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Alveolar Gas Equation Tool

Alveolar Gas Equation Explanation and Clinical Context The alveolar gas equation estimates alveolar oxygen partial pressure PAO2 using inspired oxygen fraction FiO2, barometric pressure Patm, water vapor pressure PH2O, arterial carbon dioxide PaCO2 and respiratory quotient RQ. The formula used here is PAO2 equals FiO2 times Patm minus PH2O minus PaCO2 divided by RQ. Normal PAO2 depends on FiO2 and altitude. At sea le

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Asthma Predictive Index Calculator

Asthma Predictive Index Explanation and Clinical Context The Asthma Predictive Index is a clinical tool developed to identify young children who have recurrent wheezing and who are at higher risk of developing persistent asthma later in childhood. The index is based on the presence of at least three wheezing episodes in one year combined with either one major criterion or two minor criteria. Major criteria include pa