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PubMed2001

Intravenous ketamine plus midazolam is superior to intranasal midazolam for emergency paediatric procedural sedation.

OBJECTIVES: This study compared intranasal midazolam (INM) with a combination of intravenous ketamine and intravenous midazolam (IVKM) for sedation of children requiring minor procedures in the emergency department. METHOD: A single blinded randomised clinical trial was conducted in the emergency department of a major urban paediatric hospital. Subjects requiring sedation for minor procedures were randomised to receive either INM (0.4 mg/kg) or intravenous ketamine (1 mg/kg) plus intravenous midazolam (0.1 mg/kg). Physiological variables and two independent measures of sedation (Sedation Score and Visual Analogue Sedation Scale) were recorded before sedation and at regular intervals during the procedure and recovery period. Times to adequate level of sedation and to discharge were compared. RESULTS: Fifty three patients were enrolled over a 10 month period. Sedation was sufficient to complete the procedures in all children receiving IVKM and in 24 of the 26 receiving INM. Onset of sedation was an average of 5.3 minutes quicker with IVKM than with INM (95%CI 3.2, 7.4 minutes, p<0.001). Children given INM were discharged an average of 19 minutes earlier than those given IVKM (95%CI 4, 33 minutes, p=0.02). Mean Sedation Scores and Visual Analogue Sedation Scale scores for the 30 minutes after drug administration were significantly better in children given IVKM compared with INM (2.4 and 1.8 versus 3.5 and 3.8, respectively). Both doctors and parents were more satisfied with sedation by intravenous ketamine and midazolam. CONCLUSIONS: Intravenous ketamine plus midazolam used in an appropriate setting by experienced personnel provides an excellent means of achieving sedation suitable for most non-painful minor procedures for children in the emergency department. This combination is superior to INM in terms of speed of onset and consistency of effect. INM delivered via aerosol spray has a more variable effect but may still be adequate for the completion of many of these procedures.

Administration, Intranasal↗
PubMed2006

The utility of supplemental oxygen during emergency department procedural sedation and analgesia with midazolam and fentanyl: a randomized, controlled trial.

STUDY OBJECTIVE: To determine whether supplemental oxygen reduces the incidence of hypoxia by 20% in study patients receiving midazolam and fentanyl for emergency department procedural sedation and analgesia. METHODS: Patients were randomized to receive either supplemental oxygen or compressed air by nasal cannula at 2 L per minute. Physicians were blinded to the gas used and end-tidal carbon dioxide (ETCO2) data. Respiratory depression was defined a priori as oxygen saturation less than 90%, ETCO2 level greater than 50 mm Hg, an absolute change from baseline of 10 mm Hg, or loss of the ETCO2 waveform. RESULTS: Of the 80 patients analyzed, 44 received supplemental oxygen and 36 received compressed air. Twenty supplemental oxygen patients and 19 compressed air patients met at least 1 criterion for respiratory depression. Six supplemental oxygen patients and 5 compressed air patients experienced hypoxia (P=.97; effect size 0%; 95% confidence interval -15% to +15%). Fourteen patients in each group met ETCO2 criteria for respiratory depression but were not hypoxic. Physicians identified respiratory depression in 8 of 11 patients who became hypoxic and 0 of 28 patients who met ETCO2 criteria for respiratory depression but who did not become hypoxic. There were no adverse events. CONCLUSION: Supplemental oxygen did not reduce (or trend toward reducing) the incidence of hypoxia in patients moderately sedated with midazolam and fentanyl. However, our lower-than-expected rate of hypoxia limits the power of this comparison. Blinded capnography frequently identified respiratory depression undetected by the treating physicians.

Adolescent↗
PubMedDate not supplied

Intraindividual propofol dosage variability in children undergoing repetitive procedural sedations.

The authors prospectively assessed intraindividual variability in propofol dosage for induction of sedation in repetitive procedures in children with malignancies. A total of 80 procedures were performed in 24 children. Primary outcome measure was the intraindividual propofol dose required to achieve adequate sedation. Intraindividual variability in propofol dosage required to achieve adequate sedation was 0.0-2.2 mg.kg-1. Twenty-five percent of the patients had a dose range of 0.0-0.5 mg x kg-1; 37.5%, >0.5-1.0 mg x kg-1; and 37.5% >1.0-2.2 mg x kg-1. Due to remarkable intraindividual differences, propofol dosage should be titrated toward the desired level of sedation.

Adolescent↗
PubMed2005

Prospective evaluation of dexmedetomidine for noninvasive procedural sedation in children.

OBJECTIVE: Children often require sedation for lengthy noninvasive procedures. Conventional agents such as chloral hydrate, benzodiazepines, or barbiturates have been associated with sedation failure, respiratory depression, and paradoxic agitation. Dexmedetomidine is a newer alpha(2)-adrenergic receptor agonist with sedative properties and minimal respiratory depression. We hypothesized that it would be an effective agent for these procedures. DESIGN: Prospective case series. SETTING: Tertiary care children's hospital. PATIENTS: Children undergoing noninvasive procedures. INTERVENTIONS: Children were sedated with dexmedetomidine given as a bolus of 0.5-1.0 microg/kg over 5-10 mins followed by an infusion of 0.5-1.0 microg/kg/hr. Vital signs, sedative effectiveness, recovery patterns, and complications were prospectively recorded. MEASUREMENTS AND MAIN RESULTS: Forty-eight patients, aged 6.9 +/- 3.7 yrs, were sedated. Fifteen received dexmedetomidine after failing sedation with chloral hydrate and/or midazolam. Sedation was induced with 0.92 +/- 0.36 microg/kg over 10.3 +/- 4.7 mins and maintained with an infusion of 0.69 +/- 0.32 microg/kg/hr. All procedures were completed. Heart rate, blood pressure, and respiratory rate decreased (p < .0001) but remained within normal limits for age. End-tidal CO(2) exceeded 50 mm Hg in seven of 404 measurements (1.7%). Mean recovery time was 84 +/- 42 mins and was significantly longer in the rescue (117 +/- 41 mins) vs. primary (69 +/- 34 mins) group (p < .0001). No patient developed agitation during recovery. CONCLUSIONS: Dexmedetomidine provided effective sedation in children undergoing noninvasive procedures and represents an alternative sedative choice for this population.

Adolescent↗
PubMed2005

Bispectral index as a guide for titration of propofol during procedural sedation among children.

OBJECTIVE: To determine whether the bispectral index (BIS) monitor could be used to guide physicians in titrating propofol to an effective safe level of deep sedation for children undergoing painful medical procedures. DESIGN: Multiphase clinical trial. SETTING: Outpatient treatment center of a university children's hospital. PATIENTS: Pediatric outpatients undergoing painful medical procedures. INTERVENTIONS: Patients were sedated with propofol for the procedures. Patients were monitored with a BIS monitor, and the BIS score was correlated with the patient's clinical level of sedation. The BIS score was then used as a guide to titrate propofol in the last phase of the study. MEASUREMENTS AND MAIN RESULTS: The study consisted of 3 phases. In a chart review of data for 154 children who underwent 212 procedures, propofol was found to be safe and effective, with consistent dosing among the intensivists administering the medication. The children received a mean bolus dose of propofol of 1.56 mg/kg, with a mean total dose of propofol of 0.33 mg/kg per minute for the duration of the procedure. In the second phase, 21 patients ranging in age from 27 weeks to 18 years, with normal neurologic function, were sedated with propofol. An observer who was blinded to the BIS scores recorded clinical levels of sedation and reactivity (with a modified Ramsay scale and reactivity score) every 1 to 3 minutes. Another observer recorded the BIS scores at the same times. A total of 275 data points were collected and evaluated. All data points from the times at which patients were considered to be sedated adequately were used to construct a normal distribution of BIS scores. The mean BIS score was 62. This distribution was used to predict that a maximal BIS score of 47 was needed to ensure adequate sedation for 90% of the population. In the third phase of the study, an algorithm was devised to determine the target BIS score necessary for adequate sedation of 95% of the patients. We chose an initial BIS score of 50 (at which 85% of the patients in phase 2 were sedated) because of the possibility of data from phase 2 being skewed toward oversedation. Propofol was administered by an intensivist in an attempt to maintain the target BIS score. A blinded observer noted the patient's clinical level of sedation. In this group, there were 2 failures, ie, patients were clinically uncomfortable despite a BIS score of < or =50, representing only 90% success. Therefore, with the algorithm, propofol was titrated to sedate the next patients to a BIS score of 45. These patients required a mean bolus dose of 1.47 mg/kg and a mean total dose of 0.51 mg/kg per minute to maintain a BIS score of 45. They awakened in 12.75 minutes. All patients were sedated adequately, all procedures were successful, and no patients experienced complications from the sedation. To eliminate variability in the way propofol was dosed, the next 10 patients were given propofol according to a standardized protocol. These 10 children received an initial bolus of 1 mg/kg, with incremental bolus doses of 0.5 mg/kg per dose (maximum: 20 mg) to achieve and to maintain a BIS score of 45. With this protocol, all patients were sedated adequately and none experienced complications from the sedation. The patients required a mean bolus dose of 2.23 mg/kg and a mean dose of 0.52 mg/kg per minute to maintain a BIS score of 45. The mean time until awakening was 14.9 minutes. Regarding the total dose over time and the time until awakening, there was no statistical significance between this group and the group sedated to a BIS score of 45 without the dosing protocol. CONCLUSION: The BIS monitor can be a useful monitoring guide for the titration of propofol by physicians who are competent in airway and hemodynamic management, to achieve deep sedation for children undergoing painful procedures.

Adolescent↗
PubMed2006

A review of the use of propofol for procedural sedation in the emergency department.

Sedation for short but potentially painful procedures is often undertaken in the emergency department. The ideal sedative regimen should provide analgesia and anxiolysis with minimal side effects and cardiorespiratory depression and rapid recovery post-procedure. Propofol has found increasing popularity with anaesthetists for sedation in the operating theatre. This is a review of the current literature looking at the use of propofol for procedural sedation in the emergency department. A comprehensive literature search of Medline from 1966 to week 4 of 2005, Embase from 1980 to week 10 of 2005, and the Cochrane Library was carried out using the OVID interface. Eight articles were selected for review. The evidence suggests that propofol is both effective and safe to use in the emergency department. However, several of the papers reviewed used deep levels of sedation that are not recommended in the UK by non-anaesthetists.

Emergency Service, Hospital↗
PubMed1992

[The use of different conscious sedation procedures in ambulatory dental surgery].

Conditions and selections of patients undergoing oral surgery under intravenous conscious sedation are reviewed. The practicability of several medicaments and combinations are discussed. Intravenous conscious sedation in combination with local anesthesia is an alternative during unpleasant surgical and dental procedures, and in several cases, can replace general anesthesia. A sufficient monitoring as well as a good trained staff makes the methods safe and allows to reduce complications.

Ambulatory Surgical Procedures↗
PubMed2006

The practice of pediatric procedural sedation and analgesia in the emergency department.

The treatment of acute pain and anxiety in children undergoing therapeutic and diagnostic procedures in the emergency department has improved dramatically over the last few years. The availability of noninvasive monitoring devices and the use of short-acting sedative and analgesic medications enable physicians to conduct safe and effective sedation and analgesia treatment. In today's practice of pediatric emergency medicine, sedation and analgesia has been considered as the standard of care for procedural pain. The following article describes the basic principles of pediatric procedural sedation and analgesia in the emergency department.

Analgesics↗
PubMed2004

Sleep deprivation for pediatric sedated procedures: not worth the effort.

OBJECTIVE: Sleep deprivation is commonly used to enhance the effectiveness of pediatric sedation and to decrease sedation failures. We reviewed our sedation database to evaluate the efficacy of sleep deprivation. METHODS: The entire pediatric sedation unit database (n = 5640) was reviewed retrospectively. Patients without complete data sets were excluded. The remaining patients were separated into 2 groups: 3272 patients who underwent noninvasive procedures and 1210 who underwent invasive procedures. A subgroup of noninvasive procedure patients <2 years old (n = 1398) was also analyzed. The sedation failure rate (%) and nursing care hours for both sleep-deprived and non-sleep-deprived patients were analyzed. RESULTS: In the noninvasive procedure group, the sedation failure rate was 5.7% for the sleep-deprived patients and 5.6% for the non-sleep-deprived patients, whereas the sedation failure rate for children <2 years old was 4.2% for sleep-deprived patients and 4.7% for non-sleep-deprived patients. The sedation failure rate in the invasive procedure group was 7.5% for sleep-deprived patients and 7.2% for non-sleep-deprived patients. Nursing care hours in the noninvasive procedure group were significantly longer for the sleep-deprived patients (4.5 +/- 1.6 hours) versus the non-sleep-deprived patients (3.8 +/- 1.6 hours). This finding was true also for the subgroup of children <2 years old (sleep-deprived patients: 4.2 +/- 1.4 hours; non-sleep-deprived patients: 3.5 +/- 1.4 hours). No difference was noted in nursing care hours for the invasive procedure group. CONCLUSIONS: Sleep deprivation had no effect in reducing the pediatric sedation failure rate. The patients having noninvasive procedures who were sleep deprived required significantly more nursing care hours than their non-sleep-deprived counterparts. Routine use of sleep deprivation for pediatric sedation should be critically reevaluated.

Adolescent↗