Effect of Local Cold Therapy on Arterial Blood Oxygen Saturation and Temperature Changes in Patients Undergoing Surgery

Background: Postoperative complications can endanger the patient's life and disrupt the recovery process if not properly managed. Local cold therapy can be a safe non-pharmacologic method to manage these side effects; however, it has not been highly considered. Objectives: This study was done to determine the effect of local cold therapy on arterial blood oxygen saturation and temperature changes in patients undergoing surgery. Methods: This quasi-experimental study was performed at Shahrekord University of Medical Sciences in 2019 on 60 patients undergoing thoracic and abdominal surgery selected by convenience sampling, and they were randomly assigned to the intervention and control groups. The intervention (local cold therapy) was performed for 48 hours after full consciousness, three times a day for 20 minutes to the intervention group. Data were collected before and after the intervention using a demographic questionnaire, pulse oximetry device, and thermometer. The data were analyzed based on the independent samples t-test, paired-samples t-test, and chi-square and Fishers’ exact tests by SPSS version 20 software. Results: The mean arterial blood oxygen saturation percentage (O2Sat%) during the intervention significantly increased in both groups (P < 0.05), but the rate of increase was significantly higher in the local cold group (P < 0.05). The results of within-group research showed that the mean temperature had significant differences in the local cold therapy group (P < 0.05), but the mean body temperature did not show a significant difference between the two groups (P < 0.05). Conclusions: Local cold therapy can be effectively trained and used by nurses to improve the O2Sat%. It did not affect postoperative body temperature. Further studies must be conducted to investigate the effects of local cold therapy on postoperative body temperature changes.

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IN SITU MONITORING OF MEAN BLOOD OXYGEN SATURATION USING EXTENDED MODIFIED LAMBERT BEER MODEL

Biomedical Engineering Applications Basis and Communications ◽

10.4015/s1016237215500040 ◽

2015 ◽

Vol 27 (01) ◽

pp. 1550004 ◽

Cited By ~ 2

Author(s):

Audrey K. C. Huong ◽

Xavier T. I. Ngu

Keyword(s):

Oxygen Saturation ◽

In Situ Monitoring ◽

Blood Oxygen ◽

Optical Monitoring ◽

Hypertension Status ◽

Blood Oxygen Saturation ◽

Fitting Procedure ◽

Arterial Blood ◽

The Mean

We present the use of Extended Modified Lambert–Beer model for optical monitoring of mean blood oxygen saturation ( S m O 2) via a fitting procedure. This work focuses on the absorption characteristics of hemoglobin derivatives in the wavelength range of 520–600 nm to give the best estimates of S m O 2. The study of the feasibility of applying this analytic method to skin oximetry is via spectroscopy data collected from fingertips of four healthy volunteers both at rest and during arterial blood occlusion condition. The results revealed a decrease in the mean of mean and standard deviation of S m O 2 value of fingertips from 94.5 ± 2.19% when volunteers were at rest to 56.76 ± 5.8% during the arterial blood occlusion measurement. The larger variation in the value estimated for blood occlusion condition could be a result of differences in volunteers' physical fitness and hypertension status. These estimated S m O 2 values agreed reasonably well with the value reported in most of the previous studies. This work concluded that the proposed technique can potentially be used as a complementary technique to clinical assessment of skin grafts and burnt skin.

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