Oxygen Flow Rate
Oxygen Flow Rate - Related Videos
08:23
Niobium Oxide Films Deposited by Reactive Sputtering: Effect of Oxygen Flow Rate
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Cited by 8 •
2019
Here, we present a protocol for niobium oxide films deposition by reactive sputtering with different oxygen flow rates for use as an electron transport layer in perovskite solar cells.
04:02
Measurement of Oxygen Consumption Rate in Acute Mouse Brain Slices
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2025
Source: Zhi, L. et al., Measurement of Oxygen Consumption Rate in Acute Striatal Slices from Adult Mice. J. Vis. Exp. (2022).This video demonstrates how to measure mitochondrial oxygen consumption rate (OCR) in mouse striatal brain slices. It details the steps for preparing the tissue plate and sensor cartridge, loading them into the flux analyzer, and explains the cellular processes underlying OCR patterns.
13:35
Mass Conservation and Flow Rate Measurements
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The purpose of this experiment is to demonstrate the calibration of a flow passage as a flowmeter using a control volume (CV) formulation [1, 2]. The CV analysis focuses on the macroscopic effect of flow on engineering systems, rather than the detailed description that could be achieved with a detailed differential analysis. These two techniques should be...
05:43
Topical Airway Anesthesia for Awake-endoscopic Intubation Using the Spray-as-you-go Technique with High Oxygen Flow
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Cited by 11 •
2017
The topical anesthetic lidocaine was atomized using a high oxygen flow through the working channel of a flexible intubating endoscope to achieve topical airway anesthesia for awake endotracheal intubation. We prefer this modified spray-as-you-go technique for endoscopic intubation to classical bolus application because of higher patient satisfaction and better compliance.
08:10
Measurement of Oxygen Consumption Rates in Intact Caenorhabditis elegans
0 Views •
Cited by 9 •
2019
Mitochondrial respiration is critical for organismal survival; therefore, oxygen consumption rate is an excellent indicator of mitochondrial health. In this protocol, we describe the use of a commercially available respirometer to measure basal and maximal oxygen consumption rates in live, intact, and freely-motile Caenorhabditis elegans.
FAQs
Delivered concentration depends on more than the setting in liters per minute. Device design determines how oxygen reaches the airway, while breathing pattern affects how much room air enters during inspiration. Consequently, two patients receiving the same flow may inhale different oxygen concentrations, so clinicians interpret the flow setting alongside the delivery device and the patient’s respiratory pattern.
Room-air entrainment dilutes supplemental oxygen as additional air mixes with the delivered gas before or during inspiration. The amount of dilution varies with the delivery system and the patient’s breathing pattern. This mechanism explains why oxygen flow rate alone cannot predict inspired oxygen concentration and why selecting an appropriate device is central to achieving the intended oxygenation support.
Nasal cannulas, simple masks, and other systems handle oxygen differently because their designs influence gas movement and room-air mixing. A flow setting therefore has meaning only within the context of the device being used. Clinicians consider this relationship when adjusting support, since changing the device can alter the inspired oxygen concentration even if the numerical flow remains unchanged.
Adjustment begins with the patient’s clinical need and the oxygenation target, followed by selection of a suitable delivery system and careful titration of the flow. Clinicians then monitor the patient’s response and modify support as needed. This stepwise approach avoids treating the flow number in isolation and helps balance adequate oxygenation with limiting unnecessary oxygen exposure.
After a change, clinicians assess whether the patient is moving toward the intended oxygenation target and whether the delivery system remains appropriate. Monitoring is important because inspired concentration can shift with breathing pattern and room-air entrainment, not just with the flow setting. Accurate observation of response supports timely retitration and helps identify when device selection should be reconsidered.
Flow adjustment is relevant whenever supplemental oxygen is used to support oxygenation, including hypoxemia, respiratory distress, anesthesia, and recovery. The appropriate setting depends on the patient’s condition, the selected delivery device, and the desired oxygenation target. In each situation, clinicians balance support against unnecessary exposure, making titration and monitoring important parts of respiratory care.