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Related Concept Videos

Guidelines For Measuring Vital Signs01:19

Guidelines For Measuring Vital Signs

Following these guidelines can help nurses accurately measure vital signs, assess changes in patient conditions, and provide timely treatment when necessary. Adhering closely to the guidelines ensures the accuracy and reliability of the results.
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

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.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important. 
Respiratory Assessment: Purpose and Indications01:19

Respiratory Assessment: Purpose and Indications

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.
Objectives and Importance:
The primary goal of respiratory assessment is to evaluate patients at early risk of clinical deterioration. Since respiratory distress often precedes other signs of declining health, breathing patterns and sounds become a...
Teeth01:15

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
Pulse Oximetry01:24

Pulse Oximetry

Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...

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Related Experiment Video

Updated: Jun 11, 2026

A Model to Simulate Clinically Relevant Hypoxia in Humans
09:54

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Reference Values for Pulse Oximetry Testing in Permanent Teeth: A Systematic Review and Meta-Analysis.

Lilian Tietz1, Theodoro Weissheimer1, Cassiano Kuchenbecker Rösing1

  • 1School of Dentistry, Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil.

International Endodontic Journal
|April 8, 2026
PubMed
Summary
This summary is machine-generated.

This study establishes normal pulp oxygen saturation ranges for healthy permanent teeth using pulse oximetry, finding values between 86.26% and 91.73%. These reference values aid clinical assessment but require further standardization for routine use.

Keywords:
dental pulpdiagnosisendodonticsmeta‐analysisoxygen saturationpulse oximetry

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Area of Science:

  • Dentistry
  • Endodontics
  • Biomedical Engineering

Background:

  • Pulse oximetry is a valuable diagnostic tool for assessing dental pulp vitality.
  • Normal oxygen saturation levels for specific tooth types using pulse oximetry are not well-defined.
  • Establishing reference values is crucial for accurate pulp condition assessment.

Purpose of the Study:

  • To determine reference values for pulse oximetry in permanent teeth with healthy pulps and complete root formation.
  • To systematically review and meta-analyze existing data on pulp oxygen saturation.
  • To answer the clinical question regarding normal pulse oximetry readings for specific teeth.

Main Methods:

  • A systematic review and meta-analysis adhering to PRISMA guidelines.
  • Comprehensive searches of multiple electronic databases (Cochrane, Embase, PubMed, Scopus, OpenGrey) up to September 2025.
  • Inclusion of 40 clinical studies, with meta-analysis of oxygen saturation values from 3537 teeth using a random-effects model.

Main Results:

  • Meta-analysis revealed mean pulp oxygen saturation ranging from 86.26% in maxillary lateral incisors to 91.73% in mandibular incisors.
  • Data from 40 studies, including 3537 teeth, were analyzed.
  • Highest mean saturation observed in mandibular incisors (91.73%), lowest in maxillary lateral incisors (86.26%).

Conclusions:

  • Preliminary reference values for pulp oxygen saturation in healthy permanent teeth range from 86.26% to 91.73%.
  • These findings support the clinical utility of pulse oximetry for pulp assessment.
  • Further standardization is recommended for routine clinical application of pulse oximetry in dentistry.