circadian rhytm sleep disorder

Question 1

define circadian rhythm sleep disorder

Answer 1

involves sleep disturbance that is primarily due to a mismatch between and individual’s sleep-wake pattern and the pattern that is desired or required

Question 2

what are the causes of circadian rhythm sleep disorders

Answer 2

• a naturally occurring change or a malfunction of biological mechanisms or processes regulating the sleep-wake cycle
• a mismatch between and individual’s sleep-wake cycle and the day night cycle of their physical environemnt
  -a mismatch between an individual’s sleep-wake cycle and the sleep wake schedule required by their school, work or social schedule

Question 3

delayed sleep phase syndrome

Answer 3

• a condition in which the major sleep episode is delayed in relation to the desired sleep time or what is considered a conventional time
• tendency to sleep later and thus wake up later than what is normal
• sleep-wake cycle is significantly delayed, often by 2-3 hours

Question 4

symptoms of delayed sleep phase syndrome

Answer 4

• tends to emrge/qorsen during adolescents and young adults and continue into early adulthood
• affects 7-15% of adolescents/young adults

Question 5

shift work disorder

Answer 5

Night shift work in particular disrupts your biological programmed cycle and can cause shift work disorder.
- individual who are more permanent night shift are more likely to have this disorder than people who do not do shift work
- they get a reduction in sleep amount (1-4 hours lost)
- tendency to sleep twice during the day (big sleep in the morning and then a nap before going to work)

Question 6

sympyoms to shift work disroder

Answer 6

• accumulate sleep debt
• difficult to fall asleep or maintain sleep during the day despite optimising environmental conditions (insomnia)
• difficulty with awakening and be unsatisfied with their sleep
• fragmented sleep
• excessive sleepiness is often experience during the night where they should be alert

Question 7

what is bright light therapy

Answer 7

a method used to adjust a person’s circadian rhythm through exposure to high intensity light source
- overtime, it works to readjust the circadian rhythm, thus making their sleep - wake cycle more suitable

Question 8

how does bright light therapy work

Answer 8

• when an individual is exposed to a light source, the suprachiasmatic nucleus will be signed, promoting wakefulness through the release of cortisol. this will then trigger an earlier release of melatonin by the pineal gland

Question 9

bright light therapy to help DSPS

Answer 9

• exposed in the morning, act as an external cue to the SNC to promote wakefulness and signals melatonin to be released earlier

Question 10

birhgt light therapy for ASPD

Answer 10

• exposed in the evening when feeling sleepy, help the SCN to send signals to releasse melatonin and thus promoting sleep

Question 11

shift work - bright light therapy

Answer 11

• best to be exposed to the bright light source before beginning their shift wrk, in orer to promote wakefulness to be awake.