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Related Concept Videos

Oxygen Transport in the Blood01:27

Oxygen Transport in the Blood

Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
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Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
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Oxygen Requirements and Growth Patterns

Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
Respiratory Assessment: Purpose and Indications01:19

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Respiratory assessment is a cornerstone of nursing assessments, crucial for the early detection of patient deterioration. This evaluation transcends routine procedures, representing a critical skill nurses must master to ensure optimal patient care.
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Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
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Updated: May 24, 2026

Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation
07:15

Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation

Published on: December 5, 2025

Evidence for oxygen use in preterm infants.

Monuj Triven Bashambu1, Monika Bhola, Michele Walsh

  • 1Division of Neonatology, Rainbow Babies & Childrens Hospital, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA.

Acta Paediatrica (Oslo, Norway : 1992)
|March 13, 2012
PubMed
Summary

Lower oxygen saturation targets for preterm infants reduce retinopathy of prematurity (ROP) but increase neonatal mortality. Avoid saturation levels of 85-89% until further research is complete.

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Published on: August 19, 2020

Area of Science:

  • Neonatal Medicine
  • Pediatric Respiratory Care
  • Clinical Evidence Synthesis

Background:

  • Clinicians have adopted lower oxygen saturation targets to prevent retinopathy of prematurity (ROP) in preterm infants.
  • Concerns exist regarding the safety and efficacy of current oxygenation protocols for extremely premature neonates.

Purpose of the Study:

  • To critically review existing evidence on the optimal use of oxygen therapy in preterm infants.
  • To evaluate the balance between preventing ROP and minimizing neonatal mortality associated with oxygen saturation targets.

Main Methods:

  • Systematic review of randomized controlled trials (RCTs) and relevant clinical studies.
  • Analysis of data on oxygen saturation levels, ROP incidence, and neonatal mortality rates.

Main Results:

  • Lower oxygen saturation targets effectively reduce the incidence of ROP.
  • However, these lower targets have been associated with a significant increase in neonatal mortality.
  • Current evidence suggests avoiding saturation levels between 85-89%.

Conclusions:

  • While lower saturation targets mitigate ROP, they pose a risk of increased mortality in preterm infants.
  • Optimal oxygen saturation management in preterm neonates requires further investigation.
  • A cautious approach, avoiding saturation levels of 85-89%, is recommended pending results from ongoing trials.