PHYSIOLOGICAL EFFECTS OF IPPB
1) increased mean airway pressure 2) increase tidal volume 3) decreased work of breathing 4) alteration of inspiratory and expiratory time 5) mechanical bronchodilation 6) cerebral blood flow alteration
DECREASED COMPLIANCE results in
an a decreased delivered Vt, when giving a IPPB treatment
INCREASED COMPLIANCE results in
an increased delivered Vt, when giving a IPPB treatment.
DECREASED AIRWAY RESISTANCE results in
an increased delivered Vt, when giving a IPPB treatment
INCREASED AIRWAY RESISTANCE results in
an decreased deliverd Vt, when giving a IPPB treatment
INDICATIONS FOR IPPB THERAPY
-INCREASED WOB -HYPOVENTILATION -ATELECTASIS -PULMONARY EDEMA -DELIVER MEDS TO PT'S WHO CANNOT BREATH IN DEEP -INADEQUATE COUGH -INCREASED AIRWAY RESISTANCE -NEED FOR AID WHEN WEENING FROM MECHANICAL VENTILATOR
HAZARDS OF IPPB THERAPY
-EXCESSIVE VENTILATION (leads to decreased levels of PaCO2) -EXCESSIVE OXYGENATION (in COPD pt's who's normal PaO2 is 50-65mmHg) -DECREASED CARDIAC OUTPUT -INCREASED ICP -PNEUMOTHORAX -HEMOPTYSIS -GASTRIC DISTENTION -NOSOCOMIAL INFECTION
ABSOLUTE CONTRAINDICATION OF IPPB THERAPY
1) UNTREATED PNUEMOTHORAX (IPPB is safe for the pt. with a pnuemothorax who have a chest tube in place) 2) PULMONARY HEMORRHAGE
How do you decrease INSPIRATORY TIME on a IPPB machine?
INCREASE FLOW RATE
How do you increase INSPIRAORY TIME on a IPPB machine?
DECREASE FLOW RATE
When you increase PRESSURE on a IPPB machine, what happens to the Vt?
the Vt increases
When you decrease PRESSURE on a IPPB machine, what happens to the Vt?
the Vt decreases
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