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Abstract Background Conflicting data exist regarding the effects of deep neuromuscular blockade (NMB) on abdominal dimensions during laparoscopic procedures. We performed a clinical study to establish the influence of moderate and deep neuromuscular blockade (NMB) on the abdominal working space, measured by Magnetic Resonance Imaging (MRI), during laparoscopic donor nephrectomy with standard pressure (12 mmHg) pneumoperitoneum under sevoflurane anaesthesia. Methods Ten patients were intraoperatively scanned three times in the lateral decubitus position, with pneumoperitoneum maintained by a mobile insufflator. The first scan without NMB (T1) was followed by scans with moderate (T2) and deep NMB (T3). The skin-sacral promontory (S-SP) distance was measured, and 3D pneumoperitoneum volumes were reconstructed. Results The mean difference in the S-SP distance was -0.32 cm between T2 and T3 (95% CI -1.06 - 0.42 cm; p = 0.344) and + 2.1 cm between T1 and T2 (95% CI 0.81 - 3.39 cm; p = 0.006). The mean differences in pneumoperitoneum volume were 166 mL between T2 and T3 (95% CI, 5 - 327 mL; p = 0.044) and 108 mL between T1 and T2 (95% CI, -273 - 488 mL; p = 0.525). The pneumoperitoneum volume showed high inter-individual variability and no increase in three patients with a high volume at T1. Conclusions During laparoscopic surgery in the lateral decubitus position with standard pressure under sevoflurane anaesthesia, deep NMB did not increase the S-SP distance compared to moderate NMB. Moderate NMB increased the S-SP distance by a mean of 2.1 cm (15.2%) compared with no NMB. The mean pneumoperitoneum volume increased slightly from moderate to deep NMB, with high inter-individual variability. Trial registration Clinicaltrials.gov ID: NCT03287388.

BackgroundFew studies have examined the effect of epidural block on surgical conditions during pediatric subumbilical laparoscopic surgery involving a supraglottic airway (SGA). This study investigated the surgical condition scores for such procedures in cases where neuromuscular block, epidural block, or neither was used.MethodsA total of 150 patients aged 3–12 years undergoing laparoscopic orchiopexy with a ProSeal SGA device were randomly allocated to one of three groups: the control group (did not receive neuromuscular block and epidural block), the NMB group [received a neuromuscular block (train-of-four 1–2 twitches) using rocuronium], or the EDB group (received an epidural block using ropivacaine). The primary outcome was the quality of surgical conditions evaluated with the Leiden-Surgical Rating Scale by the blinded surgeon. The secondary outcome measures included intraoperative hemodynamic data (including mean arterial pressure and heart rate), the SGA device removal time, the PACU discharge time, the pain score in the PACU and intraoperative adverse events (including bradycardia, hypotension, peak airway pressure > 20 cmH2O, and poor or extremely poor surgical conditions occurred during the operation). Statistical analysis was performed with one-way analysis of variance, the Kruskal–Wallis test, the chi-square test or Fisher’s exact test. Bonferroni corrections for multiple comparisons were made for primary and secondary outcomes.ResultsSurgical condition scores were significantly higher in the NMB and EDB groups than in the control group (median difference: 0.8; 95% confidence interval [CI], 0.5–1.0; p

Background: Conflicting data exist regarding the effects of deep neuromuscular blockade (NMB) on abdominal dimensions during laparoscopic procedures. We performed a clinical study to establish the influence of moderate and deep neuromuscular blockade (NMB) on the abdominal working space, measured by Magnetic Resonance Imaging (MRI), during laparoscopic donor nephrectomy with standard pressure (12 mmHg) pneumoperitoneum under sevoflurane anaesthesia. Methods: Ten patients were intraoperatively scanned three times in the lateral decubitus position, with pneumoperitoneum maintained by a mobile insufflator. The first scan without NMB (T1) was followed by scans with moderate (T2) and deep NMB (T3). The skin-sacral promontory (S-SP) distance was measured, and 3D pneumoperitoneum volumes were reconstructed. Results: The mean difference in the S-SP distance was -0.32 cm between T2 and T3 (95% CI -1.06 - 0.42 cm; p = 0.344) and + 2.1 cm between T1 and T2 (95% CI 0.81 - 3.39 cm; p = 0.006). The mean differences in pneumoperitoneum volume were 166 mL between T2 and T3 (95% CI, 5 - 327 mL; p = 0.044) and 108 mL between T1 and T2 (95% CI, -273 - 488 mL; p = 0.525). The pneumoperitoneum volume showed high inter-individual variability and no increase in three patients with a high volume at T1. Conclusions: During laparoscopic surgery in the lateral decubitus position with standard pressure under sevoflurane anaesthesia, deep NMB did not increase the S-SP distance compared to moderate NMB. Moderate NMB increased the S-SP distance by a mean of 2.1 cm (15.2%) compared with no NMB. The mean pneumoperitoneum volume increased slightly from moderate to deep NMB, with high inter-individual variability. Trial registration: Clinicaltrials.gov ID: NCT03287388. [ABSTRACT FROM AUTHOR]

Abstract Background Globally, 10% of neonatal mortality in low-/middle-income countries (L/MIC) is directly attributed to surgical conditions, and appropriate referral and transport of newborns to tertiary-level hospitals for surgical care often underlie their survival. This study aimed at evaluating the outcomes of newborns with surgical conditions in a low-resource setting, in the context of a structured standard operating procedure (SOP) for newborn transport. Methods A cluster randomized controlled trial was conducted. Ten county hospitals that refer newborns with surgical conditions to the Moi Teaching and Referral Hospital (MTRH) were selected and randomized into intervention group (A) and control group (B). A structured standard operating procedure (SOP) for transport of newborns was introduced in the hospitals in group A via an education module. Thereafter, 126 newborns (63 in group A and 63 in group B) were enrolled, upon their admission to the MTRH. All the newborns from both groups of referring hospitals were given standard surgical care upon admission. Data on study variables was collected and analyzed, and the outcomes of the newborns in the two groups were compared to assess the effect of the structured SOP. Results The median age at admission was 4.1 days in group A and 4.6 days in group B. The top 4 surgical conditions were gastroschisis, hydrocephalus, Hirschsprung’s disease, and anorectal malformations. There was a statistically significant difference (p

The Surgeons OverSeas Assessment of Surgical Needs (SOSAS) survey tool is used to determine the unmet surgical needs in the community and has been validated in several countries. A major weakness is the absence of an objective assessment to verify patient-reported surgically treatable conditions. The goal of this study was to determine whether a picture portfolio, a tool previously shown to improve parental recognition of their child's congenital deformity, could improve the accuracy of the SOSAS tool by how it compares with physical examination. This study focused on children as many surgical conditions in them require prompt treatment but are often not promptly diagnosed. We conducted a descriptive cross-sectional community-based study to determine the prevalence of congenital and acquired surgical conditions among children and adults in a mixed rural-urban area of Lagos, Southwest Nigeria. The picture portfolio was administered only to children and the surgical conditions to be assessed were predetermined using an e-Delphi process among pediatric surgeons. The modified The Surgeons OverSeas Assessment of Surgical Needs–Nigeria Survey Tool (SOSAS-NST) was administered to household members to collect other relevant data. Data were analyzed using the REDCap analytic tool. Eight hundred and fifty-six households were surveyed. There were 1984 adults (49.5%) and 2027 children (50.5%). Thirty-six children met the predetermined criteria for the picture portfolio–hydrocephalus (n = 1); lymphatic malformation (n = 1); umbilical hernia (n = 14); Hydrocele (n = 5); inguinal hernia (n = 10) and undescended testes (n = 5). The picture portfolio predicted all correctly except a case of undescended testis that was mistaken for a hernia. The sensitivity of the picture portfolio was therefore 35/36 or 97.2%. The SOSAS-NST has improved on the original SOSAS tool and within the limits of the small numbers, the picture portfolio has a high accuracy in predicting diagnosis in children in lieu of physical examination. [ABSTRACT FROM AUTHOR]

Evaluate the impact of deep neuromuscular blockade on intraoperative nociception Deep neuromuscular blockade has been shown to improve surgical conditions and postoperative outcomes compared to moderate neuromuscular blockade in laparoscopic surgery. Still, its impact on intraoperative nociception and opioid requirement has never been assessed. Monocentric randomised controlled trial. Operating room. We included 100 ASA I to III patients who underwent colorectal laparoscopic surgery with desflurane-remifentanil anesthesia. Patients were randomised into two groups to achieve either moderate (1–3 train of four response) or deep (1–2 post-tetanic count) neuromuscular block (NMB) with repeated boluses of rocuronium. The Nociception Level (NOL) index guided intraoperative remifentanil administration in both groups. The primary endpoint was total intraoperative remifentanil administration per hour of surgery. Secondary endpoints included, Leiden Surgical Rating Scale (L-SRS), intra-abdominal pressure, postoperative pain scores and opioids' consumption. Ninety-three patients were analysed. Forty-five in the deep group and 48 patients in moderate group. Intraoperative administration of remifentanil was 348 (228–472) μg.h−1 in the deep NMB group compared to 494 (392–618) μg.h−1 in the moderate NMB group (P < 0.001). Lowest L-SRS was 5 (4–5) in the deep NMB group versus 3 (2–5) (P < 0.001) in the moderate NMB group. Mean intra-abdominal pressure was 11.9 (1.3) in the deep NMB group versus 13 (1.3) (P < 0.001) in the moderate NMB group. Secondary postoperative outcomes including pain scores and analgesics administration were not significantly different. This study shows that deep neuromuscular blockade reduces intraoperative NOL-guided administration of remifentanil in colorectal laparoscopic surgeries. It also improves surgical conditions. The study was registered at ClinicalTrials.gov under NCT03910998. • Deep neuromuscular block NMB reduces NOL-guided remifentanil administration by 30 % during laparoscopic colorectal surgery. • Deep neuromuscular block improves surgical satisfaction and reduces intra-abdominal pressure during laparoscopic surgery. • Postoperative outcomes including postoperative pain scores and opioids' consumption were similar between groups. [ABSTRACT FROM AUTHOR]

Background: Globally, 10% of neonatal mortality in low-/middle-income countries (L/MIC) is directly attributed to surgical conditions, and appropriate referral and transport of newborns to tertiary-level hospitals for surgical care often underlie their survival. This study aimed at evaluating the outcomes of newborns with surgical conditions in a low-resource setting, in the context of a structured standard operating procedure (SOP) for newborn transport. Methods: A cluster randomized controlled trial was conducted. Ten county hospitals that refer newborns with surgical conditions to the Moi Teaching and Referral Hospital (MTRH) were selected and randomized into intervention group (A) and control group (B). A structured standard operating procedure (SOP) for transport of newborns was introduced in the hospitals in group A via an education module. Thereafter, 126 newborns (63 in group A and 63 in group B) were enrolled, upon their admission to the MTRH. All the newborns from both groups of referring hospitals were given standard surgical care upon admission. Data on study variables was collected and analyzed, and the outcomes of the newborns in the two groups were compared to assess the effect of the structured SOP. Results: The median age at admission was 4.1 days in group A and 4.6 days in group B. The top 4 surgical conditions were gastroschisis, hydrocephalus, Hirschsprung's disease, and anorectal malformations. There was a statistically significant difference (p <.05) in all parameters that measured the clinical status of the newborns at admission, in the two groups. Mortality rate was 3.2% in group A and 28.6% in group B (p <.001), and hospital stay was 11 days in group A and 18 days in group B. Conclusion: Appropriate transport of newborns with surgical conditions significantly improved their outcomes at the MTRH. Level of evidence: II [ABSTRACT FROM AUTHOR]

Purpose: Unlike other laparoscopic techniques, the peritoneum is not incised in laparoscopic totally extraperitoneal inguinal hernia repair (TEP), and the preperitoneal space is developed as the surgical field by blunt dissection and CO2 insufflation. While many studies have investigated the effect of neuromuscular blockade (NMB) on the surgical conditions and postoperative pain of laparoscopic intraperitoneal surgery, few studies have investigated those of TEP. In the present study, we investigated the effect of NMB on the surgical conditions and postoperative pain of TEP. Methods: Forty-two adult patients scheduled for unilateral TEP under general anesthesia with remifentanil and desflurane were randomly assigned to paralyzed or non-paralyzed groups. In the paralyzed group, rocuronium doses were administered to maintain post-tetanic count at ≤ 5 during surgery. Non-paralyzed subjects were not given any rocuronium. Postoperatively, surgeon-evaluated surgical conditions, assessed using a 100-mm visual analogue scale ranging from 0 mm (not acceptable) to 100 mm (excellent), were compared between the two groups. For evaluation of postoperative pain, the time from the end of anesthesia to the initial requirement of postoperative analgesia was compared by the log-rank test. Results: Median [interquartile range] score of surgical condition in the paralyzed and non-paralyzed groups were 84 [75–90] and 84 [78–87], respectively (P = 0.46). Significant differences in postoperative analgesic requirements between the two groups were not confirmed (P = 0.74). Conclusion: NMB did not improve the surgical conditions nor reduce postoperative pain. NMB is not routinely needed for TEP just because it is a laparoscopic procedure. Clinical trial registration: The trial was registered in the UMIN clinical trials registry (UMIN000029683, October 24, 2017; Principal investigator: Masafumi Fujimoto, https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr%5fview.cgi?recptno=R000033920) prior to patient enrolment. [ABSTRACT FROM AUTHOR]

Abstract Background and aims Deep neuromuscular blockade (NMB) is known to improve surgical conditions, compared to moderate neuromuscular blockade (NMB), which is expected to improve postoperative quality of recovery (QOR). However, it is unknown whether deep NMB improves postoperative QOR in ambulatory gynecologic laparoscopy. Therefore, we compared the effects of deep and moderate NMB on postoperative QOR in ambulatory gynecologic laparoscopy. Methodology We included 80 female in this study. They were randomized into 2 equal groups: deep NMB (dNMB) and moderate NMB (mNMB) at constant pneumoperitoneum pressure of 12 mmHg. The primary outcome was QOR-40 at 24 h, and the secondary outcomes were duration of surgery, surgical rating scale (SRS) score, time to home discharge readiness, pain scores, and tramadol consumption. Results The SRS scores were significantly higher in dNMB group, compared with mNMB. Mean (95% CI) SRS scores in deep NMB were 4.55 (4.52-4.58) versus 4.15 (4.11-4.19) in moderate NMB, p = 0.03. However, there was no significant difference between the two groups in the QoR-40 scores, and other secondary outcomes. Conclusion We found no difference between deep and moderate NMB on postoperative QOR after ambulatory gynecologic laparoscopy. Therefore, deep NMB during ambulatory gynecologic laparoscopy may be unnecessary, at least in non-obese patients. Trial registration This study was registered at www.clinicaltrials.gov ( NCT04105764 ).

Background: Use of an LMA ProSeal™ laryngeal mask airway (P-LMA; Teleflex) with no neuromuscular block is considered a safe alternative to tracheal intubation in short-duration paediatric laparoscopic surgery. However, few studies have evaluated surgical conditions of short-duration paediatric laparoscopic surgery using this anaesthetic technique. We assessed surgical conditions for paediatric laparoscopic inguinal hernia repair using P-LMA with and without neuromuscular block.Methods: Sixty-six patients undergoing laparoscopic inguinal hernia repair were randomised to receive a neuromuscular block (train-of-four 1-2 twitches) using rocuronium or no neuromuscular block with the P-LMA. All operations were performed by the same surgeon who determined the surgical conditions using the Leiden-surgical rating scale (L-SRS). Secondary outcomes included perioperative data, haemodynamics, and adverse events.Results: Neuromuscular block improved surgical conditions compared with no neuromuscular block: mean (standard deviation) L-SRS 4.1 (0.5) vs 3.5 (0.6), respectively (P<0.0001). Mean rocuronium dose in the neuromuscular block group was 12.7 (4.4-29.7) mg or 0.7 (0.6-0.8) mg kg-1. The insufflation Ppeak was higher in the no neuromuscular block group than in the neuromuscular block group: mean (standard deviation) Ppeak 17.9 (1.8) cm H2O vs 16.2 (1.9) cm H2O, respectively (P=0.0004). Fifteen children (45.5%) in the no neuromuscular block group had adverse events during the surgery and anaesthesia vs four children (12.1%) in the neuromuscular block group (P=0.006).Conclusions: Neuromuscular block significantly improved surgical conditions and reduced the incidence of adverse events during surgery and anaesthesia when an LMA Proseal™ was used in short-duration paediatric laparoscopic surgery.Clinical Trial Registration: ChiCTR2000038529. [ABSTRACT FROM AUTHOR]

Surgical conditions affecting the abdomen in children can be associated with significant morbidity and mortality if they are not recognised and managed appropriately. It is therefore important that the correct diagnosis is made quickly, and the appropriate intervention is initiated in a timely manner and, if necessary, rapid transfer is made to a specialist paediatric surgical facility. This article provides an overview of the different surgical presentations encountered in children, and outlines the most important points in the history, examination and management of such cases, whether encountered in the emergency setting or in the community. Two illustrative case studies have been included to demonstrate how these emergencies may present in clinical practice. [ABSTRACT FROM AUTHOR]

Background: Deep neuromuscular block is associated with improved working conditions during laparoscopic surgery when propofol is used as a general anaesthetic. However, whether deep neuromuscular block yields similar beneficial effects when anaesthesia is maintained using volatile inhalation anaesthesia has not been systematically investigated. Volatile anaesthetics, as opposed to intravenous agents, potentiate muscle relaxation, which potentially reduces the need for deep neuromuscular block to obtain optimal surgical conditions. We examined whether deep neuromuscular block improves surgical conditions over moderate neuromuscular block during sevoflurane anaesthesia.Methods: In this single-centre, prospective, randomised, double-blind study, 98 patients scheduled for elective renal surgery were randomised to receive deep (post-tetanic count 1-2 twitches) or a moderate neuromuscular block (train-of-four 1-2 twitches). Anaesthesia was maintained with sevoflurane and titrated to bispectral index values between 40 and 50. Pneumoperitoneum pressure was maintained at 12 mm Hg. The primary outcome was the difference in surgical conditions, scored at 15 min intervals by one of eight blinded surgeons using a 5-point Leiden-Surgical Rating Scale (L-SRS) that scores the quality of the surgical field from extremely poor1 to optimal5.Results: Deep neuromuscular block did not improve surgical conditions compared with moderate neuromuscular block: mean (standard deviation) L-SRS 4.8 (0.3) vs 4.8 (0.4), respectively (P=0.94). Secondary outcomes, including unplanned postoperative readmissions and prolonged hospital admission, were not significantly different.Conclusions: During sevoflurane anaesthesia, deep neuromuscular block did not improve surgical conditions over moderate neuromuscular block in normal-pressure laparoscopic renal surgery.Clinical Trial Registration: NL7844 (www.trialregister.nl). [ABSTRACT FROM AUTHOR]

Background and aims: Deep neuromuscular blockade (NMB) is known to improve surgical conditions, compared to moderate neuromuscular blockade (NMB), which is expected to improve postoperative quality of recovery (QOR). However, it is unknown whether deep NMB improves postoperative QOR in ambulatory gynecologic laparoscopy. Therefore, we compared the effects of deep and moderate NMB on postoperative QOR in ambulatory gynecologic laparoscopy. Methodology: We included 80 female in this study. They were randomized into 2 equal groups: deep NMB (dNMB) and moderate NMB (mNMB) at constant pneumoperitoneum pressure of 12 mmHg. The primary outcome was QOR-40 at 24 h, and the secondary outcomes were duration of surgery, surgical rating scale (SRS) score, time to home discharge readiness, pain scores, and tramadol consumption. Results: The SRS scores were significantly higher in dNMB group, compared with mNMB. Mean (95% CI) SRS scores in deep NMB were 4.55 (4.52-4.58) versus 4.15 (4.11-4.19) in moderate NMB, p = 0.03. However, there was no significant difference between the two groups in the QoR-40 scores, and other secondary outcomes. Conclusion: We found no difference between deep and moderate NMB on postoperative QOR after ambulatory gynecologic laparoscopy. Therefore, deep NMB during ambulatory gynecologic laparoscopy may be unnecessary, at least in non-obese patients. Trial registration: This study was registered at www.clinicaltrials.gov (NCT04105764). [ABSTRACT FROM AUTHOR]

Background: Onset times and conditions for intubation after rocuronium versus suxamethonium at cesarean section have been evaluated, but no study thus far has examined the influence of these neuromuscular blocking drugs on the surgical conditions or their effect on the duration of surgery and the ease of fetal delivery. We aimed to compare the surgical conditions for delivery in parturients who received deep neuromuscular block with rocuronium with those who had induction with suxamethonium.Methods: Ninety patients undergoing cesarean section under general anesthesia were randomized to receive either rocuronium 0.6 mg/kg or suxamethonium 1 mg/kg for tracheal intubation and delivery. Times to delivery and the quality of surgical conditions, using a five-point Surgical Rating Scale for Delivery (SRSD) ranging from 1 (poor) to 5 (excellent), were evaluated.Results: The median SRSD (range) was found to be significantly better in the rocuronium group [4 (3-5) points vs 3 (2-4) points with suxamethonium (P <0.001)]. Whereas the mean (SD) induction-to-intubation interval was longer with rocuronium [106 (34) s vs 68 (32) s with suxamethonium (95% CI of the difference 24 to 52 s, P <0.001)], the incision-to-delivery interval was shorter in the rocuronium group [147 (68) s vs 196 (51) s with suxamethonium (95% CI of the difference -75 to -24 s, P <0.001)]. The mean induction-to-delivery intervals were similar [268 (73) s vs 276 (63) s, respectively].Conclusions: Whereas the induction-to-delivery intervals were comparable, we found rocuronium superior to suxamethonium in allowing better surgical conditions for fetal delivery, which enabled an easier delivery and a shorter incision-to-delivery interval. [ABSTRACT FROM AUTHOR]

Introduction: Subjective estimation of neuromuscular block (NMB), focused on clinical signs such as visual and tactile estimation, can be very difficult and conducted only on awake patients. Hence, it seems that usage of NMB's objective monitoring should become a component of anaestesiological equipment. Objective: The objective was to establish whether application of acceleromyography using the post-tetanic number method (PTC) for NMB's monitoring creates better conditions for surgical work in comparison to subjective, clinical monitoring of NMB. Materials and methods: This randomized clinical study included 40 patients, operated in the General surgery clinic of Clinical center in Nis. Patients were divided into 2 groups consisting of 20 patients each (n=20). Subjective, clinical monitoring of NMB was used on patients in the first group (ESMkon) in all phases of anaesthesiological flow, while PTC mode (TOF Watch® S) based acceleromyographical monitoring in different phases of NMB was used on the patients in the second group (ESMptc). The conditions were qualitatively graded as acceptable and non acceptable, as well as exceptional, satisfying and difficult, and they were mutually compared between examined groups. Statistical significance is estimated with Fisher's exact test and taken as p

Background: Few studies have examined the effect of epidural block on surgical conditions during pediatric subumbilical laparoscopic surgery involving a supraglottic airway (SGA). This study investigated the surgical condition scores for such procedures in cases where neuromuscular block, epidural block, or neither was used., Methods: A total of 150 patients aged 3-12 years undergoing laparoscopic orchiopexy with a ProSeal SGA device were randomly allocated to one of three groups: the control group (did not receive neuromuscular block and epidural block), the NMB group [received a neuromuscular block (train-of-four 1-2 twitches) using rocuronium], or the EDB group (received an epidural block using ropivacaine). The primary outcome was the quality of surgical conditions evaluated with the Leiden-Surgical Rating Scale by the blinded surgeon. The secondary outcome measures included intraoperative hemodynamic data (including mean arterial pressure and heart rate), the SGA device removal time, the PACU discharge time, the pain score in the PACU and intraoperative adverse events (including bradycardia, hypotension, peak airway pressure > 20 cmH 2 O, and poor or extremely poor surgical conditions occurred during the operation). Statistical analysis was performed with one-way analysis of variance, the Kruskal-Wallis test, the chi-square test or Fisher's exact test. Bonferroni corrections for multiple comparisons were made for primary and secondary outcomes., Results: Surgical condition scores were significantly higher in the NMB and EDB groups than in the control group (median difference: 0.8; 95% confidence interval [CI], 0.5-1.0; p  < 0.0001; and median difference: 0.7; 95% CI, 0.5-0.8; p  < 0.0001, respectively). Blood pressure and heart rate were significantly lower in the EDB group than in the other two groups ( p  < 0.0001 and p  = 0.004). Patients in the EDB group had significantly lower pain scores during PACU than those in the other two groups ( p  < 0.0001). The sufentanil dose was lower in the EDB group than in the other two groups ( p  = 0.001)., Conclusion: Epidural block can improve surgical conditions during pediatric subumbilical laparoscopic surgery involving a SGA to a degree comparable to that with moderate neuromuscular block., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Wu, Wei, Xiang, Yu, Chen, Du and Qu.)

Introduction: Sustained deep neuromuscular blockade (NMB) during laparoscopic surgery may facilitate optimal surgical conditions. This exploratory study assessed whether deep NMB improves surgical conditions and, in doing so, allows use of lower insufflation pressures during laparoscopic cholecystectomy. We further assessed whether use of low insufflation pressure improves patient pain scores after surgery.Methods: This randomized, controlled, blinded study (NCT01728584) compared use of deep (1-2 post-tetanic-counts) or moderate (train-of-four ratio 10%) NMB, and lower (8 mmHg) or higher (12 mmHg; 'standard') insufflation pressure in a 2 × 2 factorial design. Primary endpoint was surgeon's overall satisfaction with surgical conditions, rated at end of surgery using an 11-point numerical scale. Post-operative pain scores were also evaluated. Data were analyzed using analysis of covariance.Results: Of 127 randomized patients, 120 had evaluable data for the primary endpoint. Surgeon's score of overall satisfaction with surgical conditions was significantly higher with deep versus moderate NMB indicated by a least-square mean difference of 1.1 points (95% confidence interval 0.1-2.0; P = 0.026). Furthermore, strong evidence of an effect was observed for standard versus low pressure: least-square mean difference of 3.0 points (95% confidence interval 2.1-4.0; P < 0.001). No significant difference was observed in average pain scores within 24 h post-surgery for low versus standard pressure [0.17 (95% confidence interval -0.67 to +0.33); P = 0.494].Conclusions: Although associated with significantly improved surgical conditions, deep NMB alone was insufficient to promote use of low insufflation pressure during laparoscopic cholecystectomy. Furthermore, low insufflation pressure did not result in reduced pain, compared with standard pressure.Clinical Trial Registration: ClinicalTrials.gov identifier, NCT01728584.Funding: Merck Sharp and Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA. [ABSTRACT FROM AUTHOR]

Background: Globally, the major causes of neonatal deaths are birth asphyxia, prematurity and severe infections. Little attention is paid to deaths contributed by surgically amenable conditions. This study was undertaken to determine the burden and types of surgical problems encountered in the neonatal period, their outcome and challenges encountered. Patients and Methods: This was a retrospective study. The case notes of all neonates admitted into the newborn unit of our centre between April 2002 and March 2010 with surgical conditions were retrieved and the following information extracted: Sex, diagnosis, age at presentation, surgical intervention and outcome. Results: Out of 7,401 neonates admitted within the study period, 460 (6.2%) had a surgical condition. Of the 1,657 babies that died within the same period, 196 (11.8%) of them were those with surgical conditions. Congenital abnormalities accounted for 408 (88.7%) of all the surgical cases. Intestinal obstruction 129 (31.6%), neural tube defects 101 (24.8%) and anterior abdominal wall defect 58 (14.2%) were the commonest congenital abnormalities, while fracture of the long bones following birth trauma 15 (28.8%) and perforated NEC 14 (26.9%) were the commonest acquired conditions. Surgery was performed in 166 (36.1%) and 98 (59%) had postoperative complications. Significantly, more deaths occurred in preterms than in term babies (P = 0.003) and in those delivered outside the hospital than in in-born babies (P = 0.02). The major cause of death was infection in 92 (47%). Conclusion: Neonatal surgical conditions contributed significantly to both neonatal admissions and overall neonatal mortality and thus highlights the need for investments in newborn surgical care in developing countries.

Objectives To test the hypothesis that the use of a nonmuscle relaxant anesthetic technique (NMRT) during thoracotomy would be associated with comparable surgical conditions with the standard use of neuromuscular blocking drugs. Design A prospective, randomized, single-blind, controlled study. Setting A single university hospital. Participants Sixty-six patients scheduled for open thoracotomy under sevoflurane anesthesia with a target-controlled infusion (TCI) of remifentanil. Interventions After ethical approval, patients were randomly assigned to receive cisatracurium or saline (n = 33 for each group) during the entire study period. Measurements and Main Results The four-point ordinal surgical rating scale, the intubating conditions, the use of anesthetics and vasopressors, the incidence of light anesthesia (defined as an episode with state entropy values that exceeded 50 and/or mean arterial blood pressure and heart rate values that exceeded the baseline by 20% and lasted for more than 3 consecutive minutes), and the times to clinical recovery and postanesthesia care unit (PACU) discharge, hospital stays, and postoperative residual curarization (PORC) were recorded. Compared with the use of cisatracurium, the use of NMRT resulted in comparable good-to-excellent surgical rating scales (90.9% v 94.0%, respectively; p = 0.642), good-to-excellent laryngoscopy and endobronchial intubating conditions (93.9% v 100%, respectively; p>0.09), use of anesthetic and vasopressor medications, and hospital stays, together with shorter clinical recovery, extubation times (7.6 [95% CI 6.82 to 8.39] v 19.0 [95% CI 15.76 to 22.23] minutes, respectively; p<0.001), and PACU stays (37.4 [95% CI 35.09 to 39.79] v 70.9 [95% CI 56.90 to 84.91] minutes, respectively; p<0.001). The use of cisatracurium resulted in a nonstatistical number of light anesthesia episodes upon positioning, skin incision, and rib separation (p>0.624, with Fisher’s exact test). There were no failed intubations in the 2 groups. No patient received cisatracurium in the NMRT group. Two patients (6.1%) in the cisatracurium group experienced PORC that required tracheal intubation in the PACU. Conclusion The use of TCI of remifentanil with NMRT offers acceptable laryngoscopy, intubating, and surgical conditions during sevoflurane anesthesia for open thoracotomy, especially when. the anesthesiologists have more than 10 years’ experience [ABSTRACT FROM AUTHOR]

Background: We examined the impact of muscle relaxation on surgical conditions and patients' postoperative outcome during elective laparoscopic cholecystectomy under balanced anaesthesia. Methods: After approval and consent, 57 anaesthetized patients were randomly assigned to group no neuromuscular blockade (No NMB) and deep neuromuscular blockade (Deep NMB), i.e. no twitch response to train-of-four nerve stimulation. Laparoscopic cholecystectomy was performed using the 4-trocar technique with a CO-pneumoperitoneum. Surgical conditions were assessed using a Visual Analogue Scale. Movement of diaphragm or abdominal muscles, inadequate visibility, or breathing and coughing against the ventilator were documented as events reflecting inadequate muscle relaxation. Independently, surgeons could request 0.3 mg/kg rocuronium to improve surgical conditions. Workflow variables were obtained as a surrogate of surgical conditions. Data are presented as mean (95 % confidence interval). The trial is registered at ClinicalTrials.gov (NCT00895778). Results: While in 12 of 25 patients of group 'No NMB' one or more adverse events impaired the surgical procedure ( p < 0.001), only 1 of 25 patients of group 'Deep NMB' showed an adverse event. Deep NMB resulted in an absolute risk reduction of 0.44 (0.23-0.65) and a number needed to treat of 2.3 (1.5-4.4), respectively. Surgeons requested 0.3 mg/kg rocuronium in 10 of 25 cases (40 %) of group 'No NMB' only. This dose significantly improved surgical conditions by an average 62 of 100 possible points. All further variables did not differ between groups. Conclusions: Deep NMB ameliorates surgical conditions for laparoscopic cholecystectomy by improved visibility and reduction of involuntary movements. [ABSTRACT FROM AUTHOR]

Purpose: Intense neuromuscular block may improve surgical conditions in ileus laparotomies; however, it is difficult to evaluate. The aim of this study was to investigate if neuromuscular block improved surgical conditions in pigs with artificial ileus laparotomy. Methods: Six pigs were endotracheally intubated, mechanically ventilated, anesthetized with propofol and fentanyl, and randomized into two groups in a cross-over assessor-blinded design. Neuromuscular block was established with rocuronium. Artificial laparotomy for ileus was performed. We investigated the influence of intense neuromuscular block on surgical conditions with a subjective rating scale, force needed to close the fascia, incidences of abdominal contractions while suctioning the lungs, width of the wound diastase and operating time as outcome parameters. Results: In all six pigs no abdominal contractions occurred while suctioning the lungs at intense neuromuscular block. Without neuromuscular block we detected abdominal contractions seen as hiccups and bucking. In all six pigs during intense neuromuscular block we found no visible electromyographic (EMG) activity in the abdominal muscles while suctioning the lungs. Without neuromuscular block suctioning the lungs elicited brief periods of abdominal EMG activity. No difference was found in the force needed to close the fascia when comparing no neuromuscular block with intense neuromuscular block. Furthermore, no significant differences were found in the width of the diastase, operating time and subjective ratings using a four-point rating scale when comparing no neuromuscular block with intense neuromuscular block. However, these outcomes were related to the order of the suturing round. Conclusion: Intense neuromuscular block prevented abdominal muscle contractions but did not influence the force needed to close the fascia. [ABSTRACT FROM AUTHOR]

Background: Globally, the major causes of neonatal deaths are birth asphyxia, prematurity and severe infections. Little attention is paid to deaths contributed by surgically amenable conditions. This study was undertaken to determine the burden and types of surgical problems encountered in the neonatal period, their outcome and challenges encountered. Patients and Methods: This was a retrospective study. The case notes of all neonates admitted into the newborn unit of our centre between April 2002 and March 2010 with surgical conditions were retrieved and the following information extracted: Sex, diagnosis, age at presentation, surgical intervention and outcome. Results: Out of 7,401 neonates admitted within the study period, 460 (6.2%) had a surgical condition. Of the 1,657 babies that died within the same period, 196 (11.8%) of them were those with surgical conditions. Congenital abnormalities accounted for 408 (88.7%) of all the surgical cases. Intestinal obstruction 129 (31.6%), neural tube defects 101 (24.8%) and anterior abdominal wall defect 58 (14.2%) were the commonest congenital abnormalities, while fracture of the long bones following birth trauma 15 (28.8%) and perforated NEC 14 (26.9%) were the commonest acquired conditions. Surgery was performed in 166 (36.1%) and 98 (59%) had postoperative complications. Signifi cantly, more deaths occurred in preterms than in term babies (P = 0.003) and in those delivered outside the hospital than in in-born babies (P = 0.02). The major cause of death was infection in 92 (47%). Conclusion: Neonatal surgical conditions contributed signifi cantly to both neonatal admissions and overall neonatal mortality and thus highlights the need for investments in newborn surgical care in developing countries. [ABSTRACT FROM AUTHOR]

Objective: Laryngeal transoral surgery classically requires a neuromuscular block (NMB) to facilitate tracheal intubation and to improve surgical conditions. However, the short duration of most procedures and the potential complications of residual NMB lead to consider a no block approach. The hypothesis that intravenous anesthesia (remifentanil and propofol infusions) without NMB but including glottis topical lidocaine anesthesia would allow clinically acceptable laryngeal exposure and good surgical conditions was tested in the specific context of procedures undergone with High Frequency Jet Ventilation (HFJV)., Study Design: A prospective randomized clinical comparison., Methods: 66 consenting patients were planned to receive 0.6 mg·kg -1 rocuronium or saline at random. The outcome measurements included the time and conditions to complete suspended laryngoscopy, and the surgical conditions rated by the surgeon. Any vocal cord movement or coughing was recorded. Data were compared using a Wilcoxon rank-sum test for numerical variables and chi-square test for categorical ones. Treatment failure was defined as an impossible laryngoscopy or a grade 4 surgical field occurring at any time during surgery and was compared to its null theoretical value by a general z-test. An interim analysis after completion of 50% patients was performed using Pocock boundaries at 0.0294 significance levels., Results: A significant failure rate occurred in the non paralysed group (27%, p < 0.001). No coughing and no vocal cords movement occurred in the NMB group. Poorer surgical conditions were obtained without NMB (p = 0.011)., Conclusion: Inducing a deep NMB ensured improved conditions during direct laryngeal microsurgery with HFJV., (Copyright © 2021. Published by Elsevier Inc.)

Neuromuscular blockade was shown to improve surgical conditions. However, the risk of residual neuromuscular blockade upon extubation prevents anaesthesiologists from maintaining complete paralysis. For this reason, deep NMB is still underused in anaesthesia. This review focused on answering six questions revolving around the use of deep NMB versus moderate NMB. This was a non-exhaustive narrative review based on 6 selected relevant questions: does deep NMB 1) improve surgical conditions? 2) reduce surgical complications? 3) facilitate a reduction in intraoperative pneumoperitoneum pressure (PnP)? 4) does a reduction in intraoperative PnP impact clinical outcomes? 5) does the combination of deep NMB and lower PnP improve respiratory parameters? 6) improve OR efficiency or readmission rates? This review highlights some of the key studies that have demonstrated potential benefits of deep NMB, but it also included reports showing no benefit, highlighting that the evidence is not unequivocal. Deep NMB does in fact improve surgical conditions, but whether this improvement translates into improved clinical outcomes is far from concluded. Indeed, there is an increased risk or residual curarisation, especially if patients are not monitored and reversed appropriately. The most important benefit of deep NMB may be the prevention of unacceptable surgical working conditions. The other potential major benefits are the reduction in PnP and reduction in pain. Deep NMB must be used with appropriate monitoring. Deep NMB was associated with an improvement in surgical conditions, reduction in PnP, pain, and complications; but further research is needed to definitively prove this relationship. [ABSTRACT FROM AUTHOR]

• Deep neuromuscular blockade is not linked with better surgical conditions. • Intubation and extubation times with rocuronium are superior to cisatracurium. • Deep blockade was not associated with increased rate of complications. [ABSTRACT FROM AUTHOR]

Background: Untreated surgical conditions may lead to lifelong disability in children. Treating children with surgical conditions may reduce long-term effects of morbidity and disability. Unfortunately, low- and middle-income countries have limited resources for paediatric surgical care. Malawi, for example, has very few paediatric surgeons. There are also significantly inadequate infrastructures and personnel to treat these children. In order to strengthen resources that could provide such services, we need to begin by quantifying the need., Aim: To estimate the approximate prevalence of surgical conditions among children in Malawi, to describe the anatomical locations and diagnoses of the conditions and the presence of injuries., Methods: A cross-sectional, nationwide survey of surgical needs was performed in 28 of 29 districts of Malawi. Villages, households and household members were randomly selected. A total of 1487 households were visited and 2960 persons were interviewed. This paper is a sub analysis of the children in the dataset. Information was obtained from 255 living children and inquiry from household respondents for the 255 children who had died in the past year. The interviews were conducted by medical students over a 60-day period, and the validated SOSAS tool was used for data collection., Results: There were 67 out of 255 (26.3%) total children living with a surgical condition at the time of the study, with most of the conditions located in the extremities. Half of the children lived with problems due to injuries. Traffic accidents were the most common cause. Two-thirds of the children living with a surgical condition had some kind of disability, and one-third of them were grossly disabled. There were 255 total deceased children, with 34 who died from a surgical condition. The most prevalent causes of death were congenital anomalies of the abdomen, groin and genital region., Conclusion: An extrapolation of the 26% of children found to be living with a surgical condition indicates that there could be 2 million children living with a condition that needs surgical consultation or treatment in Malawi. Congenital anomalies cause significant numbers of deaths among Malawian children. Children living with surgical conditions had disorders in their extremities, causing severe disability. Many of these disorders could have been corrected by surgical care., (© 2021 The College of Medicine and the Medical Association of Malawi.)

Introduction There is a lack of knowledge on the average length of stay (LOS) in neonatal units after surgical repair of common congenital anomalies. There are few if any publications reporting the activity performed by units undertaking neonatal surgery. Such activity is important for contracting arrangements, commissioning specialist services and counselling parents. The aim of this study was to describe postnatal LOS for infants admitted to a single tertiary referral neonatal unit with congenital malformations requiring surgery. Methods Data on nine conditions were collected prospectively for babies on the neonatal unit over a five-year period (2006-2011). For those transferred back to their local unit following surgery, the local unit was contacted to determine the total LOS. Only those babies who had surgery during their first admission to our unit and who survived to discharge were included in the study. Cost estimates were based on the tariffs agreed for neonatal care between our trust and the London specialised commissioning group in 2011-2012. Results The median LOS for the conditions studied was: gastroschisis 35 days (range: 19-154 days), oesophageal atresia 33 days (range: 9-133 days), congenital diaphragmatic hernia 28 days (range: 7-99 days), intestinal atresia 24 days (range: 6-168 days), Hirschsprung's disease 21 days (range: 15-36 days), sacrococcygeal teratoma 17 days (range: 12-55 days), myelomeningocoele 15.5 days (range: 8-24 days), anorectal malformation 15 days (range: 6-90 days) and exomphalos 12 days (range: 3-228 days). The total neonatal bed day costs for the median LOS ranged from £8,701 (myelomeningocoele) to £23,874 (gastroschisis). The cost of surgery was not included. Conclusions There is wide variation in LOS for the same conditions in a single neonatal unit. This can be explained by different types and severity within the same congenital anomalies, different surgeons and other clinical confounders (eg sepsis, surgical complications, associated anomalies). These data will enable us to give more detailed information to families following prenatal or postnatal diagnosis. They also allow more detailed planning of resource allocation for neonatal admissions.

Background: Data on paediatric surgical conditions in sub-Saharan countries, including Ghana, are scanty and sketchy. Using hospital-based data, it is possible to assess the epidemiology of diseases among children, and the morbidity and mortality rates. Methods: Between January 1997 and December 2000, records of 1200 children treated consecutively with elective surgery at Komfo Anokye Teaching Hospital in Kumasi, Ghana, were analysed for name, age, sex, postoperative diagnosis, procedure carried out and outcome of treatment Results: The ages of the children ranged from 0 to 14 years, with a mean age of 3.5 years (95% confidence interval: 3.3-3.7) with a boy/girl ratio of 3.1:1. Congenital anomalies were the most common problem (83%), followed by tumours (4%), cysts (3%), uncircumcised penis (2%), and lymphadenopathy of varying aetiologies (2%). The most common congenital anomaly was inguinal hernia, and the rarest, biliary atresia. Eighty-two percent of the children in this series were treated as day-care cases. Overall mortality in the series was 0.8%. Conclusions: The data reviewed here demonstrate that there is a wide range of surgical conditions among children in the developing world. This poses a significant health-care problem and calls for improved management of such paediatric surgical problems to prevent high morbidity and mortality rates in African children. [ABSTRACT FROM AUTHOR]

Background: To assess the preoperative nutritional status of patients with various disorders and to provide data for pre- and postoperative patient management plans, particularly in the elderly. There is no published information on age-matched and disease-matched preoperative nutritional/immunologic status for orthopedic patients, especially in the elderly, in Jeju., Methods: In total, 331 patients with four categories of orthopedic conditions were assessed: 92 elective surgery patients, 59 arthroplasty patients, 145 patients with fractures, and 35 infection patients. Malnutrition was defined as body mass index (BMI) below 18 kg/m(2) of expected body weight (below 20% of normal), serum albumin/globulin ratio below 1.5 (normal range, 1.5 to 2.3), albumin level below 3.5 g/dL, total lymphocyte count below 1,500 cells/mm(3), and lymphocyte/monocyte ratio below 5 versus 1., Results: In 92 elective surgery patients, the average BMI was 23 kg/m(2), hemoglobin was 15 g/dL, lymphocytes (2,486 cells)/monocytes (465 cells) ratio was 6.1, and the albumin (4.4 g/dL)/globulin (2.5 g/dL) ratio as a protein quotient was 1.7. Among the 59 hip and knee arthroplasty patients, the average BMI was 25 kg/m(2), hemoglobin was 12 g/dL, lymphocytes (2,038 cells)/monocytes (391 cells) ratio was 6.6, and albumin (4.1 g/dL)/globulin (2.4 g/dL) ratio was 1.6. No subject showed malnutrition. Among the 145 fracture patients, the average BMI was 23 kg/m(2). The hemoglobin level was 13 g/dL, monocytes (495 cells)/lymphocytes (1,905 cells) ratio was 1 versus 4.6, and albumin (4.1 d/gL)/globulin (2.5 d/gL) ratio was 1.6. However, both ratios decreased after 70 years of age. Among the 17 of 35 infection patients, albumin levels were below 3.5 g/dL, the average BMI was 22 kg/m(2), lymphocytes (1,532 cells)/monocytes (545 cells) ratio was 2.4 versus 1, and albumin (3.0 g/dL)/globulin (3.3 g/dL) ratio was 0.9, while in 18 patients albumin levels were over 3.5 g/dL, the average BMI was 22 kg/m(2), hemoglobin was 12 g/dL, lymphocytes (1,998 cells)/monocytes (583 cells) ratio was 3 versus 1, and albumin/globulin ratio was 1.4. Thus, in the infection group, approximately 50% of the patients showed poor nutrition and immunosuppression., Conclusions: It was found that nutritional and immune condition deteriorated gradually to some degree in elderly patients over 60 years of age.

In the present study, the left anterior descending coronary arteries of mice under anesthesia were ligated, and the optimal surgical conditions for coronary artery ligation (CAL) in the establishment of a myocardial infarction (MI) mouse model were investigated. All mice that survived were sacrificed seven days subsequent to the successful surgery. Body weight, blood serum and heart tissues were obtained for further analysis or biochemical and histopathological examinations. The survival rate of the mice following the CAL procedure was 70%. The aspartate aminotransferase (AST), creatine kinase (CK) and lactate dehydrogenase (LDH) concentrations in the serum of the experimental mice were significantly increased compared with those of the control mice, which reflected the enzyme release from the infarcted myocardial cells. Histopathological examination showed different degrees of MI in the heart tissues of the experimental mice. The results indicate that an MI model in mice may be successfully established using CAL under the surgical conditions utilized in the present study. These conditions were cost effective and the results may be replicated by laboratories that are less well-equipped.