Intravenous lidocaine to prevent endothelial dysfunction after major abdominal surgery: A randomized controlled pilot trial
Background. Major abdominal surgery is associated with endothelial glycocalyx disruption. The anti-inflammatory effects of lidocaine were recently associated with endothelial barrier protection.
Methods. This was a single-centre, parallel group, randomized, controlled, double blind, pilot trial. Forty adult patients scheduled for major abdominal surgery were included between December 2016 and March 2017 in the setting of a University Hospital in Brussels (Belgium); reasons for non-inclusion were planned liver resection and conditions associated to increased risk of local anesthetics systemic toxicity. Patients were randomized to receive either lidocaine by continuous intravenous administration or an equivalent volume of 0.9% saline.
The primary endpoint was the postoperative syndecan-1 concentration (difference between groups). Near-infrared spectroscopy of the thenar eminence in association with the vascular occlusion test, and contemporary analysis of flow-mediated dilation of the brachial artery were the secondary outcomes, along with haemodynamic data. Blood samples and data were collected before surgery (T0), and at 1–3 h (T1) and 24 h (T2) post-surgery.
Results. Syndecan-1 concentration increased significantly post-surgery (P<0.001), but without any difference between groups. The near-infrared spectroscopy-derived and flow-mediated dilation-derived variables showed minor changes unrelated to group assignment. Compared with the placebo group, the intervention group had a significantly lower peri-operative mean arterial pressure and cardiac index, despite equally conducted goal-directed haemodynamic management. Postoperative lactate concentrations were similar between groups.
Conclusions. Lidocaine failed to have any effect on endothelial function. Since in comparisons to other types of clinical situations, syndecan-1 was only slightly upregulated, endothelial dysfunction after major abdominal surgery might be overestimated.
Figure 1
Figure 2
Due to technical limitations, tables are only available as a download in the supplemental files section.
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Posted 17 Jun, 2020
On 03 Jun, 2020
Received 27 May, 2020
On 27 May, 2020
On 27 May, 2020
Received 27 May, 2020
On 26 May, 2020
Invitations sent on 26 May, 2020
On 25 May, 2020
On 25 May, 2020
Received 02 May, 2020
On 02 May, 2020
On 26 Apr, 2020
Received 22 Apr, 2020
Invitations sent on 06 Apr, 2020
On 06 Apr, 2020
On 31 Mar, 2020
On 30 Mar, 2020
On 30 Mar, 2020
Intravenous lidocaine to prevent endothelial dysfunction after major abdominal surgery: A randomized controlled pilot trial
Posted 17 Jun, 2020
On 03 Jun, 2020
Received 27 May, 2020
On 27 May, 2020
On 27 May, 2020
Received 27 May, 2020
On 26 May, 2020
Invitations sent on 26 May, 2020
On 25 May, 2020
On 25 May, 2020
Received 02 May, 2020
On 02 May, 2020
On 26 Apr, 2020
Received 22 Apr, 2020
Invitations sent on 06 Apr, 2020
On 06 Apr, 2020
On 31 Mar, 2020
On 30 Mar, 2020
On 30 Mar, 2020
Background. Major abdominal surgery is associated with endothelial glycocalyx disruption. The anti-inflammatory effects of lidocaine were recently associated with endothelial barrier protection.
Methods. This was a single-centre, parallel group, randomized, controlled, double blind, pilot trial. Forty adult patients scheduled for major abdominal surgery were included between December 2016 and March 2017 in the setting of a University Hospital in Brussels (Belgium); reasons for non-inclusion were planned liver resection and conditions associated to increased risk of local anesthetics systemic toxicity. Patients were randomized to receive either lidocaine by continuous intravenous administration or an equivalent volume of 0.9% saline.
The primary endpoint was the postoperative syndecan-1 concentration (difference between groups). Near-infrared spectroscopy of the thenar eminence in association with the vascular occlusion test, and contemporary analysis of flow-mediated dilation of the brachial artery were the secondary outcomes, along with haemodynamic data. Blood samples and data were collected before surgery (T0), and at 1–3 h (T1) and 24 h (T2) post-surgery.
Results. Syndecan-1 concentration increased significantly post-surgery (P<0.001), but without any difference between groups. The near-infrared spectroscopy-derived and flow-mediated dilation-derived variables showed minor changes unrelated to group assignment. Compared with the placebo group, the intervention group had a significantly lower peri-operative mean arterial pressure and cardiac index, despite equally conducted goal-directed haemodynamic management. Postoperative lactate concentrations were similar between groups.
Conclusions. Lidocaine failed to have any effect on endothelial function. Since in comparisons to other types of clinical situations, syndecan-1 was only slightly upregulated, endothelial dysfunction after major abdominal surgery might be overestimated.
Figure 1
Figure 2
Due to technical limitations, tables are only available as a download in the supplemental files section.