DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20195509

A comparison of pain on intravenous injection to two formulations of Propofol, one containing medium chain and long chain triglycerides and the other without medium chain and long chain triglycerides

Swati Pandey, S. S. Smruthi Kiran

Abstract


Background: To assess and compare the Visual Analog Scale (VAS) for pain on intravenous injection in patients receiving the two different formulations of Propofol.

Methods: Total 170 eligible patients were randomized into Group A receiving Propofol MCT/LCT and Group B receiving Propofol LCT. After standard pre-anaesthetic preparation and baseline values recording, the blinded investigator recorded pain intensity after injection of 1mL study drug propofol, using Visual Analog Scale (0-10). Haemodynamic parameters were recorded every minute for 5 minutes. Calculated Propofol dose was injected in 20 seconds, and signs of pain (hand withdrawal, grimacing) were noted. After patient regained full consciousness, recall of injection pain was asked for.

Results: The proportion of patients who experienced pain was similar in both groups (group A: 76/85 =89.41%, group B: 81/85 = 95.29%; statistically not significant (p value=0.247). Patients in group A had longer time for pain onset (11.3 seconds-group A Vs 9.8 seconds-group B; statistically significant, p value =0.008). Pain on injection was higher in Propofol LCT group as compared to Propofol MCT/LCT (VAS scores of group A=3.94±2.0 vs group B = 5.49±1.96; statistically significant; p value = 0.0018). Full dose of Propofol MCT/LCT produced significantly less pain when compared to Propofol LCT (p value = 0.0424). Recall of pain was comparable between the groups. Haemodynamic parameters (Heart rate and Mean Arterial Pressure) remained comparable in both groups.

Conclusions: Pain on injection was higher and statistically significant in Propofol LCT group as compared to Propofol MCT/LCT.


Keywords


Injection pain, Medium chain and long chain triglycerides, Propofol, Visual Analog Scale

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References


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