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Objective:To investigate the effect of combined use of midazolam and remifentanil without muscle relaxant on tracheal intubation in female patients undergoing breast surgery.Methods:A retrospective analysis was performed on 40 female patients with breast disease who underwent tracheal intubation and general anesthesia at The First Affiliated Hospital of Zhengzhou University between January 2023 and June 2023. These patients were divided into a control group ( n = 20) and an observation group ( n = 20) based on whether muscle relaxants were applied at the time of intubation. The control group received intravenous rocuronium bromide, whereas the observation group did not use muscle relaxants. Both groups were intravenously administered midazolam (0.1 mg/kg) and remifentanil (4 μg/kg) prior to tracheal intubation. The intubation conditions were evaluated based on factors such as the ease of inserting the laryngoscope and the patient's response to intubation, including coughing. Results:There were no statistically significant differences in age, height, and body mass between the two groups (all P > 0.05). The excellent rate of intubation conditions was significantly lower in the observation group compared with the control group [45% (9/20) vs. 85% (17/20), χ2 = 7.03, P = 0.008). The good rate of intubation conditions was significantly higher in the observation group compared with the control group [40% (8/20) vs. 5% (1/20), χ2 = 7.03, P < 0.05]. There was no statistically significant difference in the excellent and good rates of intubation conditions between the observation and control groups [85% (17/20) vs. 90% (18/20), χ2 = 0.23, P > 0.05]. No significant difference in intraoperative awareness score was observed between the observation and control groups [(2.59 ± 0.44) points vs. (2.61 ± 0.31) points, P > 0.05]. None of the patients in either group exhibited any episodes of arrhythmias. Furthermore, no adverse reactions such as muscle stiffness, nausea, vomiting, or skin itching were observed in either group following the surgical procedure. Conclusion:Without the use of muscle relaxants, intravenous administration of midazolam at 0.1 mg/kg and remifentanil at 4 μg/kg for tracheal intubation in female patients undergoing breast surgery can offer excellent intubation conditions, ensuring that the patient remains unconscious throughout the surgical procedure.
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Objective To compare the anesthetic effect and safety of Ciprofol and Propofol combined with Fentanyl in painless bronchoscopy for conscious patients in intensive care unit(ICU).Methods 60 conscious patients who underwent painless bronchoscopy from October 2022 to January 2023 were selected.According to the random number table method,30 cases were divided into the control group(Propofol 1.5 mg/kg + Fentanyl 1 μg/kg)and 30 cases were divided into the experimental group(Ciprofol 0.4 mg/kg + Fentanyl 1 μg/kg).Systolic blood pressure,diastolic blood pressure,heart rate,respiratory frequency,and percutaneous arterial oxygen saturation(SpO2)were recorded before anesthesia(T1),during the examination(T2),and at the completion of the examination(T3)in the two groups,and the success rate of induction of general anesthesia,the time of induction of anesthesia,the time of bronchoscopy,the time of eye-opening,the total dosage of medications used,the incidence of injection pain,and the incidence of intraoperative adverse reactions(hypotension,respiratory depression,bradycardia,and bucking)in the two groups were compared.Results Analysis of the data revealed significant group,time,and interaction effects for systolic blood pressure,diastolic blood pressure,heart rate,and respiratory frequency at different time points(P<0.05).The experimental group had a shorter induction time of anesthesia[1.40(1.10,1.62)min]in comparison to the control group[1.60(1.30,2.10)min](P<0.05),and the experimental group required a less amount of drug to achieve the desired outcome[(21.40±1.82)mg]compared to the control group[(78.75±6.71)mg](P<0.05).Furthermore,the incidence of injection pain(3.33%)and respiratory depression(6.67%)was significantly reduced in the experimental group compared to the control group(36.67%)and(30.00%)(P<0.05).Conclusion The use of Ciprofol in combination with Fentanyl has been found to provide effective anesthesia during bronchoscopy,while also increasing safety and decreasing the incidence of adverse events.It is worthy of clinical application.
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Objective To explore the pharmacokinetic changes of single dose of fentanyl in rats in a simulated high-altitude and contributing factors.Methods Thirty-six healthy female SD rats(6～8 weeks old,250±20 g)were randomly divided into high-altitude-acute-exposure group(group A),high-altitude-chronic-exposure group(group S)and control group(group C)through random number table,with 12 rats in each group.The group A and S were housed in a low-pressure chamber simulating the high altitude of 5000 m above sea level for 3 and 30 d respectively,and the group C was housed out of the chamber(at an altitude of 300 m).A single dose of fentanyl was administered through the femoral vein to 6 rats randomly selected from each group.Liquid chromatography tandem mass spectrometry(LC-MS/MS)was used to detect blood concentrations of fentanyl and WinNonlin 8.2 software was used to calculate the pharmacokinetic parameters,while blood samples were taken through the femoral artery before and in 1,2,4,8,15,30,60,120 and 180 min after administration.The remaining 6 rats were ultrasonographically assessed for portal vein internal diameter(PVD),peak flow velocity(PVV)and blood flow(PVF),and liver tissues were collected for CYP3A1 protein content assay.Results The blood drug concentrations of fentanyl in the group A and group S were significantly lower than those in the group C at 60,120,and 180 min(P=0.002,P＜0.001,P= 0.001).Compared with the group C,the clearance rate(CL)of the group A was increased by 54.06%(P=0.021),and the mean residence time(MRTlast)was shortened by 24.21%(P=0.033);CL of the group S was increased by 50.10%(P=0.041),the area under the concentration-time curve(AUC0-t,AUC0-∞)and MRTlast were reduced by 18.92%(P=0.039),27.54%(P=0.018)and 33.61%(P= 0.004),respectively.PVD and PVF in the group S increased by 10.87%(P=0.006)and 42.50%(P= 0.006)when compared with the group C.The CYP3A1 protein content in the group A was 28.74%,which was higher than that in the group C(P=0.048).Conclusion Fentanyl is cleared significantly faster after a single dose in rats in simulated high-altitude,which may be related to the increased liver blood flow and increased CYP3A1 protein expression in liver.
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Objective:To analyze the efficacy and safety of nalbuphine for analgesia in patients with non-mechanical ventilation in intensive care unit (ICU).Methods:From December 2018 to August 2021, a multicenter randomized controlled clinical study was conducted to select non-mechanical ventilation patients with analgesic needs admitted to ICU of four hospitals in Henan Province and Guizhou Province. Patients were randomly assigned to nalbuphine group and fentanyl group. The nalbuphine group was given continuous infusion of nalbuphine [0.05~0.20 mg/(kg·h)], and the fentanyl group was given continuous infusion of fentanyl [0.5~2.0 μg/(kg·h)]. The analgesic target was critical-care pain observation tool (CPOT) score<2. The observation time was 48 hours. The primary endpoint was CPOT score, the secondary endpoints were Richmond agitation-sedation score (RASS), ICU length of stay, adverse events, and proportion of mechanical ventilation. The quantitative data of the two groups were compared by t test or Mann-Whitney U test. The enumeration data were compared by chi square test or Fisher exact probability method. The data at different time points between groups were compared by repeated measures analysis of variance. Results:A total of 210 patients were enrolled, including 105 patients in the nalbuphine group and 105 patients in the fentanyl group. There was no significant difference in baseline data between the two groups (all P>0.05). There was no significant difference in CPOT score between nalbuphine group and fentanyl group at each time point after medication ( P>0.05), the CPOT score of both groups at each time point after medication was significantly lower than that before medication, and the analgesic target could be achieved and maintained 2 hours after medication. There was no significant difference in RASS between the two groups at each time point after medication ( P>0.05), which was significantly lower than that before medication, and the target sedative effect was achieved 2 hours after medication. There was no significant difference in ICU length of stay between nalbuphine group and fentanyl group [5.0(4.0,7.5) d vs. 5.0(4.0,8.0) d, P=0.504]. The incidence of delirium, nausea and vomiting, abdominal distension, pruritus, vertigo and other adverse events in the nalbuphine group was lower than that in the fentanyl group (all P<0.05). There was no significant difference in the incidence of other adverse events such as deep sedation, hypotension and bradycardia between the two groups (all P>0.05). The incidence of respiratory depression in nalbuphine group was not significantly different from that in fentanyl group ( P>0.05), but the proportion of mechanical ventilation was significantly lower than that in the fentanyl group [1.9% (2/105) vs. 8.6%(9/105), P=0.030]. Conclusions:Nalbuphine could be used for analgesia in ICU patients with non-mechanical ventilation. The target analgesic effect could be achieved within 2 hours, and it had a certain sedative effect with a low incidence of adverse reactions.
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Systemic administration of opioids rarely causes pruritus, although its mechanism is still not clearly understood. We report an intractable pruritus induced by a change in the dosage form of opioids with the same dose by the conversion ratio, which promptly disapeared with opioid switching. A 80-year-old female experienced worsening dorsal pain and abdominal pain due to recurrent pancreatic cancer. The relief of pain was insufficient with the administration of oral hydromorphone 10 mg/day, changing to continuous intravenous hydromorphone 3 mg/day considering adjustability. The next day, her pain was reduced, but the pruritus appeared. Administering oral and topical antihistamines was ineffective. Her pruritus tended to worsen with continued administration of continuous intravenous hydromorphone at the same dose. Hence we switched to fentanyl patch 0.6 mg/day. The following day, her pruritus significantly decreased, and two days later, her pruritus almost disappeared. This case suggests that opioids switching to fentanyl patch may be effective to relieve pruritus caused by hydromorphone.
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Abstract Background: Many adjuvants are added to prolong the effects of spinal analgesia. We investigated the postoperative analgesic efficacy of the addition of midazolam or fentanyl to intrathe-cal levobupivacaine in women undergoing cesarean delivery. Methods: Eighty patients were randomly assigned to two groups (n = 40). Group M received 10 mg of 0.5% levobupivacaine plus 2 mg of midazolam. Group F received 10 mg of 0.5% levobupivacaine plus 25 μg of fentanyl. Assessments included motor and sensory block, APGAR score, time to first request for analgesia, postoperative pain score, total consumption of rescue analgesics, and adverse effects. Results: Sensory blockade was prolonged in Group M compared with Group F (215.58 ± 27.94 vs. 199.43 ± 19.77 min; p = 0.004), with no differences in other characteristics of the spinal block in intraoperative hemodynamics or APGAR score. The mean time to first request for rescue analgesia was longer in Group M (351.45 ± 11.05 min) than in Group F (268.83 ± 10.35 min; p = 0.000). The median total consumption of rescue analgesics in the first 24 hours postoperatively was 30 mg in Group M vs. 60 mg in Group F (p = 0.003). The median Visual Analog Scale (VAS) scores were lower in Group Ethan in Group F from the 8th to the 12th hour postoperatively, with no differences between the groups at other time points. The incidence of adverse effects was higher in Group F than in Group M. Conclusion: Intrathecal midazolam (2 mg) was superior to intrathecal fentanyl (25 μg) in increasing the duration of the sensory blockade and postoperative analgesia with lower postoperative pain scores and decreasing the incidence of adverse effects.
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Abstract Background and objective: Anesthesia induction can produce severe propofol dose-dependent hypotension. Fentanyl coadministration reduces the catecholaminergic response to orotracheal intubation allowing propofol dose reduction. The aim of this study is to determine whether the hemodynamic response is improved by increasing the time between fentanyl and propofol administration and reducing the dose of the latter without increasing the time to achieve optimal hypnosis. Methods: After approval by the Research Ethics Committee, patients undergoing non-cardiac surgery with endotracheal intubation were randomized by a computer-generated table into six time-dose groups (1 or 2 minutes/1, 1.5, or 2mg.kg-1 of propofol). Patients with high bronchoaspiration risk, a difficult airway, hemodynamic instability, or anesthetic allergies were excluded. After giving intravenous fentanyl (2 μg.kg-1 ), each group received different doses of propofol after 1 or 2 minutes. Non-invasive blood pressure (BP) and heart rate (HR) were measured at pre-induction, pre-intubation, and post-intubation. Time to hypnosis (bispectral index < 60) was also recorded. Results: Of the 192 recruited patients, 186 completed the study (1 min group n = 94; 2 min group n = 92). It was observed that HR and BP decreased after propofol administration and increased after intubation in all groups (p<0.0001). In patients over 55 years, the 2 min - 2 mg.kg-1 group showed the greatest systolic BP reduction (36 ± 12%) at pre-intubation, while the 1 min - 1.5 mg.kg-1 group showed the least hemodynamic alteration between pre- and post-intubation (-4 ± 13%). No significant differences were found in younger patients or in the time to reach hypnosis between the six groups. While no cases of severe bradycardia were recorded, 5,4% of the sample required vasopressors. Conclusion: Increasing the time between the administration of fentanyl and propofol by up to two minutes results in greater hypotension in patients over 55 years.
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Resumen: Introducción: la concentración y velocidad en la administración de la anestesia multimodal intratecal con fentanilo en cesáreas mejoran la eficacia anestésica manteniendo buen control hemodinámico. Objetivo: evaluar si algunos cambios en la anestesia multimodal intratecal mejoran su eficacia y seguridad en cesáreas. Material y métodos: ensayo clínico, controlado, aleatorizado, doble ciego en mujeres embarazadas programadas para cesárea, distribuidas en tres grupos: grupo F6B2: fentanilo 65 μg + bupivacaína hiperbárica 2.5 mg + morfina 10 μg + dexmedetomidina 5 μg; grupo F6B3: fentanilo 60 μg + bupivacaína hiperbárica 3 mg+ morfina 100 μg+ dexmedetomidina 5 μg; y grupo F7B2: fentanilo 70 μg + bupivacaína hiperbárica 2 mg + morfina 100 μg + dexmedetomidina 5 μg. Se evaluó la eficacia anestésica previo a la incisión, durante la disección de la pared abdominal, al ingreso a cavidad abdominal, en la revisión de correderas parietocólicas y en el postquirúrgico inmediato, así como los signos vitales. Resultados: los grupos F6B2 y F6B3 resultaron tener mayor eficacia anestésica en la revisión de correderas parietocólicas (p = 0.02) y el grupo F7B2 el de mayor seguridad con mejor control hemodinámico a los minutos 1 y 10 (p = 0.03 y p = 0.03 respectivamente). Conclusiones: los cambios en la administración de la anestesia multimodal intratecal con fentanilo mejoraron la eficacia anestésica, pero disminuyen la seguridad sobre el control hemodinámico.
Abstract: Introduction: the concentration and speed in the administration of intrathecal multimodal anesthesia with fentanyl in cesareans section improve anesthetic efficacy while maintaining good hemodynamic control. Objective: to evaluate if some changes in intrathecal multimodal anesthesia improve its efficacy and safety in cesareans section. Material and methods: clinical trial, controlled, randomized, double blind; in pregnant women scheduled for cesarean section, divided into 3 groups: group F6B2: fentanyl 65 μg + hyperbaric bupivacaine 2.5 mg+ morphine 100 μg+ dexmedetomidine 5 μg; group F6B3: fentanyl 60 μg + hyperbaric bupivacaine 3 mg + morphine 100 μg + dexmedetomidine 5 μg; and group F7B2: fentanyl 70 μg + hyperbaric bupivacaine 2 mg + morphine 100 μg + dexmedetomidine 5 μg. The anesthetic efficacy was evaluated prior to the incision, during the dissection of the abdominal wall, upon the admission to the abdominal cavity, in the review of paracolic slides and in the immediate postoperative period, as well as the vital signs. Results: the F6B2 and F6B3 groups turned out to have greater anesthetic efficacy in the revision of paracolic slides (p = 0.02) and the F7B2 group had the highest safety with better hemodynamic control at 1 and 10 minutes (p = 0.03 and p = 0.03, respectively). Conclusions: changes in the administration of intrathecal multimodal anesthesia with fentanyl improved anesthetic efficacy, but decreased safety over hemodynamyc control.
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Resumen: Introducción: El fentanilo ofrece buena eficacia anestésica, con menores efectos sobre el sistema nervioso simpático, al mantener un mejor estado hemodinámico, pero su efecto en combinación con otros anestésicos en embarazadas no está del todo descrito. Objetivo: Evaluar la eficacia anestésica y seguridad de la anestesia multimodal con fentanilo en mujeres embarazadas durante la cesárea. Material y métodos: Ensayo clínico, controlado, aleatorizado, doble ciego; en mujeres embarazadas programadas para cesárea, distribuidas en tres grupos: grupo FBMD: fentanilo 70 μg + bupivacaína hiperbárica 0.1%, 2 mg, + morfina 100 μg + dexmedetomidina 5 μg; grupo BFM: bupivacaína hiperbárica 0.25%, 5 mg, + fentanilo 25 μg + morfina 100 μg, y el grupo BM: bupivacaína hiperbárica 0.375%, 7.5 mg, + morfina 100 μg. Se evaluó la eficacia anestésica previo a la incisión, durante la disección de la pared abdominal, al ingreso a cavidad abdominal, en la revisión de correderas parietocólicas y en el postquirúrgico inmediato, así como, los signos vitales. Resultados: Se analizaron 180 mujeres. El grupo FBMD mostró mayor eficacia anestésica en la revisión de correderas parietocólicas (p = 0.01) y en el postquirúrgico inmediato (p = 0.0001), así como mayor seguridad con mejor control hemodinámico a los minutos uno y 10 (p = 0.02 y p = 0.03, respectivamente). Conclusiones: La anestesia multimodal con FBMD demuestra mejor eficacia anestésica y seguridad sobre el control hemodinámico.
Abstract: Introduction: Fentanyl offers good anesthetic efficacy and fewer effects on the sympathetic nervous system with better hemodynamic status, but its effect in combination with other anesthetics in pregnant women has not been fully described. Objective: To evaluate the anesthetic efficacy and safety of multimodal anesthesia with fentanyl in pregnant women undergoing caesarean section. Material and methods: Controlled, randomized, double blinded clinical trial; in pregnant women scheduled for cesarean section distributed in 3 groups: FBMD group: fentanyl 70 μg + hyperbaric bupivacaine 0.1%, 2 mg, + morphine 100 μg + dexmedetomidine 5 μg; BFM group: hyperbaric bupivaine 0.25%, 5 mg, + fentanyl 25 μg + morphine 100 μg, and group BM: hyperbaric bupivacaine 0.375%, 7.5 mg, + morphine 100 μg. The anesthetic efficacy was evaluated: prior to the incision, during the dissection of the abdominal wall, upon entry to the abdominal cavity, in the revision of parietocolic slides and in the immediate postoperative period, as well as the vital signs. Results: 180 women were analyzed. The FBMD group showed greater anesthetic efficacy in the revision of parietocolic slides (p = 0.01) and in the immediate postoperative period (p = 0.0001) and greater safety, showing better hemodynamic control at minutes 1 and 10 (p = 0.02 y p = 0.03 respectively). Conclusions: Multimodal anesthesia with FMBD shows better anesthetic efficacy and safety over hemodynamic control.
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ABSTRACT Synthetic opioids have played a significant role in the current opioid crisis in the United States (U.S.) and Canada and are a matter of concern worldwide. New psychoactive opioids (NPOs) are classified in the internationally recognized new psychoactive substances (NPSs) category. This group comprises compounds that may have been synthesized decades ago but appeared only recently in the illicit drug market. Such is the case of fentanyl, fentanyl analogs, and non-fentanyl opioids. Most NPOs have effects similar to morphine, including euphoria and analgesia, and can produce fatal respiratory depression. Here, we present an overview of the systemic and molecular effects of main NPOs, their classification, and their pharmacological properties. We first review the fentanyl group of NPOs, including the four compounds of clinical use (fentanyl, alfentanil, sufentanil, and remifentanil) and the veterinary drug carfentanil. We also provide essential information on non-medical fentanyl analogs and other synthetic opioids such as brorphine, etonitazene, and MT-45, used as adulterants in commonly misused drugs. This paper also summarizes the scarce literature on the use of NPOs in Mexico. It concludes with a brief review of the challenges to prevention and treatment posed by NPOs and some recommendations to face them.
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ABSTRACT This review focuses on the effects and mechanisms of action of amphetamine-type stimulants (ATS) and their adverse effects on the cardiovascular, nervous, and immune systems. ATS include amphetamine (AMPH), methamphetamine (METH, "crystalmeth," or "ice"), methylenedioxymethamphetamine (MDMA, "ecstasy," or "Molly"), MDMA derivatives (e.g., methylenedioxyamphetamine [MDA] and methylenedioxy-N-ethylamphetamine [MDEA]), khat, and synthetic cathinones. The first section of this paper presents an overview of the historical aspects of ATS use, their initial clinical use, and regulations. The second part reviews the acute and chronic impact and the most salient clinical effects of ATS on the central nervous and cardiovascular systems, skin, and mouth. The chemical structure, pharmacokinetics, and classic and non-canonical pharmacological actions are covered in the third section, briefly explaining the mechanisms involved. In addition, the interactions of ATS with the central and peripheral immune systems are reviewed. The last section presents data about the syndemic of ATS and opioid use in the North American region, focusing on the increasing adulteration of METH with fentanyl.
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Abstract Introduction Spinal infusions of either fentanyl or sufentanil have been reported in international reports, articles, and scientific events worldwide. This study aimed to determine whether intrathecal fentanyl or sufentanil offers safety in mortality and perioperative adverse events. Methods MEDLINE (via PubMed), EMBASE, CENTRAL (Cochrane library databases), gray literature, hand-searching, and clinicaltrials.gov were systematically searched. Randomized controlled trials with no language, data, or status restrictions were included, comparing the effectiveness and safety of adding spinal lipophilic opioid to local anesthetics (LAs). Data were pooled using the random-effects models or fixed-effect models based on heterogeneity. Results The initial search retrieved 4469 records; 3241 records were eligible, and 3152 articles were excluded after reading titles and abstracts, with a high agreement rate (98.6%). After reading the full texts, 76 articles remained. Spinal fentanyl and sufentanil significantly reduced postoperative pain and opioid consumption, increased analgesia and pruritus. Fentanyl, but not sufentanil, significantly reduced both postoperative nausea and vomiting, and postoperative shivering; compared to LAs alone. The analyzed studies did not report any case of in-hospital mortality related to spinal lipophilic opioids. The rate of respiratory depression was 0.7% and 0.8% when spinal fentanyl or sufentanil was added and when it was not, respectively. Episodes of respiratory depression were rare, uneventful, occurred intraoperatively, and were easily manageable. Conclusion There is moderate to high quality certainty that there is evidence regarding the safety and effectiveness of adding lipophilic opioids to LAs in spinal anesthesia.
Subject(s)
Humans , Fentanyl/adverse effects , Anesthesia, Spinal/adverse effects , Pain, Postoperative , Sufentanil/adverse effects , Non-Randomized Controlled Trials as Topic , Analgesics, Opioid/adverse effects , Anesthetics, Local/adverse effects摘要
Background: Intense sympathetic activity is linked to laryngoscopy and endotracheal intubation, which could lead to intraoperative problems. We undertook this study to compare the effects of preoperative nebulized Fentanyl and Dexmedetomidine on hemodynamic response to laryngoscopy and endotracheal intubation, taking advantage of their high bioavailability and better absorption through nasal mucosa. Aim and Objectives: The objectives of the study were (i) to compare the effect of preoperative nebulization on the hemodynamic response to laryngoscopy and intubation; and (ii) to assess intraoperative requirement of anesthetic agents. Materials and Methods: This prospective, randomized, and comparative study was conducted among 100 American Society of Anesthesiologists (ASA) I, II patients (of either gender) undergoing elective surgeries and requiring tracheal intubation, were randomized in two groups. Group A was given Fentanyl Nebulization (2 ?g/kg in 4 ml of 0.9% saline) and Group B was given Dexmedetomidine nebulization (1 ?g/kg in 4 ml of 0.9% saline) 10 min before anesthesia induction. Hemodynamic parameters were noted before and immediately after induction, 1 min, 5 min and 10 min after intubation. The main goal was to assess how Fentanyl and dexmedetomidine nebulization affect the laryngoscopy and intubation-induced stress response. The secondary outcome was to assess the intraoperative requirement of anesthetic agents, observe adverse effects of study drug and sedation score. Results: Dexmedetomidine nebulization was found to be more effective in blunting rise in heart rate post laryngoscopy compared to Fentanyl Nebulization (P < 0.0001) as well as in MAP after 10 min of intubation (P < 0.0001). Requirement of propofol was seen to be significantly reduced in Group B compared to Group A (P < 0.05). Sedation scores were significantly higher in Group B (P < 0.05). No evidence of side effects was observed in any group. Conclusion: Nebulisation of dexmedetomidine was found to be more effective in attenuation of stress response of laryngoscopy and intubation compared to nebulisation of fentanyl, with stable intraoperative hemodynamic and no significant side effects.
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Background & objectives: Intranasal midazolam-fentanyl is commonly used as pre-medication in paediatric patients, but there is a risk of respiratory depression with this combination. Dexmedetomidine is a drug that preserves respiratory function. The objective of this study was to compare the efficacy of intranasal midazolam-fentanyl and dexmedetomidine-fentanyl in paediatric patients undergoing elective surgeries. Methods: Hundred children in the age group of 3-8 yr of American Society of Anaesthesiologists physical status grade 1 were randomized into two groups- group A received intranasal midazolam (0.2 mg/kg)-fentanyl (2 ?g/kg) and group B received intranasal dexmedetomidine (1 ?g/kg)-fentanyl (2 ?g/kg) 20 min before induction of general anaesthesia. Heart rate and SpO2 were monitored. Sedation score, parental separation and response to intravenous cannulation were seen after 20 min. Children were monitored for 2 h for post-operative analgesia by Oucher’s Facial Pain Scale. Results: Sedation scores were satisfactory in both groups, although children in group A were more sedated than in group B. Parental separation and response to intravenous cannulation were comparable in both the groups. The two groups were also haemodynamically comparable intraoperatively. Post-operative heart rate was also comparable at all-time intervals in both the groups except for heart rate at 100 and 120 min which were more in group A. Group A experienced more post-operative pain as assessed by Oucher’s Facial Pain Scale as compared to group B. Children receiving intranasal dexmedetomidine- fentanyl had better post-operative analgesia as compared to those who received intranasal midazolam-fentanyl. Interpretation & conclusions: Both intranasal midazolam with fentanyl and intranasal dexmedetomidine with fentanyl provided satisfactory sedation. Both groups were comparable in separation reaction and response to intravenous cannulation with better post-operative analgesia in children receiving intranasal dexmedetomidine-fentanyl.
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Introducción: Los procedimientos anestésicos fuera de quirófano se han incrementado. Ahora se añade el reto del manejo del paciente con COVID-19, dentro de estos esta la colonoscopia que debe realizarse bajo sedoanalgesia, no se cuenta con un fármaco ideal por lo que se realizan combinaciones para la seguridad del paciente y personal de salud. Objetivo: Comparar la seguridad de sedoanalgesia con propofol-fentanilo vs propofol-ketamina en pacientes con COVID-19 sometidos a colonoscopia. Material y métodos: Se realizó un estudio experimental, transversal, comparativo con 60 pacientes sometidos a colonoscopia, estos fueron seleccionados por sucesión en 2 grupos: grupo A (propofol-fentanil) y grupo B (propofol-ketamina). Grupo A: fentanil 1 ug/kg y posteriormente propofol a 0,5 a 1,5 mg/kg, y mantenimiento con bolos de propofol a 0,5 mg/kg. Grupo B: se preparó mezcla de propofol-ketamina a proporción de 4:1, en la inducción se utilizó propofol (1mg/kg) y ketamina (0,25mg/kg), mantenimiento propofol (5 mg/kg/h) y ketamina (1,25 mg/kg/h). La información fue recolectada de fuentes primarias, se empleó el programa estadístico SPSS versión 22.0. Resultados: El grupo A tuvo tendencia a la bradicardia e hipotensión, además de mayor depresión respiratoria con una frecuencia de 4 (13,3%) en relación a 1 (3,3%) en el grupo ketofol. Conclusión: el ketofol demostró ser más seguro en comparación a propofol- fentanil para la sedoanalgesia en colonoscopia de pacientes COVID-19.
Introduction: Anesthetic procedures outside the operating room have increased. Now the challenge of managing patients with COVID-19 is included, within these is the colonoscopy that must be performed under sedo-analgesia, there is no an ideal drug so combinations are made for the safety of the patient and the health staff. Objective: To compare the safety of sedo-analgesia with propofol-fentanyl vs propofol-ketamine in patients with COVID-19 undergoing colonoscopy. Material and methods: An experimental, cross-sectional, comparative study was carried out in 60 patients submitted to colonoscopy, these were selected by succession into 2 groups: group A (propofol-fentanyl) and group B (propofol- ketamine). Group A: fentanyl 1 ug/kg and later propofol at 0.5 to 1.5 mg/kg, and maintenance with propofol boluses at 0.5 mg/kg. Group B: a mixture of propofol- ketamine was prepared at a ratio of 4:1, in induction propofol (1 mg/kg) and ketamine (0.25 mg/kg) were used, propofol maintenance (5 mg/kg/h) and ketamine (1.25 mg/ kg/h). The information was collected from primary sources, the statistical program SPSS version 22.0 was used. Results: Group A had a tendency to bradycardia and hypotension, as well as greater respiratory depression with a frequency of 4 (13.3%) in relation to 1 (3.3%) in the ketofol group. Conclusion: Ketofol has shown to be safer compared to propofol-fentanyl for colonoscopy sedo-analgesia in COVID-19 patients.
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The abuse of opioids in the perioperative period has made the side effects of opioids increasingly prominent. So many anesthesiologists have proposed the concept of opioid-free anesthesia. Immunomodulation is an important field of modern medical research. With the introduction of the concept of enhanced recovery after surgery, the immunomodulatory effects of opioids have received increasing attention. Currently, the fentanyl family is commonly used opioid analgesics in clinical practice. This article reviews the research progress of the fentanyl family and immunomodulation, in order to provide guidance for clinicians to choose analgesic drugs.
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In recent years, the types and quantities of fentanyl analogs have increased rapidly. It has become a hotspot in the illicit drug control field of how to quickly identify novel fentanyl analogs and to shorten the blank regulatory period. At present, the identification methods of fentanyl analogs that have been developed mostly rely on reference materials to target fentanyl analogs or their metabolites with known chemical structures, but these methods face challenges when analyzing new compounds with unknown structures. In recent years, emerging machine learning technology can quickly and automatically extract valuable features from massive data, which provides inspiration for the non-targeted screening of fentanyl analogs. For example, the wide application of instruments like Raman spectroscopy, nuclear magnetic resonance spectroscopy, high resolution mass spectrometry, and other instruments can maximize the mining of the characteristic data related to fentanyl analogs in samples. Combining this data with an appropriate machine learning model, researchers may create a variety of high-performance non-targeted fentanyl identification methods. This paper reviews the recent research on the application of machine learning assisted non-targeted screening strategy for the identification of fentanyl analogs, and looks forward to the future development trend in this field.
Subject(s)
Fentanyl , Substance Abuse Detection/methods , Mass Spectrometry/methods , Illicit Drugs/analysis摘要
Objective:To evaluate the effect of gender on anesthetic potency of ciprofol for gastroscopy when combined with fentanyl.Methods:American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ patients, aged 18-50 yr, with body mass index of 18-25 kg/m 2, undergoing elective gastroscopy with intravenous anesthesia, were divided into 2 groups according to gender: male group (M group) and female group (F group). After fentanyl 1.5 μg/kg was intravenously injected, ciprofol was given by the Dixon′s up-and-down method, with the initial dose of 0.4 mg/kg followed by dose increment/decrement of 0.04 mg/kg. The ED 50 and 95% confidence interval of ciprofol for gastroscopy anesthesia were calculated by the probit regression analysis. Results:The ED 50 (95% confidence interval) of ciprofol for gastroscopy was 0.33 (0.32-0.34) mg/kg in F group and 0.27 (0.26-0.28) mg/kg in M patients when combined with fentanyl 1.5 μg/kg. There was no significant difference between the two groups ( P>0.05). Conclusions:There is no significant gender difference in the anesthetic potency of ciprofol for gastroscopy (ED 50: female 0.33 mg/kg, male 0.27 mg/kg) when combined with fentanyl (1.5 μg/kg).
摘要
Background: Usually for lower abdomen and lower limb short surgical procedures, spinal anaesthesia is a reliable and safe anaesthesia technique.2-chloroprocaine (2-CP) is an amino-ester local anaesthetic with a very short half-life. Adjuvants are required with short acting local anaesthetic for spinal anaesthesia to prolong analgesia. Aims and Objectives: The present study was conducted to analyse the effect of 2-CP alone and with fentanyl combination in spinal anaesthesia for short surgical procedures in terms of onset of block, adequacy of anaesthesia, analgesia and recovery. Materials and Methods: The study was conducted in our hospital in 60 patients undergoing lower abdomen and lower limb short surgical procedures under spinal anaesthesia with either 2-CP or 2-CP and fentanyl (group I or group II) after randomisation into two groups. Spinal anaesthesia characteristics of sensory and motor block, duration of analgesia were noted and appropriate statistical analysis was performed. Results: The onset of sensory and motor block was faster in group II[5.00 ± 3.19 vs 7.156 ± 3.38 min. (p= 0.0138) and 8.03 ± 5.65 vs 11.03 ± 3.97 min. (p= 0.021)] than in group I, and duration of effective analgesia was prolonged in group II (147.63 ± 40.71 vs 130.40 ± 50.85 min with p value of 0.0002)as compared to group I. Eleven patients in group I required analgesic supplementation in the intraoperative period. Conclusion: The patients undergoing short surgical procedures of lower abdomen and lower limb under spinal anaesthesia with short acting local anaesthetic 2-CP with fentanyl as an additive provides rapid onset of sensory and motor block and prolonged duration of analgesia.
摘要
Introduction: A lot of surgeries are now performed to reduce a number of physical ailments. Although these surgeries are done to reduce the sufferings these inevitably lead to a lot of pain for the patient. Material and Methods: Our study comprises of 60 patients who had undergone elective upper limb surgery in a tertiary care centre of central India. Patients of both genders, in age group 18-60 years with American Society of Anaesthesiology (ASA) grade I or II were included in our study and divided in two groups of 30 each. Results: Data was entered into MS-Excel sheet and analysed by SPSS version 20. Quantitative data was compared by using student t-test and qualitative data by using chi-square test and Fisher exact test, as applicable. P<0.05 was considered as statistically significant. Both the groups were similar in demographic and surgical characteristics. However, we found that the group given bupivacaine and fentanyl had longer duration of sensory and motor block and post-operative analgesia than ropivacaine and fentanyl group (p<0.001). Conclusion: Combination of bupivacaine with fentanyl provides longer duration of sensory block, motor block and postoperative analgesia without any major side effects than combination of ropivacaine with fentanyl with comparable haemodynamic in both groups.