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Related Concept Videos

Assessment of blood pressure in brachial artery(two-step method)01:23

Assessment of blood pressure in brachial artery(two-step method)

Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Assessment of blood pressure in brachial artery(one-step method)01:15

Assessment of blood pressure in brachial artery(one-step method)

This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Temperature Measurement Sites01:14

Temperature Measurement Sites

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...
Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.

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Related Experiment Video

Updated: Jun 8, 2026

A Modified Sonographic Algorithm for Image Acquisition in Life-Threatening Emergencies in the Critically Ill Newborn
11:27

A Modified Sonographic Algorithm for Image Acquisition in Life-Threatening Emergencies in the Critically Ill Newborn

Published on: April 7, 2023

Tonometry methods in the pediatric emergency department.

Loren G Yamamoto1, David A Young

  • 1Department of Pediatrics, University of Hawaii John A. Burns School of Medicine, 1319 Punahou Street, Honolulu, HI 96826, USA. Loreny@hawaii.edu

Pediatric Emergency Care
|September 15, 2010
PubMed
Summary

Tonometry accurately measures intraocular pressure, crucial for glaucoma diagnosis. While Tono-Pen tonometry is user-friendly in emergency settings, accuracy can be a concern, especially in sedated pediatric patients.

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Area of Science:

  • Ophthalmology
  • Medical Diagnostics

Background:

  • Intraocular pressure (IOP) measurement is vital for glaucoma diagnosis.
  • Glaucoma is a leading cause of irreversible blindness worldwide.
  • Accurate IOP assessment guides clinical management and treatment decisions.

Purpose of the Study:

  • To review and compare common tonometry methods for IOP measurement.
  • To evaluate the usability and accuracy of different tonometers in clinical practice.
  • To highlight considerations for IOP measurement in emergency and pediatric settings.

Main Methods:

  • Review of Goldmann applanation tonometry (GAT).
  • Review of Schiotz tonometry (ST).
  • Review of Tono-Pen tonometry (TP).

Main Results:

  • Goldmann applanation tonometry is considered a gold standard but requires skill.
  • Schiotz tonometry is less accurate and has largely been replaced.
  • Tono-Pen tonometry offers ease of use, particularly in emergency departments, but has limitations in accuracy.
  • Accurate IOP measurement in pediatric patients may necessitate deep sedation.

Conclusions:

  • Tono-Pen tonometry is a practical option for emergency settings due to its ease of use.
  • Clinical accuracy of Tono-Pen tonometry should be carefully considered.
  • Specialized approaches, including sedation, may be required for accurate IOP measurement in pediatric patients.