Bagavathiappan Subramnaiam, Philip John, Jayakumar Tammana, Raj Baldev, Rao Pallela Narayana Someshwar, Varalakshmi Muthukrishnan, Mohan Viswanathan
Indira Gandhi Centre for Atomic Research, Kalpakkam, India.
J Diabetes Sci Technol. 2010 Nov 1;4(6):1386-92. doi: 10.1177/193229681000400613.
Diabetic neuropathy consists of multiple clinical manifestations of which loss of sensation is most prominent. High temperatures under the foot coupled with reduced or complete loss of sensation can predispose the patient to foot ulceration. The aim of this study was to look at the correlation between plantar foot temperature and diabetic neuropathy using a noninvasive infrared thermal imaging technique.
Infrared thermal imaging, a remote and noncontact experimental tool, was used to study the plantar foot temperatures of 112 subjects with type 2 diabetes selected from a tertiary diabetes centre in South India.
Patients with diabetic neuropathy (defined as vibration perception threshold (VPT) values on biothesiometry greater than 20 V) had a higher foot temperature (32-35 °C) compared to patients without neuropathy (27-30 °C). Diabetic subjects with neuropathy also had higher mean foot temperature (MFT) (p=.001) compared to non-neuropathic subjects. MFT also showed a positive correlation with right great toe (r=0.301, p=.001) and left great toe VPT values (r=0.292, p=.002). However, there was no correlation between glycated hemoglobin and MFT.
Infrared thermal imaging may be used as an additional tool for evaluation of high risk diabetic feet.
糖尿病神经病变有多种临床表现，其中感觉丧失最为突出。足部温度升高加上感觉减退或完全丧失会使患者易患足部溃疡。本研究的目的是使用无创红外热成像技术研究足底温度与糖尿病神经病变之间的相关性。
红外热成像作为一种远程非接触式实验工具，用于研究从印度南部一家三级糖尿病中心选取的112例2型糖尿病患者的足底温度。
糖尿病神经病变患者（定义为使用生物感觉测量仪测得的振动觉阈值（VPT）值大于20 V）的足部温度（32 - 35°C）高于无神经病变的患者（27 - 30°C）。与无神经病变的受试者相比，患有神经病变的糖尿病受试者的平均足部温度（MFT）也更高（p = 0.001）。MFT与右大脚趾（r = 0.301，p = 0.001）和左大脚趾VPT值（r = 0.292，p = 0.002）也呈正相关。然而，糖化血红蛋白与MFT之间没有相关性。
红外热成像可作为评估糖尿病高危足的辅助工具。
