Related Experiment Video
Updated: Aug 29, 2025
08:22
Measuring Cardiac Autonomic Nervous System ANS Activity in Toddlers - Resting and Developmental Challenges
Published on: February 25, 2016
15.6K
Simple Formula for pH/Impedance Probe Positioning in Children-Time to Update Standard Practice?
Tomáš Strachan1, Martin Ďuriček2, Peter Ferenc1
1National Institute of Children's Tuberculosis and Respiratory Diseases, Dolny Smokovec, Slovakia.
Indian Journal of Pediatrics
|September 7, 2022
Summary
A new formula accurately places pH probes in children aged 3 and older, achieving an 85% success rate. This method simplifies pH-metry procedures, potentially reducing the need for X-ray adjustments.
Area of Science:
- Pediatric Gastroenterology
- Medical Device Technology
Background:
- Accurate pH probe placement is crucial for diagnosing gastroesophageal reflux disease in children.
- Existing methods for pH probe placement have variable accuracy and may require fluoroscopic guidance.
Purpose of the Study:
- To develop and validate a novel, accurate formula for pH probe placement in pediatric patients.
- To improve the efficiency and success rate of pH-metry procedures.
Main Methods:
- Prospective evaluation of children (3-18 years) undergoing pH-metry.
- Linear regression analysis to derive a formula based on body height and corrected probe position.
- Validation of the formula on an independent cohort and comparison with existing methods.
Main Results:
- A novel formula (L = 0.184x + 4.4 cm) was developed, achieving an 85% success rate in probe placement.
- The new formula demonstrated significantly different probe placement suggestions compared to established methods.
- A height-based table for probe placement depth was created.
Conclusions:
- The developed formula offers an accurate and reliable method for pH probe placement in children aged 3 years and above.
- Routine use of this formula may streamline pH-metry procedures.
- Further research is needed to determine if X-ray adjustment becomes unnecessary with this method.
Related Concept Videos
01:24pH
135.4K
The potential of hydrogen (pH) is a measure of the acidity or basicity of a water-based solution determined by the concentration of hydronium ions (H3O+). In one liter of pure water at neutral pH, there are 1×10−7 moles of hydronium ions. However, the extensive range of hydronium ion concentrations present in water-based solutions makes measuring pH in moles cumbersome. Therefore, a pH scale was developed to convert moles of hydronium ions into the negative logarithm of the hydronium...
135.4K
01:14Temperature Measurement Sites
2.1K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
2.1K
01:17Assessment of apical pulse
1.1K
Assessing the Apical Pulse
Assessing the apical pulse is a critical nursing procedure, particularly indicated for:
Assessing the apical pulse is a critical nursing procedure, particularly indicated for:
1.1K
01:14Assessing Body Temperature - Oral
816
Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
816