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2. Acute severe asthma - Wikipedia

   en.wikipedia.org/wiki/Acute_severe_asthma

   Reduced oxygen saturation levels (but above 92%) are often encountered. Examination of the lungs with a stethoscope may reveal reduced air entry and/or widespread wheeze. [6] The peak expiratory flow can be measured at the bedside; in acute severe asthma, the flow is less than 50% of a person's normal or predicted flow. [6]

3. Peak expiratory flow - Wikipedia

   en.wikipedia.org/wiki/Peak_expiratory_flow

   Measurement of PEFR requires training to correctly use a meter and the normal expected value depends on the patient's sex, age, and height. It is classically reduced in obstructive lung disorders such as asthma. Due to the wide range of 'normal' values and the high degree of variability, peak flow is not the recommended test to identify asthma.

4. Spirometry - Wikipedia

   en.wikipedia.org/wiki/Spirometry

   to diagnose or manage asthma [5] [6] [7] to detect respiratory disease in patients presenting with symptoms of breathlessness, and to distinguish respiratory from cardiac disease as the cause [8] to measure bronchial responsiveness in patients suspected of having asthma [8]

5. Normal Pulse Oximetry Ranges and How to Take a Reading - AOL

   www.aol.com/lifestyle/normal-pulse-oximetry...

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6. Pulmonary gas pressures - Wikipedia

   en.wikipedia.org/wiki/Pulmonary_gas_pressures

   Firstly, as the air enters the lungs, it is humidified by the upper airway and thus the partial pressure of water vapour (47 mmHg) reduces the oxygen partial pressure to about 150 mmHg. The rest of the difference is due to the continual uptake of oxygen by the pulmonary capillaries , and the continual diffusion of CO 2 out of the capillaries ...

7. What Is a Normal Oxygen Level and How Can I Check Mine? - AOL

   www.aol.com/normal-oxygen-level-check-mine...

   One of those vital signs is blood oxygen level, and in the hospital, it’s measured with a pulse oximeter. Patients with Covid-19 can sometimes have relatively mild symptoms and seem to be ...