you are tired.
circadian rhythm
daily rythmic activity cycle based on 24hour intervals
Stage 1 of sleep
- very light sleep, if not disturbed person will move onto 2nd stage
- muscle contractions (Hypnic Myoclonia) occur and are preceeded by the feeling of falling
Stage 2 of sleep
- person starts to think of images but no visions are seen with your eyes
- if undistrubed, drift off into stage 3
Stage 3 of sleep
- deeper sleep, muscled are relaxed, and HR is slowed down, BP is falling, breathing is steady and even
- hard to be woken up
Stage 4 of sleep
- dreaming stage
- deepest sleep of all stages
- person usually only wakes if there is a sudden loud noise.
- BP, HR, and brain speed up
when does sleep walking, night terrors, and bed wetting occur
stages 3 &4 of sleep
stage 5 (REM sleep)
- if awakened now..most dreams will be remembered
- REM slows as person wakes
- adults have 3-5 periods of REM a night
- REM is about 90% of time
- brain and eyes move fast
percenatge of time in each sleep stage
- 50% in stage 2 sleep
- 20% in REM
- 30% in other stages
- infants spend 50% in REM
sleep cycles
- 90-110 minutes each cycle
- first cycle of night is short REM periods and long deep sleep periods
- as night progresses–REM increases and deep sleep decreases
- by morning–all sleep is either stage 1 or 2 or REM
Sleep disruptions
-if REM is disturbed, our bodies don’t follow normal sleep cycles next time around–we slip directly into REM until we catch up
sleep needs/ different ages
- infants 18-20 hrs/day
- babies-16 hrs/day
- teens-9hrs/day
- adults 7-8hrs/day
- -needs can fluctuate 5-10hrs
sleep deprivation
- increases effects of alcohol
- negative effects on immune and nervous system
- causes memory problems and clumsiness.
- severe deprivation– mood swings hallucinations
benefits of sleep
- body cells regenerate during sleep
- grow and repair damage caused by ultraviolet rays and stress
most common sleep disorders
- insomnia
- sleep apnea
- narcolepsy
- restless legs syndrome (RLS)
heavy smokers and alcohol use sleep issues
- alcohol deprives person on REM sleep
- smokers often decrease REM sleep because wake every 3-4 hrs from nicotin withdrawal
sleep apnea
-interruption of breathing during sleep
-often associated with obesity, enlarged tonsils, decreased muscle tone due to aging
-airflow obstructed for 10-60 sec while person struggles to breath due to suction collapsing wind pipe
blood oxygen levels fall= person awakes
-person is always sleepy=possible personality change/ depression
sleep apnea risks
- morning headaches, decline in mental functions, disinterest in sex, increased BP, irregular heart beat, increased risk of stroke or MI
- increased risk of MVA’s and sudden respiratory arrest during sleep
how to help sleep apnea
- lose weight, sleep on back, or surgery to remove obstruction
- CPAP (continuous positive airway pressure device) while sleeping
- never take sedatives or sleeping pills
Restless leg syndrome
- hereditary disorder causing unpleasant crawling, prickling, or tingling of legs and feet
- causes person to wake often with urge to move feet
- often associated with anemia, pregnancy, and diabetes
narcolepsy
- sleep attacks at times during the day
- brain is unable to regulate sleep wake cycles normally
- can last a few seconds or over 30mins
- hereditary, brain injury, neurological disease
narcolepsy symptoms
- loss of muscle control
- hallucinations
- disruption of night time sleep
what can help narcolepsy
- stimulants and antidepressants can control symptoms
- naps during the day can help reduce daytime excessive sleepiness
sleep hygiene
- sleep schedules of going to bed and getting up all week
- daily exercise 5-6 hrs before bedtime
- relax watch tv, pray, read, meditate
- avoid alcohol caffeine and nicotine
- comfotable bedroom temperatures
how can we help pts sleep
music
back massage
clean wrinkle free bedding????
Transcelullar
fluid contained within the specialized cavities of the body
- CSF, pleural fluid, digestive secretions
- equals 1 Liter of fluid
Active transport
- substance combines with a carrier on outside of cell surface and move in together but then seperate
- moves against normal concentration gradient from low to high
fluid intake vs fluid output
- driven by thirst mechanism in hypothalmus
- urine- increase w diabtetes, decreae w renal disease
- insensible loss-lungs- increase vs decrease respiration rate-water vapors
- feces
- skin-sweat, fever, burns abrasions
kidneys regulating fluids
conserves and excretes
- excretes-1200-1500 cc water daily
- minimum output-500 cc/day
- filters 135-180 L of plasma/day
- conserves w/ dehydration or less intake
how do kidneys know when to excrete or conserve with increased serum osmolality
- regulated by antidiuretic hormone-hypothalmus
- ADH production- ^ in distal tubule permeability- ^ of reabsorption of water into the blood- decreased urine output
how do kindeys know when to excrete or conserve with decreased serum osmolality
- ADH suppression- decreased distal tubule permeability- decreased reabsorption of water into the blood- increased urine output
selective retention and excretion by kidneys: renin angiotensin aldosterone mechanism
INCREASES BLOOD VOLUME
- decreased blood flod or BP to kindeys- the release of renin-conversion of angiotensinogen ro angiotensin I to II- promotion of Na+ and H2Oretension to increase blood volume
- release of aldosterone is also stimulated which promotes Na+ retention
when does renin system kick in
- when blood vol is low if BP is low the heart gets the blood first- kidneys see this so increase blood vol
- renin causes retention of Na+, if you retain salt water will follow so this will ^ blood vol
Selective retention and excretion by kidneys: Atrial natriuretic Hormone
DECREASES BLOOD VOLUME
- released from the cell of the heart in response to excess blood vol and stretching of atrial walls
- secreted w/ ^ BV–CHF, renal failure, increased BP
- it causes renal excretions of Na+ & water, vasodilation, decreases BV and increases osmolality serum
isotonic imbalance
-water & electrolytes are lost or gained in equal proportions so osmolality remains constant
osmolality
solute concentration
hypovolemia vs hypervolemia
- fluid volume deficit
- fluid volume excess
hypotonic vs hypertonic
- lower osmolality (less solute)
- higher osmolality (more solute)
oslmolar balance
loss or gain of only water so osmolality of serum is altered
hyperosmoolar vs hypoosmolar
- dehydration-increased solute
- overhydration-decreased solute
isotonic solutions
- 0.9% NS
- Lactated Ringers
- D5W 5% dextros in water
When are isotonic solutions used
- used to expand the intravascular compartments & restore vascular volume by remaining in compartments
- used with hypotension and hypovolemia
hypertonic solutions
- Dextrose solution
- 5% dextrose in NS-(D5NS)
- 5% dextrose in 1/2 NS-(D5 1/2NS)
- 5% dextrose in LR-(D5LR)
When would you use Hypertonic solutions
- water moves from cells (intracelular) into interstitial space then to vascular compartments - dilutes blood concentration
- not used for dehydration!
- used with edema
D5W
isotonic on inital administration but then provides free water when dextrose is metabolized- expands intracelullar and extracelullar volumes
-not used for pt at risk for intracranial pressure
Hypotonic solutions
- 0.45% NaCl (half normal saline)
- 0.33% NaCl (1/3 normal saline)
when would you use hypotonice solutions
- provide free water and treats celullar dehydration
- water moves from vascular compartments into interstitial space and into cells
- cells will expand–not for cerebral edema!!
Sodium 135-145 mEq/L
- most abundant cation in ECF and greatest determinant of serum osmolality(solute concentration)
- reg of water balance when reabsorbed from tubules
- chloride and water reabsorbed with it to maintain ECF vol
- transmits nerve impulses
continuous or excess excretions =
hyponatremia- water imbalance
GI loss, sweating, diuretics
hyponatremia
- low solute concentration in vascular compartment d/t excretions leaving a higher solute concentration in interstitial space and cells-cells swell bc water is pulled to higher solute
- water intoxiacation
hypernatremia
- thirst mechanism helps to prevent it-shouldn’t happen
- increase solute in ECF-increase pull of water from cells=cell dehydration
Potassium 3.5-5mEq/L
- main cation in ICF ( sm amount in ECF)
- regulates ICF osmolality
- needed for healing and growth
- helps promote conduction of nerve impulses
- VITAL for skeletal, cardiac function, & smooth muscle activity
- kidneys excrete about 80% of all K+
hypokalemia
- t be stored by body must be digested by daily
- lost with heavy perspiration and poor intake
- losses- vomiting, gastric suction, K+ wasting diuretics
hypokalemia can cause
-causes muscle weakness, leg cramps, fatigues, anorexia, N/V, decreased BS, and decreased motility, cardiac disrhythmias, decreased reflexes, weak and irreg pulse, and numbness
Hyperkalemia
- > 5
- more dangerious than hypo
- increased intake and K+ sparing diuretics–disfunctioning kidneys
Hyperkalemia can cause
- Cardiac arrest, GI hyperactitity, diarrhea, irritability, confusion, cardiac dysrhythmias, decreased HR, muscle weakness, absence of reflexes,paresthesias(tingling pricking) & numbness of extremities
K+ usual dose
- must be diluted
- 20-40 mEq/L
Magnesium
- 1.5-2.5 mEq/L
- abundant cation in ICF
- needed for intracelullar metabolism-ATP production, protein and DNA synthesis, regulator of neuromuscular, and cardiac function