Infrared Thermometer: an accurate tool for temperature measurement during renal surgery

Marchini, Giovanni Scala; Duarte, Ricardo Jordão; Mitre, Anuar Ibrahim; Tiseo, Bruno Camargo; Cassao, Valter Dell'Acqua; Torricelli, Fábio César Miranda; Arap, Marco Antônio; Srougi, Miguel

doi:10.1590/s1677-5538.ibju.2013.04.16

Cited by 6 publications

(3 citation statements)

References 19 publications

(25 reference statements)

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“…At set time intervals (after procurement, UW flushing, cold storage, and backtable preparation, at the start of WIT2, after 10, 20, and 30 min, at reperfusion, and 10 min afterward), kidney temperature was measured using a noncontact infrared thermometer (Voltcraft®, IR 800‐20D Thermometer, Conrad Electronic, Sweden) . The thermometer has a double laser with sharp‐point optics for target localization with a pickup time of <150 ms and a basic accuracy of 2%.…”

Section: Methodsmentioning

confidence: 99%

Kidney temperature course during living organ procurement and transplantation

et al. 2016

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Little is known about the actual kidney graft temperature during the 2nd warm ischemia time (WIT2). We aimed to determine the actual temperature course of the WIT2, with emphasis on the 15 °C metabolic threshold. Data of 152 consecutive adult living donor kidney transplantations were collected. The mean WIT2 was 41.3 ± 10.1 (SD) minutes with a temperature of 5.4 °C at baseline which gradually increased to 13.7, 17.4, and 20.2 °C after 10, 20, and 30 min, respectively. The percentage of kidneys with a temperature of 15 °C or higher was 81.2% after 20 min and 97.5% after 30 min. Duration of surgery (95% CI: -0.017 to -0.002, P = 0.02), multiple veins (95% CI: 0.0003-2.720, P = 0.05) and WIT2 (95% CI: 0.016-0.099, P = 0.006) were associated with a rapid temperature increase. No correlation could be determined between a rapid temperature rise and diminished graft function. This study showed a rapid increase in kidney temperature during WIT2, wherein the 15 °C threshold was reached within 20 min in more than 80% of the patients.

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Section: Methodsmentioning

confidence: 99%

Kidney temperature course during living organ procurement and transplantation

et al. 2016

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“…Indirect measurement will need to accompany the methods of the testing. One of the provided methods is using infrared thermal measurements, which can measure the temperature without physical contact [13], [14]. This method will calculate the temperatures based on the emerging infrared wave [15].…”

Section: A Temperature Validation Problem On Sealedmentioning

confidence: 99%

Wireless Temperature Measurement Validation Method for PCR Machines by Magnetic Hall-Effect Sensor

Agmal

Prakosa²

2022

J. Elektron. dan Telekomun.

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The temperature validation controlled by temperature indication has a vital role in the polymerase chain reaction (PCR) test machine or thermal cycler. However, the validation process is complicated for several types of thermal cycler. Some PCR test machines must close the lid tightly while running. It makes the probe’s cable of the temperature sensor might be pinched or break when the thermal cycler lid is closed. Opening the lid (open-air condition) makes the measurement will not accurate. To solve this problem, wireless temperature measurement and validation methods for PCR machines are developed based on magnetic field measurements. The magnetic field of the object will respond to any changes in temperature. The hall-effect sensor, which is validated by gauss meter, detects any magnetic response a certain material covers even the object. This detection yields output data processed to find the thermal cycler's appropriate temperature wireless validation method. The experiment used a Neodymium magnet as a wireless probe. The position of the Neodymium magnet pole significantly affected the relation between magnetic flux and temperature in experimental results. The reversed pole toward sensors had better linearity (R2= 0.8062) than the unreversed pole (R2= 0.7794). The annealing step commonly achieved the optimum measurement uncertainty. However, the measurement uncertainty and signal sensitivity investigation recommended employing the beneficial combination of pole magnet position to design the temperature validator based on magnetic induction for a closed lid thermal cycler (PCR machine). Overall, the experimental yields can be used to build a wireless temperature validator for a sealed PCR machine based on magnetic induction.

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“…At set time intervals (after procurement, UW flushing, cold storage, and backtable preparation, at the start of WIT2, after 10, 20, and 30 min, at reperfusion, and 10 min afterward), kidney temperature was measured using a noncontact infrared thermometer (Voltcraftâ, IR 800-20D Thermometer, Conrad Electronic, Sweden) [11]. The thermometer has a double laser with sharppoint optics for target localization with a pickup time of <150 ms and a basic accuracy of 2%.…”

Section: Temperature Measurementmentioning

confidence: 99%

Kidney temperature course during living organ procurement and transplantation

Kuipers

Hofker

Haveman

et al. 2014

Transplant Immunology

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Little is known about the actual kidney graft temperature during the 2nd warm ischemia time (WIT2). We aimed to determine the actual temperature course of the WIT2, with emphasis on the 15°C metabolic threshold. Data of 152 consecutive adult living donor kidney transplantations were collected. The mean WIT2 was 41.3 AE 10.1 (SD) minutes with a temperature of 5.4°C at baseline which gradually increased to 13.7, 17.4, and 20.2°C after 10, 20, and 30 min, respectively. The percentage of kidneys with a temperature of 15°C or higher was 81.2% after 20 min and 97.5% after 30 min. Duration of surgery (95% CI: À0.017 to À0.002, P = 0.02), multiple veins (95% CI: 0.0003-2.720, P = 0.05) and WIT2 (95% CI: 0.016-0.099, P = 0.006) were associated with a rapid temperature increase. No correlation could be determined between a rapid temperature rise and diminished graft function. This study showed a rapid increase in kidney temperature during WIT2, wherein the 15°C threshold was reached within 20 min in more than 80% of the patients.

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Infrared Thermometer: an accurate tool for temperature measurement during renal surgery

Cited by 6 publications

References 19 publications

Kidney temperature course during living organ procurement and transplantation

Kidney temperature course during living organ procurement and transplantation

Wireless Temperature Measurement Validation Method for PCR Machines by Magnetic Hall-Effect Sensor

Kidney temperature course during living organ procurement and transplantation

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