Lidocaine 5% / Phenylephrine 0.5% nasal spray

ObjectiveTo assess the effect of low-dose perioperatively continuous infusion of lidocaine on postoperative inflammation, immune function and quality of recovery in patients undergoing video-assisted thoracoscopic surgery (VATS).MethodsPatients with lung cancer aged 18-65 years, undergoing elective VATS were randomized into lidocaine intervention (L) and standard care (C) groups. For patients in Group L, 1 mg/kg lidocaine was intravenously injected within approximately 10 min during the induction of anesthesia, followed by a continuous infusion of lidocaine at a rate of 1.5 mg/kg/h until the patient left the operating room. The postoperative analgesia plan included 2% lidocaine at 5 mg/kg. Group C was given an equal volume of normal saline as a control.The primary outcomes were plasma concentrations of tumor necrosis factor-α (TNF-α), interleukin-1(IL-1), and interleukin-6 (IL-6), along with T lymphocyte counts of CD3+, CD4+, CD8+, and the CD4+/CD8+ ratio before anesthesia induction (T1), and 24 h (T2) and 48 h (T3) postoperatively. Secondary outcomes included the visual analog scale (VAS) for pain at rest and during movement, Time to first post-operative rescue analgesia, Cumulative OME(the oral morphine equivalents) at 24 h, along with the frequency and severity of postoperative nausea and vomiting (PONV) within the initial 48-h after surgery.ResultsIn Group C and Group L, compared with preoperative levels, the levels of CD3 + , CD4 + and the ratio of CD4 + /CD8 + were significantly decreased at 24 and 48 h postoperatively, while the levels of TNF-α, IL-1 and IL-6 were significantly increased (P ConclusionIntravenous infusion of lidocaine during the perioperative period was effective in reducing postoperative inflammatory response and the postoperative suppression of cellular immune function in the body, as well as significantly reducing the level of postoperative pain and the incidence of PONV in patients undergoing VATS.

Abstract licence: CC BY-NC-ND

The purpose of this research is to assess and compare the efficacy of an intracameral mydriatic solution with conventional topical agents in the completion of manual small incision cataract surgery (MSICS) in a black population. This randomised controlled trial was conducted among 102 patients undergoing MSICS under sub-tenon’s block. Mydriasis in the topical group was achieved with a pre-operative topical dilating combination of tropicamide 0.8% and phenylephrine 5% while surgery was commenced in patients in the intracameral group without dilation, and mydriasis was achieved intraoperatively with an intracameral solution of lidocaine 0.5% and adrenaline 0.001%. Pupil sizes were measured serially, before, and at four different junctures during surgery. The proportion of patients needing supplementary mydriasis in either group was noted, as well as post-operative pinhole visual acuity (VA). Data analysis was carried out using the Statistical Package for the Social Sciences Statistical Product and Service Solutions(SPSS) version 25.0 (IBM, Chicago, Illinois). The level of statistical significance was set at P < 0.05 at a 95% confidence interval. Mean pupil diameter before dilating and blocking was 2.5 ± 0.6 mm in the topical group and 2.5 ± 0.7 mm in the intracameral group (P = 0.752). This increased to 7.7 ± 1.1 mm and 7.4 ± 0.8 mm, respectively (P = 0.134), after administering either mydriatic agents. After that, mean pupil diameter progressively reduced in both groups but was significantly higher in the intracameral group at each point of measurement (P < 0.05). Postoperatively, there was no significant difference in the VA between the two groups (P < 0.05). Using an intracameral mixture of lidocaine and adrenaline gives adequate mydriasis for the successful completion of MSICS without pre-operative dilation.

Abstract licence: CC BY-NC-SA