Monitoring changes in heart tissue temperature and evaluation of graft function after coronary artery bypass grafting surgery

Lekas, Raimundas; Jakuška, Povilas; Kriščiukaitis, Algimantas; Veikutis, Vincentas; Dzemyda, Gintautas; Mickevičius, Tomas; Morkūnaitė, Kristina; Vilkė, Alina; Treigys, Povilas; Civinskienė, Genuvaitė; Andriuškevičius, Jonas; Vanagas, Tomas; Skauminas, Kęstutis; Bernatonienė, Jurga

doi:10.3390/medicina45030029

Cited by 4 publications

(6 citation statements)

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“…was to determine the relationship between the temperature fall of the heart surface revealed in thermovision and the risk of arrhythmias. The research showed that a temperature fall of more than 2° increases the risk of arrhythmias, mainly ventricular fibrillation [ 15 ]. Similar observations were made by Papp et al ., who observed the temperature fall of the myocardium after ligation of the coronary vessel [ 16 ].…”

Section: Discussionmentioning

confidence: 99%

The use of thermography in early detection of tissue perfusion disorders in rats.

Łokaj

Czapla

Falkowski

et al. 2014

Videosurgery and Other Miniinvasive Techniques

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IntroductionTissue perfusion disorders can be present in various diseases and progress in the form of arterial ischemia or venous stasis with accompanying local changes in temperature.AimTo use of thermography in the diagnostics of early periods of tissue perfusion disorders before the clinical symptoms occur.Material and methodsThirty-two male rats were used. After anesthesia the skin on lower limbs was shaved and femoral vessels of both sides were exposed. In 10 rats the left femoral artery was ligated, in 12 rats the left femoral vein was ligated and in the 10 remaining rats both left femoral vessels were ligated. Thermography of the limbs was performed before the vessels were ligated and after a period of 24 h. The pictures were taken every 5 s during 3 min. Before the measurement, the tissues were cooled down for 20 s with a 5°C water compress. The rate of temperature return to the limbs was evaluated.ResultsStatistically significant differences were observed after the 24-hour period on the thigh after the ligation of the vein, and on the shank and the foot after ligation of the artery. After the ligature of both vessels, statistically significant differences occurred immediately after their ligature within the thigh and shank and after 24 h on the foot.ConclusionsThe results show that cameras with an accuracy of 0.05°C can be used to detect tissue perfusion disorders. The special diagnostic value is the ability to detect perfusion disorders before clinical symptoms occur.

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Section: Discussionmentioning

confidence: 99%

The use of thermography in early detection of tissue perfusion disorders in rats.

Łokaj

Czapla

Falkowski

et al. 2014

Videosurgery and Other Miniinvasive Techniques

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“…This could be interpreted as an improved tissue repair using ultrasound [ 71 ]. In another study in mongrel dogs, Lekas et al [ 72 ] monitored coronary artery bypass grafting and found that thermal imaging can accurately identify ischemic processes due to stenosis or occlusion of the coronary artery. In this sense, ligation of the artery caused a rapid decrease in the epicardial surface temperature from 31 °C to 26–28 °C.…”

Section: Thermal Imaging Applied To Assess Tissular Damage Degree And...mentioning

confidence: 99%

Thermal Imaging as a Method to Indirectly Assess Peripheral Vascular Integrity and Tissue Viability in Veterinary Medicine: Animal Models and Clinical Applications

Mota-Rojas,

Ogi,

Villanueva-García

et al. 2023

Animals

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Infrared thermography (IRT) is a technique that indirectly assesses peripheral blood circulation and its resulting amount of radiated heat. Due to these properties, thermal imaging is currently applied in human medicine to noninvasively evaluate peripheral vascular disorders such as thrombosis, thromboembolisms, and other ischemic processes. Moreover, tissular damage (e.g., burn injuries) also causes microvasculature compromise. Therefore, thermography can be applied to determine the degree of damage according to the viability of tissues and blood vessels, and it can also be used as a technique to monitor skin transplant procedures such as grafting and free flaps. The present review aims to summarize and analyze the application of IRT in veterinary medicine as a method to indirectly assess peripheral vascular integrity and its relation to the amount of radiated heat and as a diagnostic technique for tissue viability, degree of damage, and wound care.

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“…Experiments were performed on eight unisex mongrel dogs of both sexes, according to the permission of the Lithuanian Committee for Ethics of Good Laboratory Animal Use Practice (No. 0053/2005) by standard procedure protocol (Lekas et al, 2009). A standard ECG leads (I, II, III), arterial blood pressure and blood saturation were monitored throughout the study.…”

Section: Investigation Of the Anisotropy Zone Dynamicsmentioning

confidence: 99%

“…In many cases, a sudden death is caused by myocardial ischemia and is accompanied by ventricular arrhythmias. It has been proved that ischemic slowdown of excitation spread provokes the formation of recurrence of arrhythmia, ventricular tachycardia and ventricular fibrillation (Lekas et al, 2009). During coronary artery bypass grafting operations a surgeon requires information regarding the coronary flow, coronary anatomy, and myocardial perfusion.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Thermovisual Data of the Radio-Frequency Impact on the Myocardium Damage

et al. 2010

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In this article, a method is proposed for analysing the thermovision-based video data that characterize the dynamics of temperature anisotropy of the heart tissue in a spatial domain. Many cardiac rhythm disturbances at present time are treated by applying destructive energy sources. One of the most common source and the related methodology is to use radio-frequency ablation procedure. However, the rate of the risk of complications including arrhythmia recurrence remains enough high. The drawback of the methodology used is that the suchlike destruction procedure cannot be monitored by visual spectra and results in the inability to control the ablation efficiency. To the end of understanding the nature of possible complications and controlling the treating process, the means of thermovision could be used. The aim of the study was to analyse possible mechanisms of these complications, measure and determine optimal radio-frequency ablation parameters, according to the analysis of video data, acquired using thermovision.

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Monitoring changes in heart tissue temperature and evaluation of graft function after coronary artery bypass grafting surgery

Cited by 4 publications

References 10 publications

The use of thermography in early detection of tissue perfusion disorders in rats.

The use of thermography in early detection of tissue perfusion disorders in rats.

Thermal Imaging as a Method to Indirectly Assess Peripheral Vascular Integrity and Tissue Viability in Veterinary Medicine: Animal Models and Clinical Applications

Analysis of Thermovisual Data of the Radio-Frequency Impact on the Myocardium Damage

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