Abstract
Recently, there has been growing interest in determining the best hygrometry level during noninvasive ventilation (NIV) and its potential influence on outcome. Several factors may influence hygrometry measures, which can be categorized into physical factors, such as the ventilator parameters, mask design, air leaks and the type of humidifier used, and factors related to the patient’s condition, such as the respiratory rate, mouth breathing and oxygen inspiratory fraction needed. In this chapter, we review the available bench and clinical studies that addressed the utility of hygrometry in NIV and discuss the technical limitations of different humidification systems.
Keywords
- Continuous Positive Airway Pressure
- Obstructive Sleep Apnea Syndrome
- Acute Respiratory Failure
- Continuous Positive Airway Pressure Therapy
- Obstructive Sleep Apnea Syndrome Patient
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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- AH:
-
Absolute humidity
- AHRF:
-
Acute hypoxemic respiratory failure
- ARF:
-
Acute respiratory failure
- AWR:
-
Airway resistance
- BPAP:
-
Bi-level positive airway pressure
- COPD:
-
Chronic obstructive pulmonary diseases
- CPAP:
-
Continuous positive airway pressure
- EPAP:
-
End expiratory airway pressure
- Ex-pha:
-
Expiratory phase
- FiO2 :
-
Fraction of inspired oxygen
- HH:
-
Heated humidifier
- HWH:
-
Heated wire humidifier
- IPAP:
-
Inspiratory positive airway pressure
- NIV:
-
Noninvasive mechanical ventilation
- OSAS:
-
Obstructive sleep apnea syndrome
- PIF:
-
Peak inspiratory flow
- RH:
-
Relative humidity
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© 2012 Springer-Verlag Berlin Heidelberg
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Esquinas, A.M., BaHammam, A.S. (2012). Behavior of Hygrometry During Noninvasive Mechanical Ventilation. In: Esquinas, A. (eds) Humidification in the Intensive Care Unit. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02974-5_10
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DOI: https://doi.org/10.1007/978-3-642-02974-5_10
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