Correlation between arterial and end tidal carbon dioxide partial pressure during laparoscopic surgeries
Journal Title: Medpulse International Journal of Anesthesiology - Year 2019, Vol 9, Issue 1
Abstract
Background: End-tidal carbon dioxide pressure (etCO2) monitoring is used as an indirect measure of arterial carbon dioxide partial pressure (PaCO2). To prevent hypercapnia, close intraoperative monitoring of etCO2 or PaCO2 and appropriate ventilatory changes are necessary. Aim: To evaluate the correlation between arterial and end-tidal carbon dioxide during laparoscopic surgeries. Material and Methods: A total of 40 non-obese adult patients of either sex, between 18 to 60 years of age and ASA status I, posted for elective laparoscopic surgery were included. Measurement and comparison done between preinsufflation values of etCO2, a-etCO2 gradient and their respective predesufflation values. Results: In present study, a-etCO2 gradient increased with pneumoperitoneum to 7.58±2.11 mmHg at predesufflation period as compared to 5.55±2.07 mmHg at preinsufflation period and this change of 2.03±1.35 mmHg was found to be highly significant (p<0.001). We observed change in a-etCO2 gradient to be more in Trendelenburg position (2.20±1.51 mmHg) as compared to antitrendelenburg position (1.82±1.15 mmHg); however, this difference is not significant statistically. Change in a-etCO2 gradient has highly significant, positive correlation with duration of pneumoperitoneum (p< 0.001). Conclusion: Increase in a-etCO2 gradient with pneumoperitoneum indicating loss of correlation between etCO2 and PaCO2 during pneumoperitoneum and thus etCO2 is less accurate in reflecting PaCO2.
Authors and Affiliations
Upendra M Kanzarkar, Anjali Savargaonkar
Keywords
Related Articles
- EP ID EP440227
- DOI 10.26611/1015914
- Views 154
- Downloads 0
Comparative evaluation of the effect of intrathecal ketamine and fentanyl added to bupivacaine in elective hernia repair surgeries
Background: Addition of adjuvants in spinal anaesthesia spares the local anaesthetic dose and produces good postoperative analgesia. Aim: To compare the duration of prolongation of postoperative analgesia between Ketamin...
Prediction of paediatric micro-cuff endotracheal tube size by ultrasonography and its comparison to standard age-based formula
Background and Aims: Over the years conventional formulas based on age, height or weight is being used for endotracheal tube (ETT) selection in paediatrics. Ultrasound is gaining popularity as an easy, simple and non-inv...
Hemodynamic variables and side effects of 0.75% preservative free Ropivacaine for lower abdominal surgeries
Bupivacaine has been shown to have selective cardiac effects related to the slow rate at which it dissociates from the sodium channel.4, 13 An important aspects of this toxicity is that it involves a significant degree o...
A comparative study of spinal anaesthesia with 0.5% bupivacaine and 0.75% ropivacaine for percutaneous nephrolithotomy surgeries
This prospective comparative study was conducted to study and compare the intraoperative anaesthesia and postoperative analgesia between 0.5% Bupivacaine and 0.75% Ropivacainefor spinal anaesthesia for percutaneous Nephr...
Comparison of anaesthetic efficacy of nalbuphine and dexmedetomidine as an adjuvant to ropivacaine and lignocaine in supraclavicular block for upper limb surgeries
Background: Brachial plexus block provides an useful alternative to general anaesthesia for upper limb surgeries. The block characteristics of dexmedetomidine and nalbuphine as adjuvants to ropivacaine, a newly emerging...