What are two physiological changes that impact chest wall movement?
- pregnancy
- obesity
What are some alterations to respiratory functions?
- Hypoventilation
- Hyperventilation
- Hypoxia
What is the definition of hypoventilation?
- occurs when alveolar ventilation is inadequate to meet O2 demands
- occurs when alveolar ventilation is not sufficient enough to eliminate proper CO2 amounts
What is retained during hypoventilation?
- CO2
What does hypoventilation cause?
respiratory acidosis
What is the definition of hyperventilation?
- Lung removes CO2 faster than it is produced via cellular metabolism
,What is hyperventilation caused by?
- severe anxiety
- infection
- drugs
- acid-base imbalance
What are some signs / symptoms of hyperventilation?
- Rapid respiration
- sighing breaths
- numbness / tingling in hands/ feet
- light headedness
- loss of consciousness
What is the definition of hypoxia?
- inadequate tissue oxygenation at the cellular level.
What does hypoxia result from?
- deficiency in O2 delivery
- deficiency of O2 utilization at a cellular level
What can cause hypoxia to occur?
- decreased level of hemoglobin & lowered O2 carrying capacity of blood
- diminished concentration of inspired O2 at higher altitudes
- inability of tissue extraction O2 from the blood (cyanide poisoning)
- decreased diffusion of O2 from the alveoli to the blood (pneumonia)
- poor tissue perfusion w/ oxygenated blood
- impaired ventilation
What sickness / disease can cause hypoxia to occur?
- pneumonia
What physiological changes to the body can cause hypoxia?
What does one utilize percussion for when assessing the lungs?
- detects presence of abnormal fluid / air in lungs
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