The nurse is teaching pursed lip breathing to a patient with severe COPD. Which behavior indicates to the nurse that teaching has been effective?
A) Lips are puckered on inhalation.
B) Lips are wide apart on inhalation.
C) Lips are pursed on inhalation and exhalation.
D) Lips are puckered on exhalation.
D) Lips are puckered on exhalation.
Explanation: A) Pursed lip exhalation exerts a back pressure on small airways, helping to hold them open during exhalation. Prolonging the pursed lip exhalation time to approximately twice the inhalation time allows exhalation of inhaled air through narrowed airways, thus limiting air trapping.
B) Pursed lip exhalation exerts a back pressure on small airways, helping to hold them open during exhalation. Prolonging the pursed lip exhalation time to approximately twice the inhalation time allows exhalation of inhaled air through narrowed airways, thus limiting air trapping.
C) Pursed lip exhalation exerts a back pressure on small airways, helping to hold them open during exhalation. Prolonging the pursed lip exhalation time to approximately twice the inhalation time allows exhalation of inhaled air through narrowed airways, thus limiting air trapping.
D) Pursed lip exhalation exerts a back pressure on small airways, helping to hold them open during exhalation. Prolonging the pursed lip exhalation time to approximately twice the inhalation time allows exhalation of inhaled air through narrowed airways, thus limiting air trapping.
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