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Related Concept Videos

Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

1.6K
Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
Step 3: Assess the patient's...
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Temperature Measurement Sites01:14

Temperature Measurement Sites

4.3K
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...
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Related Experiment Video

Updated: Apr 21, 2026

Author Spotlight: Improving Lesion Contiguity in Pulmonary Vein Isolation via Proactive Esophageal Cooling
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Variability in Tissue Interface Temperature During Pulse Field Atrial Ablation: Implications for Real-Time Contact

John R Power1, Keita Watanabe1, Masaya Shinohara1

  • 1Department of Cardiology, Helmsley Electrophysiology Center, Mount Sinai Fuster Heart Hospital, Icahn School of Medicine at Mount Sinai, New York, NY.

Circulation. Arrhythmia and Electrophysiology
|April 20, 2026
PubMed
Summary
This summary is machine-generated.

Pulsed field ablation (PFA) temperatures vary significantly, with lower readings at certain pulmonary vein sites. Electrode tip-tissue interface temperature dynamics during PFA were characterized, showing correlation with lesion depth.

Keywords:
atrial fibrillationcatheterselectroporationpulmonary veinsswinetemperature

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Area of Science:

  • Electrophysiology
  • Medical Devices
  • Cardiac Ablation

Background:

  • Pulsed field ablation (PFA) utilizes low-intensity heating at the catheter-tissue interface.
  • A novel large-focal PFA catheter allows for direct measurement of tip-tissue interface temperature.
  • Characterizing temperature dynamics is crucial for understanding PFA efficacy and safety.

Purpose of the Study:

  • To characterize the electrode tip-tissue interface temperature dynamics during pulsed field ablation (PFA).
  • To evaluate the association of anatomical location and procedural parameters with interface temperatures.
  • To correlate lesion dimensions with interface temperatures in a preclinical model.

Main Methods:

  • Retrospective analysis of 2779 PFA lesions in 41 atrial fibrillation patients using a lattice-tip catheter.
  • Interface temperatures measured via catheter tip thermocouples and grouped by anatomic location.
  • Mixed-effects modeling to assess predictors of temperature; swine study for lesion dimension correlation.

Main Results:

  • Mean peak temperature was 41.7°C (range 37.2-52.8°C); average temperature was 39.5°C (range 36.4-46.9°C).
  • Temperatures >50°C occurred in 0.4% of lesions, predominantly in the anterosuperior left superior pulmonary vein.
  • Lower temperatures observed at right carina and specific right superior pulmonary vein locations; positive correlation between lesion depth and temperature in swine.

Conclusions:

  • Electrode tip-tissue interface temperatures during PFA exhibit significant variability.
  • Right superior pulmonary vein sites may show a blunted temperature response.
  • Peak and average temperatures during PFA correlate with lesion depth, informing procedural optimization.