Conscious Sedation In Patients Research Articles

Remifentanil Target-controlled Infusion Versus Standard of Care for Conscious Sedation During Ultrasound-guided Transbronchial Needle Aspiration and Biopsy: A Randomized, Prospective, Control Study.

Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a minimally invasive procedure that has become an important tool in the diagnosis and staging of mediastinal lymph node lesions in lung cancer. Adequate sedation is an important part of the procedure as it provides patient comfort and potentially increases diagnostic yield. The sedation modality varies among centers and includes moderate sedation/conscious sedation, deep sedation, and general anesthesia. The object of this study will be the evaluation of patient's comfort and level of satisfaction with the involved health care providers (bronchoscopist and anesthesiologist) of remifentanil administration in target-controlled infusion (TCI) for conscious sedation in patients undergoing EBUS‑TBNA, with a prospective randomized study design versus the of standard sedation protocol with midazolam and/or fentanest and/or propofol. This study was carried out at the "Campus Biomedico di Roma" University Hospital between September 2021 and November 2021, with a total number of 30 patients enrolled who met the eligibility criteria, randomly divided into 2 groups: group 1 "REMIFENTANIL TCI" (experimental group) where the patients performed the EBUS-TBNA procedure under conscious sedation with infusion of remifentanil TCI with a target between 3 ng/mL and 6ng/mL and group 2 "STANDARD" (control group) with patients undergoing conscious sedation with the association of midazolam and/or fentanest and/or propofol in refracted boluses based on clinical needs. Complications, safety, and level of satisfaction of the operator, the anesthesiologist, and the patient were evaluated. The results show that sedation with remifentanil in TCI can improve the comfort level of patients, reducing the risks associated with the procedure (lower frequency of oversedations and hypotension), allowing for greater intraprocedural safety. Furthermore, the level of satisfaction of the anesthesiologist and that of the operator appears to be significantly higher in the Remifentanil group. The execution of a mild to moderate sedation with Remifentanil in TCI in patients undergoing EBUS is safe, tolerated, and allows to obtain greater intraprocedural comfort. Further studies and larger and more representative samples are obviously needed to confirm and strengthen the validity of a remifentanil TCI-based sedation in endoscopic diagnostics.

Safety and efficacy of ultrasound-guided superior hypogastric plexus block combined with conscious sedation in ambulatory patients undergoing percutaneous microwave ablation of uterine myomas: Study protocol for a single-center, double-blinded, randomized controlled trial

BackgroundPain is a major challenge in performing ultrasound-guided percutaneous microwave ablation (PMWA) of uterine myomas. Inadequate analgesia by local anesthetics hinders the possibility of conducting PMWA of uterine myomas in the Ambulatory Surgery Center (ASC) of the Department of Ultrasound. ObjectiveThe superior hypogastric plexus (SHP) forms a suitable target for pain relief through the blockade, as it contains nociceptive afferent fibers from pelvic organs such as the uterus, rectum, and bladder. Superior hypogastric plexus block (SHPB) has demonstrated promise as an alternative treatment option for alleviating pelvic pain, reducing opioid consumption, and improving quality of life. This study aims to evaluate the efficacy of ultrasound-guided SHPB combined with conscious sedation as an alternative anesthesia option for ambulatory patients receiving ultrasound-guided PMWA of uterine myomas. Methods and analysisThis randomized controlled trial (RCT) will be carried out at the Department of Ultrasound, The First Affiliated Hospital of Xiamen University. Women scheduled for ultrasound-guided PMWA of uterine myomas will be eligible. 86 patients will be recruited and randomly assigned to either the intervention or control groups in a 1:1 ratio. The intervention group will undergo ultrasound-guided superior hypogastric plexus block (SHPB) combined with conscious sedation, while the control group will receive local anesthesia combined with conscious sedation. The primary outcome is the success rate of anesthesia, secondary outcomes include vasoactive drug consumption, acetaminophen consumption, sleep quality, sonographer satisfaction score, patient satisfaction score, the detained time in hospital, and adverse events. DiscussionsThis RCT represents the inaugural effort to specifically evaluate the safety and efficacy of ultrasound-guided SHPB combined with conscious sedation in patients undergoing ultrasound-guided PMWA of uterine myomas and will provide valuable evidence and insight into the analgesic management of this ambulatory surgery. Ethics and disseminationThis study has been approved by the Ethics Committee of the First Affiliated Hospital of Xiamen University (Scientific Research Ethics Review 2023, No. 139). The results will be submitted for publication in peer-reviewed journals.

Dexmedetomidine versus Fentanyl as Adjuvant to Propofol Total Intravenous Anesthesia during Endoscopic Retrograde Cholangial-Pancreatography Procedure

Abstract Background Various types of sedation and analgesia technique have been used during endoscopy procedures. Providing an adequate regimen of sedation/analgesia might be considered an art, influencing several aspects of endoscopic procedures: the quality of examination, the patient’s cooperation and the patient and physician’s satisfaction with sedation Objective To compare the effects of Dexmedetomidine/Propofol and Fentanyl/Propofol combination for conscious sedation in patients undergoing ERCP regarding hemodynamic changes, patients and endoscopists satisfaction. Patients and Methods Ninety four (94) ages 18-70 ASA ı-ıı were enrolled in this study. Patients were allocated randomly into two equal groups D/P and F/P groups. Patients received either Fentanyl 1 µg/kg or Dexmedetomidine 1 µg/kg for 10 min, followed by maintenance dose 0.2 µg to 0.5 µg/kg/min. combined with propofol 1 mg/kg IV and maintenance 3 mg/kg/h regimen. With requiring additional dose if sedation level did not reached. Conduct open airway technique was used while applying o through nasal cannula 3 L/min. (MAP, HR and SPO) were recorded before and after sedation procedures then every 10 min. till the end of procedure, recovery time, postoperative complications, patients and endoscopists were recorded. Results the intra procedure HR, and BP showed statistical significant differences between both groups throughout the procedure with lower value in group D/P (p = 0.042) while there were no statistical significance differences regarding MAP and SPO. During postoperative procedure BP and MAP was statistical significant lower in D/P group (p = 0.015). Post procedure recovery time was shorter in group D/P (p = 0.049), regarding PONV was higher in D/P compared to F/P (p = 0.03), both group were statistical significant satisfied. Conclusion In our study we concluded that Dexmedetomidine/ Propofol combination provided adequate sedation with hemodynamic and respiratory stability with accepted few side effects and a good satisfication scores for patients and endoscopists. It was a good competitive to standard sedative as Fentanyl/Propofol in moderate sedation during ERCP.

Conscious Sedation for Dental Treatments in Subjects with Intellectual Disability: A Systematic Review and Meta-Analysis.

This systematic review and meta-analysis was aimed to investigate the conscious sedation efficiency in patients with intellectual disability undergoing dental treatment (PROSPERO CRD42022344292). Four scientific databases were searched by ad-hoc prepared strings. The literature search yielded 731 papers: 426 were selected, 42 were obtained in full-text format, and 4 more were added after hand searching. Fourteen studies were finally included, 11 of which were included in the meta-analysis (random effect model). A high heterogeneity in the drugs used and route of administration was retrieved. Success rate, occurrence of side effects, and deep sedation occurrence were combined to give an overall efficiency of each drug. N2O/O2 reported the highest efficiency (effect size = 0.90; p < 0.01) and proved to be more efficient when used alone. Nine papers reported a success rate of sedation of 80% or more. The prevalence of side effects (6 studies) ranged from 3% to 40%. Enteral and parenteral benzodiazepines showed the same overall efficiency (effect size = 0.86). No meta-analysis has yet been conducted to define the most effective and safest way to achieve conscious sedation in patients with intellectual disability; nitrous oxide appears to be the best choice to perform conscious sedation in patients with intellectual disability undergoing dental treatment.

Initial Experience Assessing the Feasibility of Conscious Sedation in Patients Undergoing Transcatheter Pulmonic Valve Implantation

ABSTRACT Background: Transcatheter pulmonic valve implantation (TPVI) is a minimally invasive procedure that treats patients with dysfunction of the pulmonic valve or right-ventricular-to-pulmonary artery conduit. TPVI procedures have traditionally been performed under general anesthesia (GA), yet conscious sedation (CS) has emerged as an alternative to GA. This study assessed the feasibility of CS-TPVI compared to GA-TPVI. Methods: We performed a retrospective review of 19 consecutive patients undergoing TPVI with CS or GA. The primary endpoint was procedure success, defined as a residual gradient <20 mmHg and freedom from reoperation within 30 days. Secondary endpoints included the procedure step durations, 30-day readmission rate, composite of 90-day rehospitalization and mortality rates, procedural characteristics, and periprocedural complications. Results: Nineteen patients underwent TPVI (CS-TPVI = 8). The procedural success rate was not statistically different between cohorts; only one case in the GA-TPVI group had an elevated transvalvular gradient. The CS-TPVI 90-day composite of rehospitalization and mortality rates was not different from that of GA-TPVI. Median in-room procedure duration was less with CS (131.5 minutes, [90–173, IQR] versus 196 minutes [165–260, IQR], p = 0.007), fewer patients required vasopressors, and no patients converted from CS to GA. Contrast use, radiation exposure, length of stay, and periprocedural complications were not different between groups. Conclusions: This small, nonrandomized study reports no differences in clinical outcomes between CS-TPVI and GA-TPVI with shorter in-room duration and less vasopressor use in the CS-TPVI group. This study highlights the importance of a multidisciplinary approach in complex congenital heart disease patients and underscores the need for larger studies investigating CS-TPVI. Abbreviations: CHD: congenital heart disease; CS: conscious sedation; GA: general anesthesia; IQR: interquartile range; PA: pulmonary artery; RV: right ventricle; RVOT: right ventricular outflow tract; TAVI: transcatheter aortic valve implantation; TPVI: transcatheter pulmonic valve implantation

Comparative Study between Dexmedetomidine and Midazolam in Inducing Conscious Sedation in Patients Undergoing Cataract Surgery

Background: Cataract surgery are usually done in elderly patients. Dexmedetomidine is a potent non-opiod sedative and analgesic devoid of respiratory depression. Midazolam is the most commonly used sedative which is commonly associated with respiratory depression specially in elderly patients. Objectives: To compare the effects of intravenous dexmedetomidine and midazolam on the haemodynamic stability, sedation and intraocular pressure and to study the safety profile of the drug Methodology: After obtaining permission from institutional ethical committee and patient informed consent, study was conducted at BMCRI from November 2016 to May 2018 in ASA Grade 1 and 2 patients of 40 to 70 year age undergoing cataract surgery. Patients were randomly allocated to two Group D and M of 32 each. Group D received inj. dexmedetomidine 0.25mcg/kg, Group M received inj. midazolam 0.02mg/kg diluted to 10ml over 10 minutes as intravenous injection. Peribulbar block was given with 8-10ml of injection 2% lignocaine with adrenaline with hyaluronidase. Haemodynamic parameters like Heart Rate, Mean Arterial Pressure and SpO2, Intra Ocular Pressure in non-operating eye, Ramsay Sedation Score, Visual Analogue Score and Modified Aldrete Score were recorded. Results: We concluded that in our study demographic data were comparable. Patients of Dexmedetomidine group had reduction of IOP after drug injection (p=0.001) and at post bulbar block (p=0.002) which is statistically significant compared to Group M patients and also there was statistically significant difference in RSS Score between two groups. Conclusions: Dexmedetomidine provides same conscious sedation as Midazolam. Dexmedetomidine reduces intraocular pressure and maintains SpO2 when compared to Midazolam in cataract surgery.

“Comparison between Propofol and Dexmedetomidine for Conscious Sedation in Patients Undergoing Outpatient Colonoscopy”

“Comparison between Propofol and Dexmedetomidine for Conscious Sedation in Patients Undergoing Outpatient Colonoscopy”

Use of Diphenhydramine as Adjuvant to Conscious Sedation in Patients Undergoing Interventional Nephrology Procedures

Use of Diphenhydramine as Adjuvant to Conscious Sedation in Patients Undergoing Interventional Nephrology Procedures

Sociodemographic Status of Propofol and Dexmedetomidine as an Agent of Conscious Sedation in Patients Undergoing Tympanoplasty

Sociodemographic Status of Propofol and Dexmedetomidine as an Agent of Conscious Sedation in Patients Undergoing Tympanoplasty

Conscious sedation in patients with substance use disorders

Conscious sedation in patients with substance use disorders

Conscious sedation in patients with substance use disorders

Conscious sedation in patients with substance use disorders

Continuous intravenous versus intermittent bolus midazolam with remifentanil during arteriovenous fistula placement with monitored anesthesia care in chronic renal failure patients: a randomized controlled trial.

ABSTRACTBACKGROUND: There is limited data on the use of intravenous continuous infusion (CI) versus intravenous intermittent bolus (IB) doses of midazolam for conscious sedation in patients with chronic renal failure. Unexpected adverse events can occur in chronic renal failure patients undergoing short procedures.OBJECTIVE: Investigate and compare the sedoanalgesic and adverse effects of intravenous continuous infusion (CI) use of midazolam with intravenous intermittent bolus (IB) doses of midazolam while using intravenous remifentanil as a rescue medication, and assess patient and surgeon satisfaction.DESIGN: Prospective, randomized, single-blind controlled study.SETTINGS: Two tertiary care hospitals.PATIENTS AND METHODS: Study included patients aged 43-81 years with a diagnosis of chronic renal failure who were referred for an arteriovenous fistula procedure with modified anesthesia care between August 2012 and April 2016. The patients were randomized to intravenous CI or IB doses of midazolam. IB doses of remifentanil were used as a rescue medication.MAIN OUTCOME MEASURES: Primary outcomes were amounts of midazolam and remifentanil medications during the operation, the amount of remifentanil as a rescue medication, and the satisfaction of patient and surgeon.SAMPLE SIZE: 116 assessed for eligibility; 99 randomized to CI (n=50) or IB doses (n=49 of midazolam).RESULTS: The total dose of midazolam by CI was greater than with midazolam by IB (P=.002). The total dose of remifentanil was higher with IB doses of midazolam in comparison to CI of midazolam (P=.001). The groups were similar in sedation and pain control, duration of procedure, recovery time, patient satisfaction and adverse events; surgeon satisfaction was greater with CI versus IB (P=.035).CONCLUSION: Intravenous CI midazolam during MAC provides better surgeon satisfaction then IB midazolam and can be used safely for arteriovenous fistula procedures.LIMITATIONS: Two different surgeon groups.CONFLICT OF INTEREST: None.

Ketofol vs Dexamedetomidine Effect on Conscious Sedation for Patients with Chronic Nonsurgical Low Back Pain

Abstract Context Treatment of low back pain is challenging. A variety of therapeutic interventions is available, but no single modality appears to be superior, and evaluations vary depending on the cause of pain and on individual, social, and occupational factors. Scientific evidence supports the use of some nonsurgical treatment alternatives in patients with acute and chronic low back pain. Dexmedetomidine had been successfully used in conscious (moderate) sedation as a good competitive to the popular agent (midazolam). Also different concentrations of ketamine and propofol combinations (ketofol) have been used for procedural sedation and analgesia. Objective The aim of this study is to compare the effect of dexamedetomidine and ketofol on conscious sedation in patients undergoing non-surgical interventions for chronic low back pain regards the efficacy of sedation, hemodynamic stability, respiratory effects, speed of recovery, analgesic effects and incidence of complications. Methodology This study was conducted in Ain Shams University affiliated hospitals on 60 patients of both sexes between 30 and 50 years old, of ASA physical status I–II scheduled for nonsurgical intervention for chronic low back pain. In the current study, the patients were randomly divided into 2 equal groups of 30 patients each. Patients received either sedation with Ketofol (group K) or Dexmedetomidine (group D). Results As regards the demographic data (age, sex and body weight); there was no statistically significant variation between the two study groups. This provided a uniform platform to evenly compare the results obtained. Concerning the duration of the procedure, the time recorded for each patient showed statistically non-significant difference between the two groups. Regarding sedation of the patients during the procedure evaluated according to Ramsay sedation score, there was a highly significant difference between the two groups (p-value &amp;lt; 0.001), where the dexmedetomidine group needed more time (17.71 ± 2.86 min) to reach the targeted Ramsay sedation score (3-4) to commence the surgical procedure while the ketofol group needed less time (9.79 ± 1.87 min) to reach the same score. Conclusion Both drugs provided hemodynamic stability althrough the procedure although dexmedetomidine group showed lower heart rates and lower mean arterial blood pressures towards the end of the procedure which makes it difficult to be used in older population or those having low baseline heart rates. Both drugs proved to be safe concerning respiration, SPO2 and CO2 values, however dexmedetomidine showed higher respiratory rates during the procedure.

Predictors of Failed Conscious Sedation in Patients Undergoing an Outpatient Colonoscopy and Implications for the Adenoma Detection Rate

Guidelines to triage patients to conscious sedation (CS) or monitored anaesthesia care (MAC) for colonoscopy do not exist. We aimed to identify the CS failure rate, predictors of failure, and its impact on the adenoma detection rate (ADR). Strict (based on patient experience) and expanded (based on doses of sedative medications) definitions of CS failure were used. Patient and procedure-related variables were extracted. Multivariable logistic regression identified predictors for CS failure and the ADR. Among 766 patients, 29 (3.8%) and 175 (22.8%) patients failed CS by strict and expanded definitions, respectively. Female gender (OR 3.50; 95% CI: 1.37–8.94) and fellow involvement (OR 4.15; 95% CI: 1.79–9.58) were associated with failed CS by the strict definition. Younger age (OR 1.27, 95% CI: 1.07–1.49), outpatient opiate use (OR 1.71; 95% CI 1.03–2.84), use of an adjunct medication (OR 3.34; 95% CI: 1.94–5.73), and fellow involvement (OR 2.20; 95% CI: 1.31–3.71) were associated with failed CS by the expanded definition. Patients meeting strict failure criteria had a lower ADR (OR 0.30; 95% CI: 0.12–0.77). Several clinical factors may be useful for triaging to MAC. The ADR is lower in patients meeting strict criteria for failed CS.

Comparison of Effectiveness and Side Effects of Diazepam versus Midazolam Administration for Conscious Sedation in Patients Who Underwent Cataract Surgery

Background: The purpose of this study was to compare the effectiveness and side effects of diazepam and midazolam administration for conscious sedation in subjects who undergoing cataract surgery. Methods: A total of 79 patients undergoing cataract surgery under topical anesthesia with conscious sedation were prospectively reviewed. Our subjects were randomly divided to two groups. The first group comprised of 38 cases receiving 0.05 mg/kg diazepam slow intravenously (diazepam group) and the second group comprised of 41 cases receiving 0.01 mg/kg midazolam intravenously (midazolam group). Intraoperative variables such as systolic and diastolic arterial pressure, heart rate, respiratory rate and blood oxygen saturation were recorded immediately before sedation, 5, 10 and 15 minutes after diazepam or midazolam administration. All patients were contacted 24 hours after the operation for any early postoperative complications. Results: The variability of systolic and diastolic blood pressure at 5, 10 and 15 minutes after sedation were statistically significantly higher in midazolam group compared to diazepam group. Six patients developed episodes of apnea during operation, two patients in diazepam and four patients in midazolam group. The surgeons’ satisfaction was more in diazepam group but not statistically significant. Need for additional dose of benzodiazepine was more in the midazolam group. Drowsiness and functional impairment during 24 hours after surgery were not significantly different between the two groups. Conclusion: Diazepam produces better perioperative hemodynamic profile, level of sedation and surgeon’s satisfaction and less occurrence of apnea compared to midazolam group in patients who underwent cataract surgery.

Postoperative pain control after the use of dexmedetomidine and propofol to sedate patients undergoing ankle surgery under spinal anesthesia: a randomized controlled trial.

Background: Dexmedetomidine is widely used for conscious sedation in patients undergoing lower-extremity surgery under regional anesthesia. We evaluated the postoperative analgesic effects of intravenous dexmedetomidine given during ankle surgery under spinal anesthesia.Methods: Forty-three participants underwent repair of lateral angle ligaments under spinal anesthesia. For sedation during surgery, participants were allocated to a dexmedetomidine group (n=22) that received a loading dose of 1 mcg.kg−1 over 10 min, followed by a maintenance dose of 0.2–0.7 μg.kg−1.h−1; and a propofol group (n=21) that received an effective site concentration of 0.5–2.0 μg.mL−1 via target-controlled infusion. The primary outcome was the postoperative, cumulative, intravenous (IV) morphine equivalent dose delivered via IV patient-controlled anesthesia (PCA) and rescue analgesic consumption in the first 24 h after surgery. We recorded sensory and motor block durations.Results: The postoperative IV morphine equivalent dose was 14.5 mg (0.75–31.75 mg) in the dexmedetomidine group compared to 48.0 mg (31.5–92.5 mg) in the propofol group (median difference, 33.2 mg; 95% confidence interval, 21.0–54.8 mg; P<0.001). The time to the first complaint of surgical site pain was significantly prolonged in the dexmedetomidine group (P<0.001), but the duration of motor block was comparable between the two groups (P=0.55).Conclusion: IV dexmedetomidine given as a sedative during ankle surgery under spinal anesthesia reduced postoperative opioid consumption in the first 24 h. Thus, intraoperative dexmedetomidine is a versatile sedative adjunct.Level of evidence: Level I, prospective randomized trial.

Efficacy of Adding Low-Dose Ketamine to Dexmedetomidine Versus Low-Dose Ketamine and Propofol for Conscious Sedation in Patients Undergoing Awake Fiber-optic Intubation.

Background and Aims:Conscious sedation is the key for successful AFOI. This trial was conducted to compare the effectiveness of dexmedetomidine and low dose of ketamine against propofol and low dose ketamine.Materials and Methods:Sixty patients subjected for general anesthesia were invited to participate in the study and randomly allocated into two equal groups: D-K (n = 30) had been received a bolus dose of both ketamine 0.5mg /kg and dexmedetomidine 1ug/kg over 10 min. Then continuous infusion of ketamine 0.5mg /kg and dexmedetomidine 1ug/kg. The second group (P-K group) (n = 30): had been received a bolus dose of both ketamine 0.5mg/kg and propofol 1mg/kg over 10 min. Then continuous infusion of ketamine 0. 5mg/kg and propofol 1mg/kg.Results:The intubation time was statistically significant shorter within the D-K group (58.9 ± 6.1) versus P-K group (63.4 ± 5.3) with p-value 0.02. The shorter time needed to achieve the OAA/S score = 2 was in the D-K group (2.25 ± 0.75) versus (2.9 ± 0.79) in P-K group with (P-value 0.004). The intubation scores were insignificant different between both groups except vocal cord opening which was statistical better among D-K group with P-value 0.03. The significant hypotensive recorded data were among P-K group while the decreased heart rate were recorded in D-K group. Eighty percentages of patients had excellent score of satisfaction within the D-K gp against 47% among the patients within P-K gp with P-value 0.01.Conclusion:The concomitant administration of low dose of ketamine with dexmedetomidine had better intubation time and sedation scores with higher patient satisfaction scores than the combination of propofol and low dose of ketamine.

Comparison of quality of surgical field and hemodynamic changes with total intravenous anaesthesia and monitored anaesthesia care using local anaesthesia with conscious sedation in patients undergoing elective endoscopic sinus surgery for fungal granuloma

Comparison of quality of surgical field and hemodynamic changes with total intravenous anaesthesia and monitored anaesthesia care using local anaesthesia with conscious sedation in patients undergoing elective endoscopic sinus surgery for fungal granuloma

Safety of Conscious Sedation in Patients Undergoing Endoscopic Retrograde Cholangio Pancreatography.

To assess the safety of conscious sedation in patients undergoing endoscopic retrograde cholangio pancreaticography (ERCP). An observational study. Department of Gastroenterology, Liaquat National Hospital, Karachi, from April 2010 to April 2015. All patients underwent ERCP procedure under midazolam and/or nalbuphine were included. Safety was assessed by monitoring the hemodynamics and complications during procedure till discharge from hospital. SPSS version 20 was used for descriptive analysis. A total of 550 procedures were enrolled for the study. The mean age of the patients was 50.85 ±15.66 years. There were 197 (35.8%) males. Out of 550 procedures, only 2 (0.4%) reported complications. The study reports a success rate of 531 (96.5%) procedures who underwent ERCP with conscious sedation. Only 19 (3.5%) cases could not be completed successfully under conscious sedation and were converted to general aneasthesia. The present study shows that ERCP technique is safe under conscious sedation as it delivers balanced tranquillity.

P02-1 - Conscious sedation versus general anaesthesia for patients undergoing TAVI

The use of conscious sedation in patients undergoing transcatheter aortic valve implantation (TAVI) has been associated with reduction in periprocedural inotrope requirement, procedure duration, and length of hospital stay when compared with general anaesthesia. We evaluated data on patients undergoing TAVI under sedation versus general anaesthesia at a tertiary hospital.