week 10

This week I present about the sensor that I have to used.That is FSR sensor. Force Sensing Resistors are a polymer thick film(PTF) device which exhibits a decrease in resistance with an increase in the force applied to the active surface. This is the website that tells us about FSR sensor.
http://www.ladyada.net/learn/sensors/fsr.html
www.techstorm.co.kr/Download/fsr-sensor.pdf

week 9

On this week, I have research my new title,'mouth assessment'.Below are the website that about 'mouth assessment;
(1) http://en.wikipedia.org/wiki/Mouth_assessment
On this website, mention about description of mouth,what inside the mouth and the importance health.Mouth is very important to our digestive system and respiratory system.
(2) http://www.slideshare.net/kharr/assessment-of-the-mouth-nose
On this website, is about physical assessment of mouth and throat.It is also about inspection of lips,inspect the buccal mucosa,inspect palpate and tongue,assess the ventral surface of the tongue, inspect of Wharton's duct,observe the side of tongue,check the strenght of the tongue,check the anterior tongue's ability to taste,inspect tonsils, and others.

week 8

I have to change my current title.This is because the motor that I want to used as a part of my project component does not have suitable pressure and valve.So that, I change my title to 'mouth assessment' as my new project.

week 7

on this week, I would like to present about the what is microphone and the characteristics about microphone generally.Below is the web that related to the characteristic of microphone.

http://www.btinternet.com/~paformusic/mics.htm

This website also tell us how microphone work

http://www.mediacollege.com/audio/microphones/how-microphones-work.html

week 6

http://www.vaughns-1-pagers.com/medicine/sleep-apnea.htm

It is about Sleep Apnea - Self Diagnosis and Treatment
Self-Diagnosis - MAD Device - Tilt Bed - Polysomnogram - Treatment

week 5

http://www.japantrendshop.com/hitech-snore-stopper-pillow-p-253.html

On this website, have a snore pillow made from Japan. Below is the video about how the pillow works.

week 4

Title : Obstructive Sleep Apnoea (OSA)

Figure 1: Diagrammatic an open airway during sleep

Figure 2 : A blocked airway

The blockage shown is caused by the soft tissue at the base of the tongue collapsing and preventing the flow of air.

During sleep, the OSA sufferer cycles through a series of events:

• The airway becomes blocked and the sufferer does not breathe,

• Blood oxygenation saturation (SaO2) decreases, causing the heart to pump faster,

• The sleeper arouses to open their airway and breathe,

• The sufferer falls asleep again.

Diagnosing OSA

The gold standard in diagnosis of OSA is polysomnography. Originally developed by Dr. Nathaniel Kleitman at the University of Chicago in the 1950s, polysomnography takes multiple physiological measurements of the patient being studied. This combined data is used in the diagnosis of apnoea events. The physiological measurements recorded can include:

•              Electroencephalogram EEG (brain electrical activity)

•              Electroculogram EOG (eye movement)

•              Electromyogram EMG (jaw muscle movement)

•              Leg muscle movement

•              Airflow

•              Respiratory effort (chest and abdominal excursion)

•              Electrocardiogram ECG

•              Oxygen saturation SaO2

•              Audio and visual recording of nocturnal sounds and movements

Stage 0 (or preclinical)	Sporadic obstructive apnoeas
Stage I (or initial)	Obstructive apnoeas persisting during light (stage 1-2) and REM sleep
Stage II (or overt)	Obstructive apnoeas persisting for the whole length of sleep
Stage III (or complicated)	Alveolar hypoventilation persisting during wakefulness.

Table 1. Four stage scale of snoring noises proposed by Lugaresi et el.

Treatment of OSA

It was between 1960 – 1980 that OSA was clearly defined as a clinical disease and the only clinical treatment was surgical intervention (3). In 1981 a device was described that kept the airway open by passing a continuous stream of air through the airway, which is known as Continuous Positive Airway Pressure (CPAP) (5). This device is the method of choice for prevention of airway blockage for sufferers of OSA.

 

Snoring Detector

One simple method to screen a person for potential OSA in their own home is the analysis of their snore sounds. The basic premise behind these studies was to determine whether the snoring sound generated was related to OSA status.