scholarly journals Effects of Ultrasound-Guided Paravertebral Block on MMP-9 and Postoperative Pain in Patients Undergoing VATS Lobectomy: A Randomized, Controlled Clinical Trial

2020 ◽  
Author(s):  
Haichen Chu ◽  
He Dong ◽  
Yongjie Wang ◽  
Zejun Niu

Abstract Background: Local anesthesia can reduce the response to surgical stress and decrease the consumption of opioids, which may reduce immunosuppression and potentially delay postoperative tumor recurrence. We compared paravertebral block(PVB) combined with general anesthesia(GA) and general anesthesia regarding their effects on matrix metalloproteinase-9 (MMP-9) and postoperative pain after video-assisted thoracoscopic surgery(VATS) lobectomy. Methods: 54 patients undergoing elective VATS lobectomy at a single tertiary care, teaching hospital located in Qingdao between May 2 2018 and Sep 28 2018 were randomised by computer to either paravertebral block combined with general anesthesia or general anesthesia. The primary outcome was pain scores during postoperative 48h. The secondary outcome were plasma concentrations of MMP-9, complications, and duration of postoperative hospital stay. Results: 75 were enrolled to the study, of whom 21 were excluded before surgery. We analyzed lobectomy patients undergoing paravertebral block combined with general anesthesia (n=25) or general anesthesia (n=24). Both groups were similar regarding baseline characteristics. Pain scores were lower at 4h and 24h in PVB/GA group, compared with GA group (2.53±0.83 vs 3.4±0.91; 2.2±0.94 vs 3.0±0.93, respectively, P <0.05). There were no difference at 1h and 48h between groups. Patients in the PVB/GA group showed a greater decrease in plasma MMP-9 level at T1 and T2 after VATS lobectomy ( P <0.05). Postoperative complications and length of stay did not differ by anesthetic technique. Conclusions: The paravertebral block/general anesthesia can provide statistically better pain relief and attenuate MMP-9 response to surgery and after VATS lobectomy. This technique may be beneficial for patients to recover rapidly after lung surgery and reduce postoperative tumor recurrence.

2019 ◽  
Author(s):  
Haichen Chu ◽  
He Dong ◽  
Yongjie Wang ◽  
Zejun Niu

Abstract Background: Local anesthesia can reduce the response to surgical stress and decrease the consumption of opioids, which may reduce immunosuppression and potentially delay postoperative tumor recurrence. We compared paravertebral block(PVB) combined with general anesthesia(GA) and general anesthesia regarding their effects on matrix metalloproteinase-9 (MMP-9) and postoperative pain after video-assisted thoracoscopic surgery(VATS) lobectomy.Methods: 54 patients undergoing elective VATS lobectomy at a single tertiary care, teaching hospital located in Qingdao between May 2 2018 and Sep 28 2018 were randomised by computer to either paravertebral block combined with general anesthesia or general anesthesia. The primary outcome was pain scores during postoperative 48h. The secondary outcome were plasma concentrations of MMP-9, complications, and duration of postoperative hospital stay. Results: 75 were enrolled to the study, of whom 21 were excluded before surgery. We analyzed lobectomy patients undergoing paravertebral block combined with general anesthesia (n=25) or general anesthesia (n=24). Both groups were similar regarding baseline characteristics. Pain scores were lower at 4h and 24h in PVB/GA group, compared with GA group (2.53±0.83 vs 3.4±0.91; 2.2±0.94 vs 3.0±0.93, respectively, P<0.05). There were no difference at 1h and 48h between groups. Patients in the PVB/GA group showed a greater decrease in plasma MMP-9 level at T1 and T2 after VATS lobectomy (P<0.05). Postoperative complications and length of stay did not differ by anesthetic technique.Conclusions: The paravertebral block/general anesthesia can provide statistically better pain relief and attenuate MMP-9 response to surgery and after VATS lobectomy. This technique may be beneficial for patients to recover rapidly after lung surgery and reduce postoperative tumor recurrence.


2020 ◽  
Author(s):  
Haichen Chu ◽  
He Dong ◽  
Yongjie Wang ◽  
Zejun Niu

Abstract Background: Local anesthesia can reduce the response to surgical stress and decrease the consumption of opioids, which may reduce immunosuppression and potentially delay postoperative tumor recurrence. We compared paravertebral block(PVB) combined with general anesthesia(GA) and general anesthesia regarding their effects on matrix metalloproteinase-9 (MMP-9) and postoperative pain after video-assisted thoracoscopic surgery(VATS) lobectomy. Methods: 54 patients undergoing elective VATS lobectomy at a single tertiary care, teaching hospital located in Qingdao between May 2 2018 and Sep 28 2018 were randomised by computer to either paravertebral block combined with general anesthesia or general anesthesia. The primary outcome was pain scores during postoperative 48h. The secondary outcome were plasma concentrations of MMP-9, complications, and duration of postoperative hospital stay. Results: 75 were enrolled to the study, of whom 21 were excluded before surgery. We analyzed lobectomy patients undergoing paravertebral block combined with general anesthesia (n=25) or general anesthesia (n=24). Both groups were similar regarding baseline characteristics. Pain scores were lower at 4h and 24h in PVB/GA group, compared with GA group (2.53±0.83 vs 3.4±0.91; 2.2±0.94 vs 3.0±0.93, respectively, P <0.05). There were no difference at 1h and 48h between groups. Patients in the PVB/GA group showed a greater decrease in plasma MMP-9 level at T1 and T2 after VATS lobectomy ( P <0.05). Postoperative complications and length of stay did not differ by anesthetic technique. Conclusions: The paravertebral block/general anesthesia can provide statistically better pain relief and attenuate MMP-9 response to surgery and after VATS lobectomy. This technique may be beneficial for patients to recover rapidly after lung surgery and reduce postoperative tumor recurrence.


BMJ Open ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. e044168
Author(s):  
Prahlad Adhikari ◽  
Asish Subedi ◽  
Birendra Prasad Sah ◽  
Krishna Pokharel

ObjectivesThis study aimed to determine if low dose intravenous ketamine is effective in reducing opioid use and pain after non-elective caesarean delivery.DesignProspective, randomised, double-blind.SettingTertiary hospital, Bisheshwar Prasad Koirala Institute of Health Sciences, Dharan, NepalParticipants80 patients undergoing non-elective caesarean section with spinal anaesthesia.InterventionsPatients were allocated in 1:1 ratio to receive either intravenous ketamine 0.25 mg/kg or normal saline before the skin incision.Primary and secondary outcome measuresThe primary outcome was the total amount of morphine equivalents needed up to postoperative 24 hours. Secondary outcome measures were postoperative pain scores, time to the first perception of pain, maternal adverse effects (nausea, vomiting, hypotension, shivering, diplopia, nystagmus, hallucination) and neonatal Apgar score at 1 and 5 min, neonatal respiratory depression and neonatal intensive-care referral.ResultsThe median (range) cumulative morphine consumption during the first 24 hours of surgery was 0 (0–4.67) mg in ketamine group and 1 (0–6) mg in saline group (p=0.003). The median (range) time to the first perception of pain was 6 (1–12) hours and 2 (0.5–6) hours in ketamine and saline group, respectively (p<0.001). A significant reduction in postoperative pain scores was observed only at 2 hours and 6 hours in the ketamine group compared with placebo group (p<0.05). Maternal adverse effects and neonatal outcomes were comparable between the two groups.ConclusionsIntravenous administration of low dose ketamine before surgical incision significantly reduced the opioid requirement in the first 24 hours in patients undergoing non-elective caesarean delivery.Trial registration numberNCT03450499.


2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Kamen Vlassakov ◽  
Avery Vafai ◽  
David Ende ◽  
Megan E. Patton ◽  
Sonia Kapoor ◽  
...  

Abstract Background Thoracic paravertebral blockade is an accepted anesthetic and analgesic technique for breast surgery. However, real-time ultrasound visualization of landmarks in the paravertebral space remains challenging. We aimed to compare ultrasound-image quality, performance times, and clinical outcomes between the traditional parasagittal ultrasound-guided paravertebral block and a modified approach, the ultrasound-guided proximal intercostal block. Methods Women with breast cancer undergoing mastectomy (n = 20) were randomized to receive either paravertebral (n = 26) or proximal intercostal blocks (n = 32) under ultrasound-guidance with 2.5 mg/kg ropivacaine prior to surgery. Block ultrasound images before and after needle placement, and anesthetic injection videoclips were saved, and these images and vidoes independently rated by separate novice and expert reviewers for quality of visualization of bony elements, pleura, relevant ligament/membrane, needle, and injectate spread. Block performance times, postoperative pain scores, and opioid consumption were also recorded. Results Composite visualization scores were superior for proximal intercostal compared to paravertebral nerve block, as rated by both expert (p = 0.008) and novice (p = 0.01) reviewers. Notably, both expert and novice rated pleural visualization superior for proximal intercostal nerve block, and expert additionally rated bony landmark and injectate spread visualization as superior for proximal intercostal block. Block performance times, needle depth, opioid consumption and postoperative pain scores were similar between groups. Conclusions Proximal intercostal block yielded superior visualization of key anatomical landmarks, possibly offering technical advantages over traditional paravertebral nerve block. Trial registration ClinicalTrials.gov, NCT02911168. Registred on the 22nd of September 2016.


2017 ◽  
Vol 09 (02) ◽  
pp. 080-083 ◽  
Author(s):  
Asif Ilyas ◽  
Joseph Labrum

Purpose Currently no guidelines exist for the timing of the injection of anesthetics in surgeries performed under general anesthesia to minimize postoperative pain. To better understand the role of timing of the injection of local anesthesia in hand surgery performed under general anesthesia, we evaluated the effect of pre- versus postincisional local analgesic injection on immediate postoperative pain experience. We hypothesize that the preincisional (preemptive) injection will result in decreased immediate postoperative pain experience and analgesic use when compared with postincisional injection. Methods Consecutive cases of thumb basal joint arthroplasty performed over a 4-year period were retrospectively reviewed. During the first half of the study period, the surgical site was infiltrated with 0.5% bupivacaine at the completion of surgery following closure. During the second half of the study period, the surgical site was infiltrated with 0.5% bupivacaine prior to skin incision. Data collected included patient demographics, immediate postoperative recovery room (PACU) pain scores, and postoperative opioid consumption in morphine equivalents. Results Two-tailed t-test identified no significant difference between the pre- and postincision cohorts relative to PACU entrance pain scores and time spent in the PACU. PACU exit pain scores were significantly lower in the preincision cohort. The mean PACU pain score was also significantly lower in the preincision cohort. PACU opioid consumption, converted into morphine equivalents, was found to be 211 mg in the preincision versus 299 mg in the postincision cohort. Conclusion The preincisional (preemptive) injection of local anesthesia was found to result in lower pain scores during and upon exit of the PACU as compared with the postclosure group. In addition, the preincision cohort also trended toward lower opioid consumption while in the PACU. Consideration should be given to the routine use of preincision injection of local anesthesia to maximize pain relief in a multimodal pain strategy in hand surgical patients. Level of Evidence Therapeutic level III.


2021 ◽  
Vol 260 (S1) ◽  
pp. S53-S58
Author(s):  
Francesco Santoro ◽  
Pasquale Debidda ◽  
Paolo Franci

Abstract OBJECTIVE To test clinical and analgesic effects of a single-injection caudal thoracic paravertebral block (TPVB) after localization of the thoracic paravertebral space with a loss-of-resistance to air injection technique in female dogs undergoing unilateral radical mastectomy. ANIMALS 14 client-owned dogs. PROCEDURES Dogs were premedicated with methadone, anesthetized with propofol and sevoflurane, and randomly assigned to receive a TPVB or no block preoperatively. Rescue analgesia with fentanyl and methadone was provided on the basis of cardiovascular responses during surgery and postoperative pain scores assigned with a validated pain scale. Required dose of rescue opioids; mean end-tidal sevoflurane concentration; episodes of hypotension, bradycardia, and other complications; quality of recovery scores; and postoperative pain scores were compared between groups. RESULTS Median intraoperative fentanyl doses were 0 µg/kg (range, 0 to 2 µg/kg) and 4 µg/kg (range, 2 to 6 µg/kg) for the TPVB and control groups, respectively. Median postoperative methadone doses were 0 mg/kg (range, 0 to 0.2 mg/kg) and 0.6 mg/kg (range, 0.4 to 0.6 mg/kg) for the TPVB and control groups, respectively. Recovery scores and pain scores assigned at the time of and 1 hour after extubation were significantly lower in the TPVB group than in the control group. CONCLUSIONS AND CLINICAL RELEVANCE A single-injection caudal TPVB improved pain control and recovery quality in female dogs undergoing unilateral radical mastectomy. Because the TPVB involves only a single injection, does not take long to perform, and requires only readily available low-cost equipment, the technique may be a valuable option in both referral and first-opinion practice.


2021 ◽  
Vol 9 (7_suppl3) ◽  
pp. 2325967121S0003
Author(s):  
Elizabeth H. G. Turner ◽  
Christopher J. Whalen ◽  
Matthew A. Beilfuss ◽  
Scott J. Hetzel ◽  
Kristopher M. Schroeder ◽  
...  

Background: Hip arthroscopy is most commonly performed utilizing general anesthesia. Studies in hip and knee arthroplasty have shown an association between neuraxial anesthesia and lower rates of perioperative adverse events, lower post-operative pain scores, and lower dosing of postoperative systemic analgesics when compared to general anesthesia. A direct comparison between neuraxial and general anesthesia in hip arthroscopy has not previously been investigated. Hypothesis/Purpose: We sought to identify the immediate post-operative differences in opioid use, pain scores, and post-anesthesia care unit (PACU) length of stay (LOS) after hip arthroscopy related to the type of anesthesia used for the surgical procedure. Methods: Patients undergoing hip arthroscopy for femoroacetabular impingement syndrome (FAIS) with labral tears by a single surgeon at an academic center between October 2017 and July 2019 were retrospectively reviewed. The primary outcome was PACU opioid administration, measured by morphine equivalents (MEQ). Secondary parameters included total LOS, post-incision LOS, PACU LOS and PACU arrival/discharge pain scores. Analyses conducted were t-tests, Wilcoxon rank sum tests, or chi-square tests. Results: A total of 129 patients met inclusion criteria for this study; 54 males and 75 females, with an average age of 28 (±10.1) years. 52 (40.3%) had general anesthesia and 77 (59.7%) had neuraxial anesthesia, including spinal, epidural, and combined spinal-epidural anesthesia which were intermixed throughout the study period. Intraoperative and PACU opioid administration demonstrated a significant difference in medians. Neuraxial methods required a lower MEQ in both the operating room (30.0 vs 53.9, p = 0.001) and PACU (18.2 vs 31.2, p = 0.002). Neuraxial anesthesia had lower median PACU arrival and discharge pain scores (0.0 vs. 5.0, p = 0.001, 3.0 vs. 4.0, p = 0.013). There was no statistically significant difference in post-incision LOS, or traction time. General anesthesia was associated with a longer PACU phase 1 time (1.0 vs. 1.3 hrs, p = 0.005). No major adverse events such as death, disability, or prolonged hospitalization occurred in either group. Conclusion: Neuraxial anesthesia use in routine hip arthroscopy was associated with lower immediate postoperative pain scores, lower intraoperative and immediate postoperative opioid requirements, and may be associated with shorter anesthesia recovery time without any major adverse events when compared to general anesthesia. Tables [Table: see text][Table: see text]


2021 ◽  
pp. E501-E510

BACKGROUND: Although being controversial, pregabalin (PGB) is proposed during a short perioperative period to improve pain relief.Comparisons between chronic and short-term users during lumbar spine surgery are lacking. OBJECTIVES: The purpose was to compare opioid requirements and postoperative pain among PGB chronic users and naive patients receiving a 48-hour perioperative administration. STUDY DESIGN: Prospective nonrandomized study. SETTING: Tertiary care hospital. METHODS: Chronic users (group PGB, n = 39) continued their treatment, naive patients (group C, n = 43) received a dose of 150 mg preoperatively and 75 mg/12 hours for 48 hours. Anesthesia and analgesia were standardized. The primary outcome was the cumulative oxycodone consumption at 24 hours, other outcomes included pain scores, DN4 (Douleur Neuropathique 4 Questions) scores, and side effects. RESULTS: Group PGB consumed less oxycodone at 24 hours (median [interquartile range] 10 mg [10–17.5] vs. 20 mg [10–20], P = 0.013], at 48 hours (15 mg [10–20] vs. 20 mg [12.5–30], P = 0.018), and required less intraoperative remifentanil (P = 0.004). Both groups showed similar pain scores during the 48-hour follow-up and at 3 months.Based on multivariate analysis, chronic users of PGB before surgery exhibited lower oxycodone requirements at 24 hours (odds ratio, 3.98; 95% confidence interval, 1.44–7.74; P = 0.008]. No differences were noted regarding side effects and DN4 scores. LIMITATIONS: Nonrandomized study. CONCLUSIONS: Patients chronically treated with PGB required less opioid when compared with a short perioperative administration before spinal surgery. Further prospective studies are required to confirm these results in spinal surgeries. KEY WORDS: Spinal surgery, pregabalin, postoperative pain, neuropathic pain


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