Homework

Learning Package 7.

•If you are unsure of any of these questions, ASK ME FOR HELP

•Due Thursday 9nd October

•No homework = Friday afternoon detention with Miss Tagore –Mityrae, Deneal (can’t make it? – parental note to Miss Tagore explaining why by tomorrow)

•Incomplete or poorly done homework results in Study support (R212) This afternoon at 3:40pm

Key words

•Spirometer

•Lung capacity

•Resuscitation

•Tidal volume

•Vital capacity

Aims from specification(h) describe the use of a spirometer and peak flow meter to measure tidal volume, vital capacity, forced expiratory volume per second (FEV1) and peak expiratory flow rate (PEFR);

(i)analyse and interpret data from a spirometer;

(j) describe the possible causes of respiratory arrest;

(k) explain how expired air resuscitation should be carried out on adults, children and babies in order to maintain blood oxygen concentration.

Tidal Volume and Spirometers

Model answer

(h) describe the use of a spirometer and peak flow meter to measure tidal

volume, vital capacity, forced expiratory volume per second (FEV1) and peak

expiratory flow rate (PEFR);

Spirometer trace: Tidal Volume

• Why does the trace gradually decrease?

• Think about the CO2 absorber (soda lime)

(i) analyse and interpret data from a spirometer;

• Is this person breathing normally?

• Explain why!

Peak expiratory flow rate (PEFR) • The peak expiratory flow

rate (PEFR) is a person's maximum speed of expiration, as measured with a peak flow meter.

• A small, hand-held device used to monitor a person's ability to breathe out air.

• It measures the airflow through the bronchi and thus the degree of obstruction in the airways.

(j) describe the possible causes of respiratory arrest;

• What is respiratory arrest?• http://www.today.com/video/today/5595350

2#55953502• Use page 54 to write causes of respiratory

arrest.

(k) explain how expired air resuscitation should be carried out on adults, children and babies in order to maintain blood oxygen concentration.

Read the procedure for respired air resuscitation on page 54 &55

Complete the following table to compare respired air resuscitation for an adult, child, infant.

Feature of Respired Air Resuscitation

Adult Child Infant

Body position On back

Head position Slight tilt

Rescue breaths YES

Breathing rate Every 5 seconds