Midazolam Premedication Research Articles

미다졸람 경구 전투약을 이용한 발달장애 환아의 전신마취하 우식치료 증례보고

저자는 본 증례를 통하여 발달장애 환자의 치과치료 시 다음과 같은 지견을 얻었다. 1. 발달장애 환자의 경우 불량한 구강위생 등으로 인하여 치과적 치료가 필요한 경우가 많다. 2. 발달장애 환자의 경우 비약물적 행동조절만으로 치과적 치료를 위한 충분한 협조도를 얻기가 어렵다. 3. 발달장애 환자에 있어서 midazolam 구강 전투약을 이용한 전신마취 하 치과치료가 매우 유용하게 적용될 수 있다. 4. 숙련된 의료진의 철저한 감시하에 정맥주사용 midazolam 제재를 설탕시럽에 혼합하여 투약한다면 전투약을 통해 기대하는 효과를 얻을 수 있다. Developmental disorders are a group of psychiatric conditions originating in childhood that involve serious impairments in different areas. These disorders comprise language disorders, learning disorders, motor disorders and autism spectrum disorders. Midazolam is a short-acting drug in the benzodiazepine class developed by Hoffmann-La Roche in the 1970s. The drug is used for treatment of acute seizures, moderate to severe insomnia, and for inducing sedation and amnesia before medical procedures. It possesses profoundly potent anxiolytic, amnestic, hypnotic, anticonvulsant, skeletal muscle relaxant, and sedative properties. The anterograde amnesia property of midazolam is useful for premedication before surgery to inhibit unpleasant memories. This article presents a case report including caries treatment of a 8-year-old male patient with developmental disorders using oral midazolam premedication as an alternative method of behavior management prior to general anesthesia.

Efficacy of midazolam premedication for prevention of emergence agitation after sevoflurane anesthesia in children undergoing minor surgery

Objective To evaluate the efficacy of midazolam premedication for prevention of emergence agitation (EA) after sevoflurane anesthesia in children undergoing minor surgery.Methods One hundred and twenty ASA physical status Ⅰ or Ⅱ paediatric patients,aged 3-9 yr,weighing 15-35 kg,scheduled for elective tonsillectomy and adenoidectomy,were randomly divided into 4 groups (n =30 each):control group (group C) and midazolam 0.25,0.50 and 0.75 mg/kg groups (groups M1-3).The 10 ml mixture of midazolam 0.25,0.50 and 0.75 mg/kg and 10％ glucose was taken orally at 30 min before anesthesia in M1-3 groups,respectively,while 10 ml of 10％ glucose was taken orally in group C.Anesthesia was induced with inhalation of sevoflurane and maintained with iv infusion of remifentanil and inhalation of sevoflurane.EA was assessed using the Pediatric Anesthesia Emergence Delirium (PAED) scale.Results Compared with group C,the PAED scores and incidence of EA were significantly decreased in groups M2 and M3 (P ＜ 0.05),and no significant change was found in group M1 (P ＞ 0.05).Compared with group M1,the PAED scores and incidence of EA were significantly decreased in groups M2 and M3 (P ＜ 0.05).There was no significant difference in the PAED scores and incidence of EA between groups M3 and M2 (P ＞ 0.05).Conclusion Premedication with oral midazolam can prevent EA following sevoflurane anesthesia in children undergoing minor surgery and the optimum dose is 0.50 mg/kg. Key words: Dose-response relationship,drug; Premedication; Midazolam; Mood disorders; Anesthetics, inhalation; Child

Comparison between dexmedetomidine and midazolam premedication in pediatric patients undergoing ophthalmic day-care surgeries

Midazolam is the most commonly used premedication in children. It has been shown to be more effective than parental presence or placebo in reducing anxiety and improving compliance at induction of anesthesia. Clonidine, an a2 agonist, has been suggested as an alternative. Dexmedetomidine is a more a2 selective drug with more favorable pharmacokinetic properties than clonidine.Aims:To compare i.v. Dexmedetomidine and Midazolam as premedication in pediatric patients.Settings and Design:Open label single blind study.Material and Methods:60 patients were randomly allocated to group D(n=30) and group M(n=30) and given Inj Dexmedetomidine 0.4 μg/kg diluted in 10 ml slowly i.v. and Inj Midazolam 0.05mg/kg i.v. accordingly. Level of sedation, parent separation, response to induction, blood pressure, pulse, oxygen saturation, post operative agitation and shivering was noted.Statistical Analysis Used:Unpaired student's t-test and chi square test used in this study. P value <0.05 was considered significant.Results:There were significant differences in parental separation acceptance,Response to induction and wake-up behavior score. When compared with group M, patients in groupD were significantly more sedated % minutes after premedication (P<0.001). Post operative agitation and shivering was low in group D in comparision with group M. Though blood pressure and pulse were on lower side in group D than in group M, oxyden saturation remained same in both the groups having no statistical significance.Conclusions:Dexmedetomidine is superior than Midazolam as premedication in pediatric patients with more intense sedation, excellent parent separation, favourable induction conditions, lower incidence of postoperative agitation and shivering along with hemodynamic stability and no respiratory depression.

Administration of midazolam as sedative premedication for paediatric patients

The paper aims to discuss effective presurgical modalities for reducing preanesthetic and preoperative anxiety in children. It reviews the existing research on psychological interventions and sedative premedication for presurgical anxiety management. Psychological and behavioural pre­ operative preparation of children, through presurgical preparation programs, combined with parental presence during induction of anaesthesia are regarded as alternatives to sedative premedication. A combination of these preparation strategies with midazolam premedication is presented as an effective way of helping children cope with preanesthetic and pre­ operative anxiety. It is highlighted that the use of low dose midazolam is sufficiently safe and beneficial if alternatives to sedative premedication prove ineffective, especially when dealing with increased feelings of anxiety immediately before anesthesia and the surgery.

Flexible bronchoscopy may decrease respiratory muscle strength: premedicational midazolam in focus

BackgroundFlexible bronchoscopy (FB) is a procedure accepted to be safe in general, with low complication rates reported. On the other hand, it is known that patients with pre-existing respiratory failure have developed hypoventilation following FB. In this study the effects of FB on respiratory muscle strength were investigated by measuring maximum respiratory pressures.MethodsOne hundred and forty patients, aged between 25 and 90 years, who had undergone diagnostic bronchoscopy between February 2012 and May 2012, were recruited to the study. Pre- and post-procedure maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) were measured. A correlation between the MIP and MEP changes and patient characteristics and FB variables were investigated.ResultsSignificant decreases in both MIP and MEP values were observed following FB (p < 0.001 for both). Decreases were attributed to the midazolam used for sedation. Significant decreases in respiratory muscle strengths were observed especially in the high-dose midazolam group, compared to both low-dose and non-midazolam groups.ConclusionsIt was determined that respiratory muscle weakness may arise post-procedure in patients who have undergone FB, and this is constitutively related to midazolam premedication. Respiratory muscle weakness might play a role in potential hypoventilation in critical patients who undergo FB.

Flexible bronchoscopy may decrease respiratory muscle strength: premedicational midazolam in focus

Background: Flexible bronchoscopy (FB) is a procedure accepted to be safe in general, with low complication rates reported. On the other hand, it is known that patients with pre-existing respiratory failure have developed hypoventilation following FB. In this study the effects of FB on respiratory muscle strength were investigated by measuring maximum respiratory pressures. Methods: One hundred and forty patients, aged between 25 and 90 years, who had undergone diagnostic bronchoscopy between February 2012 and May 2012, were recruited to the study. Pre- and post-procedure maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) were measured. A correlation between the MIP and MEP changes and patient characteristics and FB variables were investigated. Results: Significant decreases in both MIP and MEP values were observed following FB (p &lt; 0.001 for both). Decreases were attributed to the midazolam used for sedation. Significant decreases in respiratory muscle strengths were observed especially in the high-dose midazolam group, compared to both low-dose and non-midazolam groups. Conclusions: It was determined that respiratory muscle weakness may arise post-procedure in patients who have undergone FB, and this is constitutively related to midazolam premedication. Respiratory muscle weakness might play a role in potential hypoventilation in critical patients who undergo FB.

Buccal midazolam premedication for surgical patients with needle-phobia

Buccal midazolam premedication for surgical patients with needle-phobia

Comparison of intravenous infusion of dexmedetomidine and midazolam for premedication in children

Objective To compare the efficacy of intravenous infusion of dexmedetomidine and midazolam for premedication in children.Methods Ninety-two ASA Ⅰ or Ⅱ children (46 cases aged 1-3 yr and 46 cases aged 4-6 yr) scheduled for elective general or urologic surgeries,were enrolled in this study.The children were randomly divided into 2 groups (n =46 each):midazolam group (group M) and dexmedetomidine group (group D).The children accompanied by their parents were admitted to the anesthesia preparation room at about 20 min before induction of anesthesia,and midazolam 0.1 mg/kg or dexmedetomidine 1 μg/kg was infused intravenously over 10 min.Anesthesia was induced with proporol-rocuroniume-remifentanil,and maintained with sevoflurane-remifentanil-rocuroniume.Modified Yale Preoperative Anxiety Scale (mYPAS) score,sedation score,HR,mean arterial pressure (MAP),respiratory rate (RR) and SpO2 were recorded before premedication (T1),before separation from their parents (T2) and when entering the operating room (T3).The incidence of sleep (a sedation score of 4) was recorded at T2,3.The end-tidal concentration of sevoflurane,infusion rate of remifentanil,laryngeal air way removal time,emergence time,duration of stay at the recovery room,incidence of delirium during recovery period,the percentage of patients requiring rescue analgesic,and adverse effects were also retorded.Results Compared to that at T1,the mYPAS score was significantly decreased at T2,3,and the sedation score was significantly increased at T2,3 in both groups ( P ＜ 0.05),HR at T2 and MAP at T2,3 were significantly decreased in group D,and HR at T3 was significantly increased in group M ( P ＜ 0.05 ).Compared to group M,the sedation scores and the incidence of sleep were significantly increased at T2,3,and the HR was significantly decreased at T2 in group D ( P ＜ 0.05).There was no significant difference in the mYPAS score,RR,MAP,SpO2,end-tidal concentration of sevoflurane,infusion rate of remifentanil,laryngeal air way removal time,emergence time,duration of stay at the recovery room,incidence of delirium during recovery period,the percentage of patients requiting rescue analgesic,and incidence of adverse effects between D and M groups ( P ＞ 0.05).Conclusion The sedative efficacy of iv dexmedetomidine is superior to that of iv midazolam when infused for premedication in children,but it exerts much influence on hemodynamics,and the changes in hemodynamics should be noted. Key words: Dexmedetomidine; Midazolam; Child; Premedication

Ketamine With and Without Midazolam for Gastrointestinal Endoscopies in Children

Numerous publications on sedation of and anaesthesia for diagnostic procedures in children prove that no ideal scheme is available. Therefore, we decided to study the protocol with midazolam and ketamine used by nonanaesthetists at our institution. The study aimed to establish the lowest effective starting dose of ketamine and to estimate a difference in the frequency of adverse reactions with or without the use of midazolam as premedication, with special stress on emergence reactions. During 1 year we prospectively randomised children scheduled for gastrointestinal endoscopies to a first group with and to a second group without midazolam premedication. The starting ketamine dose was increased until the appropriate dissociative state was reached. Physiological functions were closely monitored and adverse reactions noted. The median age of 201 analysed patients (111 girls, 90 boys) was 8.2 years. The median starting dose of ketamine was 0.97 mg/kg (the group with midazolam premedication) and 0.99 mg/kg TT (without midazolam premedication). Laryngospasm was observed in 6 patients without statistical difference between the 2 groups. All of the adverse reactions were short lasting; they resolved by symptomatic treatment without complications. Emergence reactions during the observation period at the hospital occurred more often in the group sedated with ketamine without midazolam premedication (P=0.02). : The sedation protocol with ketamine is safe and efficient. The starting dose of ketamine should be at least 1 mg/kg. There is an advantage to the use of midazolam as premedication before ketamine in paediatric patients because the frequency of emergence reactions in hospital was reduced compared with sole ketamine use.

Endoscopic management of pancreatic fluid collections without EUS in our practice. Results of cystenterostomies in 38 patients

Introduction: Pancreatic fluid collections are consequences of acute or chronic pancreatitis (CP), that can lead to local and/or systemic complications, even death. Complicating, or large pseudocysts (PC) and PCs in CP need intervention to resolve. Endoscopic cystenterostomy (EC) can be guided by the buldging of the cyst into the lumen, or by using EUS in the absence of it. Patients, methods: In the last 3 years we have performed EC in 38 patients (pts), 24 men and 14 women, (average age: 55.2 ys). The origin of pancreatic fluid collections was acute necrosis in 24 pts and CP in 14 cases. The fluid collections were existing between 10 days to 2 years. The diameter of them ranged from 2×3cm to 26×11cm. The main indications for intervention were pain, fever, jaundice, weightloss. We used midazolam for premedication, the most common dose was 50mg. For transmural puncture we used cystotome followed by guidewire insertion into the cyst, dilation of the tract in some cases, than insertion of pigtail stent(s) and nasocystic stent, if needed. At transpapillary method we performed pancreas sphincterotomy followed by insertion of endopancreatic/nasopancreatic drain. Results: We inserted one transmural stent in 22 pts, two stents in 5 pts, three stents in 3 pts, transpapillary stent in 3 pts with 0/1/2 transmural stents. We inserted transgastric stents in 21 pts, transduodenal in 7 pts, both in 4 pts. We used nasocystic drain in 16 pts. We put a transpapillary stent/nasopancreatic drain in 6 pts in one case together with a transduodenal stent. We extracted the stents after 52 days on average. One chronic cyst proved to be malignant and a patient had surgical resection 2 months later. Three other pts also went to surgery. The first because of perforation that was successfully managed surgically, leaving endoscopic stents in place, another patient because of bleeding from the unsuccessful EC, also with uneventful recovery. The third patient with acute fluid collection and unsuccessful transpapillary drainage also went for surgery because of deterioration of underlying pancreatitis, that finally proved to be fatal. Other complications were successfully managed endoscopically. Only 1 relapse was observed during follow up. Summary: EC guided by buldging proved to be a safe and effective method to treat pancreatic fluid collections in our practice.

Atomised intranasal midazolam spray as premedication in pediatric patients: comparison between two doses of 0.2 and 0.3 mg/kg

Midazolam premedication administered by the intranasal route is noninvasive with good bioavailability. Atomised intranasal midazolam spray ensures accurate drug dosage and better patient acceptability, with rapid onset of action and virtually complete absorption. Sixty pediatric patients scheduled for elective surgeries were administered atomised intranasal midazolam. Two doses of midazolam, of 0.2 and 0.3 mg/kg, were compared. Children were observed for achieving satisfactory sedation and separation scores, and face mask acceptance. At 10 and 20 min of nasal administration, 70 and 76% of the children, respectively, in the 0.3 mg/kg dose group, while 40 and 63% of the children, respectively, in the 0.2 mg/kg group were adequately sedated. Similarly, at 10 and 20 min after administration, 66.6 and 73.3% of children, respectively, in the 0.3 mg/kg group, and 30 and 60% in the 0.2 mg/kg group were easily separated from their parents. With regard to face mask acceptance, 33.3% of patients in the 0.3 mg/kg group and 16.6% in the 0.2 mg/kg group accepted the mask easily. Atomised midazolam at 0.3 mg/kg is safe, and achieves faster sedation and better separation scores as compared to 0.2 mg/kg.

Oral Melatonin, Dexmedetomidine, and Midazolam for Prevention of Postoperative Agitation in Children

Survey of Anesthesiology: February 2012 - Volume 56 - Issue 1 - p 31-32 doi: 10.1097/01.SA.0000410707.23984.00

Spectral entropy as an objective measure of sedation state in midazolam-premedicated patients

Context:Objective assessment of sedation depth is a valuable target. Spectral entropy is an anesthetic depth monitor based on the analysis of the electroencephalogram signal.Aims:To evaluate the performance of spectral entropy as an objective measure of sedation state in midazolam-premedicated patients and to correlate it with a clinically assessed sedation score.Settings and Design:This prospective double-blind placebo-controlled study was performed in King Fahd Hospital of the university.Methods:Eighty adult ASA I–II patients were randomly assigned into 4 groups. Patients were premedicated using 0.02, 0.04, or 0.06 mg/kg midazolam or saline intramuscularly. The effect of these doses on the Observer's Assessment of Alertness and Sedation (OAA/S) scale, hemodynamic variables, response entropy (RE), and state entropy (SE), was evaluated at 10, 20, and 30 min after premedication.Statistical analysis:Spearman Rank-order correlation analysis to examine the relation between OAA/S and entropy. The ability of spectral entropy to predict the depth of sedation was evaluated using Smith prediction probability.Results:Midazolam doses ≥0.04 mg/kg produced significant decreases in RE, SE, and OAA/S scores. There was a strong correlation between midazolam dose and OAA/S scale, RE, and SE since Spearman Rank R values were 0.792, 0.822, and 0.745, respectively (P<0.001). In addition, RE and SE were strong predictors of OAA/S level during midazolam sedation with no significant difference in prediction between the 2 entropy components.Conclusions:Spectral entropy is a reliable measure for the sedative premedication. It may be used to objectively assess the adequacy of midazolam premedication and to determine the dose requirement.

Midazolam and Ketamine Intramuscular Premedication in Attention Deficit Hyperactivity Disorder Patient with Poor Cooperability

Midazolam and Ketamine Intramuscular Premedication in Attention Deficit Hyperactivity Disorder Patient with Poor Cooperability

Premedication with midazolam nasal spray: an alternative to oral midazolam in children.

Background:Midazolam is a water soluble benzodiazepine which is frequently administered by intravenous and oral routes in our institution. Its nasal spray has become recently available.Objectives:To compare the efficacy of midazolam administered orally and by intranasal spray, with the specific objective of assessing their efficacy in terms of acceptability to the patients, whether they achieve a satisfactory sedation score, and the overall ease of inducing general anesthesia.Patients and Methods:Sixty healthy children of ASA grade I or II, aged 2–6 years who were undergoing elective surgery of approximately 30 minutes duration, were assigned to receive midazolam premedication in a randomized controlled trial. They were divided into 2 groups of 30 patients each. Group I: 30 patients received midazolam orally (parenteral solution mixed in honey). Group II: 30 patients received a commercially available midazolam nasal spray.Results:The study shows that children better accepted the drug when administered orally than when administered intranasally, although satisfactory sedation scores at 10 and 20 minutes were better in the nasal spray group than in the oral group [i.e., 6 (20%) vs. 0 (0%) at 10 min and 16 (53.3%) vs. 13 (43.3%), respectively]. Satisfactory ease of induction scores [24 (80%) vs. 13 (43.3%)], recovery times [11.63 ± 4.19 minutes vs. 25.20 ± 9.36 minutes], and post-anesthesia recovery scores were better in the nasal spray group (group II) than in the oral group (group I).Conclusions:On the basis of our study, we conclude that nasal midazolam spray is acceptable and is a good alternative to oral midazolam as premedication in the pediatric population.

Midazolam in the Fiber-optic Bronchoscopy Premedication: Effects on Patient-Related and Procedure-Related Outcomes

PURPOSE: The role of Midazolam (a short-acting benzodiazepine), in the flexible bronchoscopy premedication is debated. Indeed, there is evidence that sedative medications increase the tolerability of the procedure; does not change diagnostic yield of the procedure and is associated with increased side effects especially in the elderly. Aim: to evaluate whether Midazolam premedication increases the patient-reported tolerability and the physician-reported feasibility of the fiberoptic bronchoscopy.

Postoperative agitation in preschool children following emergence from sevoflurane or halothane anesthesia: A randomized study on the forestalling effect of midazolam premedication versus parental presence at induction of anesthesia

Objective The effect of midazolam premedication on forestalling postoperative agitation in children is not yet concluded. The purpose of this study was to compare the effects of midazolam premedication and parental presence during anesthetic induction on the incidence of postoperative agitation in pediatric patients. Methods One hundred sixty-seven children between 2 years and 7 years of age, undergoing anesthesia for outpatient surgery, were enrolled and randomly divided into four groups: sevoflurane anesthesia with parental presence without premedication, sevoflurane anesthesia with oral midazolam premedication, halothane anesthesia with parental presence without premeditation, and halothane anesthesia with oral midazolam premedication. The children randomized to the premedication groups took oral midazolam 0.5 mg/kg 20–30 minutes before anesthetic induction. For patients in the groups without premedication, one of the parents was present throughout the induction of anesthesia. One recovery room nurse blinded to the group assignment observed the patients and recorded the agitation scores all through their stay in the postanesthesia care unit. Results Postoperative agitation was significantly less in patients who received halothane anesthesia with oral midazolam premedication ( p < 0.002). Conclusion Based on our data, the presence of a parent at induction of sevoflurance anesthesia was as effective as midazolam premedication in decreasing the incidence of postoperative agitation. Midazolam premedication, however, decreased postoperative agitation when halothane was used as the anesthetic agent.

Effects of hydroxyzine–midazolam premedication on sevoflurane-induced paediatric emergence agitation

Anaesthesia with sevoflurane leads to a high prevalence of emergence agitation in paediatric patients. This study investigates the effects of combining hydroxyzine and midazolam on sevoflurane-induced emergence agitation in paediatric patients undergoing infraumbilical surgery with a caudal block. Eighty-four children 1-7 years of age undergoing general anaesthesia with sevoflurane and caudal block were assigned to two groups. Children in group M (n = 42) were premedicated with 0.5 mg kg oral midazolam and children in group MH (n = 42) were premedicated with 0.5 mg kg oral midazolam and 1 mg kg hydroxyzine given 30 min before anaesthesia induction. A caudal epidural block was performed following anaesthesia induction. Induction quality, parental separation scores and emergence agitation were evaluated. Emergence agitation was evaluated with the PAED score (Paediatric Anesthesia Emergence Delirium) every 5 min during the first 30 min after admission to recovery room. Induction quality and parental separation were assessed with 4-point scores. Postoperative pain was evaluated with the 10-point Children's and Infants' Postoperative Pain Scale. Median parental separation (3 vs. 2; P = 0.01), induction quality (2 vs. 2; P = 0.03) and sedation scores (3 vs. 2; P = 0.003) were significantly better in the MH group compared to the M group. Median PAED score of group M (15) was higher than that of group MH (11; P < 0.001) and the number of children with PAED scores more than 16 was also higher in group M (n = 16) compared to group MH (n = 2; P < 0.001). None of the children had a pain score more than 3 throughout the study period. The incidence of sevoflurane-induced emergence agitation was significantly lower in children premedicated with a midazolam and hydroxyzine combination compared to those premedicated with midazolam only. Furthermore, the midazolam and hydroxyzine combination provided better premedication quality than midazolam alone.

Perioperative effects of oral midazolam premedication in children undergoing skin laser treatment: a double-blinded randomized placebo-controlled trial

To investigate and compare the efficacy of oral midazolam with two different dosages in orange juice on perioperative hemodynamics and behavioral changes in children who underwent skin laser treatment in an academic educational Hospital. Ninety children, candidates for skin laser treatment were randomly assigned to 1 of 3 groups of 30 each: the placebo group received 0.1 ml/kg orange flavored juice, group 2 and 3 receiving 0.5 and 1 mg/kg of injectable midazolam mixed with an equal volume of orange juice, respectively. The main outcome measures included the mask acceptance, patients' behavioral scales and postoperative events. There were no significant differences in heart rate, respiratory rate, and systolic blood pressure among the three groups. However, arterial oxygen saturation was significantly reduced in those given 1 mg.kg(-1) midazolam. The median scores of anxiety, separation from parent, preparing an intravenous line, acceptance of the oxygen mask, good sedation, crying reduction and consciousness level were better in midazolam group. Postoperative agitation and re-crying were also more frequent in placebo receivers. Those given 1 mg.kg(-1) midazolam were significantly more optimal for sedation, crying, consciousness, preparing an intravenous line, and postoperative re-crying compared with 0.5 mg.kg(-1) midazolam receivers. As a preanaesthetic medication, the 1 mg.kg(-1) dose of orally given midazolam especially in a volume of orange juice and can optimize the children's behavior during skin laser treatment with no serious adverse effects, enhancing their parents' satisfactions about the sedative protocol.

Allaying Anxiety in Children

Allaying Anxiety in Children