Iyer G K, Jindal G D, Pedhnekar S A, Tahilkar K I, Parulkar G B
Bhabha Atomic Research Centre, Parel, Bombay, Maharashtra.
J Postgrad Med. 1990 Oct;36(4):219-21.
Seven patients with history of radiation burn were subjected to impedance plethysmographic investigation at Non-invasive Vascular Laboratory, K. E. M. Hospital. Impedance plethysmograms were recorded from various locations in both the upper extremities in supine and digits of both the hands in supine as well as on hyper-abduction in sitting position. Control values of blood flow index (BFI) and differential pulse arrival time (DPAT) were derived from similar data in 15 normal subjects. It was observed that digits having thinning of epidermis of skin recorded marked decrease in values of BFI and significant change in value of DPAT and these observations correlated well with thermography and vascular scintigraphy. Digits recording significant decrease in BFI, which were clinically normal, were found to have changes in the skin during follow up examination. Thus IPG provided a sensitive modality for detecting ischaemia in early stages in patients with history of radiation injury.
7例有放射性烧伤病史的患者在K.E.M.医院的无创血管实验室接受了阻抗体积描记法检查。在仰卧位时，记录了双上肢不同部位以及双手手指的阻抗体积描记图，同时在坐位过度外展时也进行了记录。血流指数（BFI）和差分脉冲到达时间（DPAT）的对照值来自15名正常受试者的类似数据。观察到皮肤表皮变薄的手指BFI值明显降低，DPAT值有显著变化，这些观察结果与热成像和血管闪烁造影结果相关性良好。在随访检查中发现，临床上正常但BFI显著降低的手指皮肤有变化。因此，阻抗体积描记法为检测有放射损伤病史患者的早期缺血提供了一种敏感的方法。
