Consent and anaesthetic risk

Comparison of Gastric Residual Volume After Ingestion of A Carbohydrate Drink and Water in Healthy Volunteers with Obesity: A Randomized Crossover Study

INTRODUCTION

Preoperative carbohydrate intake is essential to enhance postoperative recovery. However, its safety for individuals with obesity remains unclear. This study investigated the safety of preoperative carbohydrate consumption compared to water intake in obese populations through gastric volume assessment.

METHODS

A prospective randomized crossover study enrolled 30 healthy volunteers aged 18-65 years with a body mass index ≥ 30 kg/m2, following a minimum 6-h fast. The participants received either 400 ml of a carbohydrate drink (group C) or water (group W). Gastric ultrasonography, blood glucose level, hunger, and thirst assessments were conducted at baseline (T) and various time points (T2 to T6). The protocol was repeated with reverse interventions at least 1 week later.

RESULTS

Group C had significantly higher gastric volume at T3, T4, and T5 compared to group W, with a prolonged time to empty the gastric antrum (94.4 ± 28.5 vs. 61.0 ± 33.5 min, 95% CI 33.41 [17.06,24.69]). However, glucose levels, degrees of hunger, and thirst showed no significant differences between the groups.

CONCLUSION

Administering 400 ml of preoperative carbohydrates to healthy obese individuals 2 h preoperatively is safe and comparable to water intake. These findings support the integration of carbohydrate loading into perioperative care for obese individuals, consistent with the enhanced recovery after surgery protocols. Further research is warranted to refine preoperative fasting protocols and improve surgical outcomes in this population.

Functional recovery of wrist surgery with regional versus general anesthesia: a prospective observational study

PURPOSE

Regional anesthesia may favour postoperative rehabilitation by inhibiting peripheral sensitization and secondary hyperalgesia. The literature on this subject is limited. In the present FUNCTION study, we sought to compare the functional recovery post orthopedic wrist surgery with regional versus general anesthesia.

METHODS

We conducted a single-centre prospective observational cohort study in adult patients with a distal radial fracture. Functional recovery was assessed with validated psychometrics questionnaires (Quick Disabilities of Arm, Shoulder and Hand [QuickDASH] and Patient-Rated Wrist Evaluation [PRWE]), range of motion, and grip strength. We used a linear mixed regression model to assess the impact of the anesthesia technique on functional recovery. Postoperative pain and patient satisfaction were evaluated using a visual analog scale.

RESULTS

We recruited 76 patients. At 12 weeks post surgery, there was no difference between the type of anesthesia and functional recovery with the QuickDASH (higher scores worse; regional anesthesia [RA], 22.7 vs general anesthesia [GA], 19.3; adjusted mean difference [aMD], -0.3; 95% confidence interval [CI], -9.6 to 9.0; P = 0.9) and PRWE (higher scores worse; RA group, 21.0 vs GA group, 20.5; aMD, -3.3; 95% CI, -12.1 to 5.6; P = 0.93) questionnaires. Range of motion, satisfaction, and postoperative pain were similar between groups. Right-hand grip strength was higher in the GA group.

CONCLUSION

Regional anesthesia was not associated with improved functional recovery compared with general anesthesia. The dominance of the operated limb was a confusion factor in all evaluation modalities. Further research taking into account the dominance of the hand is necessary to establish the effects of regional anesthesia on functional recovery.

STUDY REGISTRATION

ClinicalTrials.gov (NCT04541745); registered 9 September 2020.

Should We Fix the Fibula in Tibial Plafond Fractures? A Meta-analysis Reviewing the Evidence Base for Fibula Open Reduction and Internal Fixation in Tibial Plafond Fractures

Open reduction and internal fixation are the standard of care to stabilize tibial plafond fractures. However, it remains uncertain as to whether fixation of the fibula affects the outcome. This study aimed to review the evidence base for comparable outcomes in tibial plafond fractures when undergoing open reduction and internal fixation of ipsilateral fibula fractures compared with open reduction and internal fixation of the tibia alone. A systematic review and meta-analysis of the literature was completed; 4 studies were included for analysis. This study demonstrated no statistically significant differences in the incidence of nonunion (p = .784) or mal-union (p = .416). There was a greater rate of removal of metalwork in the fibula operative group compared to the tibia alone group (p < .001). The current evidence demonstrates that open reduction and internal fixation of ipsilateral fibula fractures in tibial plafond fractures is not necessarily routinely indicated for all fractures.

Functional recovery with peripheral nerve block versus general anesthesia for upper limb surgery: a systematic review

BACKGROUND

Peripheral nerve block is a common anesthetic technique used during orthopedic upper limb surgery. Injection of local anesthetics around the target nerve inhibits the action of voltage-dependent sodium channels, inhibiting neurotransmission of pain impulses and providing motor immobility. Compared to general anesthesia, it could improve functional recovery by inhibiting nociceptive impulses and inflammation, thus reducing postoperative pain and immobilization and improving postoperative rehabilitation. This systematic review evaluates the impact of peripheral nerve block versus general anesthesia on postoperative functional recovery following orthopedic upper limb surgery.

METHODS

We searched CENTRAL, MEDLINE, CINHAL, EMBASE, and Scopus trial databases from inception until September 2021 for studies comparing peripheral nerve block to general anesthesia. We collected data on functional recovery, range of motion, patient satisfaction, quality of life, and return to work. We pooled studies using a random-effects model and summarized the quality of evidence with the GRADE approach.

RESULTS

We assessed 373 citations and 19 full-text articles for eligibility, and included six studies. Six studies reported on functional recovery, but failed to detect a significant superiority of peripheral nerve block over general anesthesia (3 RCT studies, N = 160; SMD -0.15; CI at 95% -0.60-0.3; I2 = 45%; p = 0.07; low quality of evidence and 3 observational studies, N = 377; SMD -0.35; CI at 95% -0.71-0.01; I2 = 64%; p = 0.06; very low quality of evidence).

CONCLUSIONS

Current literature is limited and fails to identify the benefit of peripheral nerve block on functional recovery. More studies are needed to assess the impact on long-term recovery. Considering the potential impact on clinical practice and training, a prospective study on functional recovery is ongoing (NCT04541745).

TRIAL REGISTRATION

PROSPERO ID CRD42018116298. Registered on December 4, 2018.

High-Flow Nasal Cannula for Apneic Oxygenation in Obese Patients for Elective Surgery: A Systematic Review and Meta-Analysis

BACKGROUND

Obese patients desaturate rapidly during the apneic period after induction of anesthesia for elective surgery. Administration of oxygen using high-flow nasal cannulae (HFNCs) may prevent desaturation in nonobese patients compared to facemask (FM) preoxygenation. The aim of this meta-analysis was to compare the effectiveness of HFNC to FM preoxygenation techniques in reducing preintubation desaturation in obese patients undergoing elective surgery.

METHODS

This study protocol was registered on PROSPERO (CRD42022309391). Adult studies that compared HFNC and FM preoxygenation in obese patients requiring general anesthesia for elective surgery were included. The primary outcome was desaturation resulting in oxygen saturation of <92% from induction of anesthesia until intubation. Secondary outcomes included the lowest arterial oxygen content before intubation expressed in mm Hg, safe apnea time expressed in seconds, the lowest oxygen saturation before intubation expressed as a percentage, patient-reported discomfort, the need for rescue ventilation, and the incidence of aspiration of gastric contents during intubation. Risk of bias was assessed using the Cochrane Collaboration tool. Certainty was assessed following the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach.

RESULTS

Six studies including 351 participants were eligible for analysis. There was no difference in odds of oxygen desaturation <92% between HFNC and FM (odds ratio [OR], 0.49; 95% confidence interval [CI], 0.15-1.63; P = .24). The HFNC group had a significantly longer safe apnea time (mean difference [MD], -124.20 with 95% CI, -200.47 to -47.93; P = .001). There was no difference between HFNC and FM in the lowest arterial oxygen content (MD, -23.90; 95% CI, -88.64 to 40.85; P = .47) and the lowest peripheral oxygenation saturation (MD, -0.47 with 95% CI, -5.07 to 4.12; P = .84). HFNC had a lower odd of discomfort than FM (OR, 0.13; 95% CI, 0.03-0.52; P = .004). There was no difference in the odds of aspiration of gastric contents between HFNC and FM (OR, 0.33; 95% CI, 0.01-8.21; P = .50). The risk of bias for our primary and secondary outcomes was low. The GRADE assessment for our primary outcome indicated a low level of certainty. For secondary outcomes, the GRADE assessment indicated a very low certainty for all outcomes except for patient discomfort, which was indicated as a moderate level of certainty.

CONCLUSIONS

There may be no difference between HFNC and FM preoxygenation in preventing oxygen desaturation <92% or the lowest oxygen saturation before intubation. Preparation remains important to prevent and manage desaturation during induction of obese patients.

The Anesthetic Techniques for Earthquake Victims in Indonesia

Introduction

In Lombok, three-large magnitude earthquakes occurred in July 2018 and caused major losses: 564 victims died, 1684 were injured, 445,343 people became refugees, and 215,628 houses were damaged. It damaged 408 health facilities, consisting of 89 public health centers, 13 hospitals, 174 auxiliary public health centers, 132 village health posts.

Aim

The purpose of this study is to describe the anesthetic techniques that were used to treat earthquake victims.

Methods

This study was a descriptive cross-sectional study that was conducted by collecting total sampling from all earthquake victims treated in the emergency room (ER) of the regional public hospital (RSUD NTB) on August 6th and 7th, 2018, and all victims who underwent surgery during August 5th–25th, 2018. The data that were collected were surgery type, anesthetic techniques, and anesthesia drugs that were used.

Results

The results show that the highest number of patients were treated in the ER during the first seven days after the earthquake and that this number then decreased over several weeks. The majority of patients treated were trauma patients who needed orthopedic surgery. General anesthesia was more widely used than regional anesthesia, but the difference was not significant. The most commonly used regional anesthetic was lidocaine hyperbaric 75–100 mg and clonidine 30–50 mcg combination. Regional anesthesia techniques have better results in cases of lower limb injury, but it is difficult to be applied in earthquake victims who present with complex injuries and limited resources.

Simple and Efficient Pressure Ulcer Reconstruction via Primary Closure Combined with Closed-Incision Negative Pressure Wound Therapy (CiNPWT)—Experience of a Single Surgeon

Background: In this study, we aimed to analyze the clinical efficacy of closed-incision negative pressure wound therapy (CiNPWT) when combined with primary closure (PC) in a patient with pressure ulcers, based on one single surgeon’s experience at our medical center. Methods: We retrospectively reviewed the data of patients with stage III or IV pressure ulcers who underwent reconstruction surgery. Patient characteristics, including age, sex, cause and location of defect, comorbidities, lesion size, wound reconstruction methods, operation time, debridement times, application of CiNPWT to reconstructed wounds, duration of hospital stay, and wound complications were analyzed. Results: Operation time (38.16 ± 14.02 vs. 84.73 ± 48.55 min) and duration of hospitalization (36.78 ± 26.92 vs. 56.70 ± 58.43 days) were shorter in the PC + CiNPWT group than in the traditional group. The frequency of debridement (2.13 ± 0.98 vs. 2.76 ± 2.20 times) was also lower in the PC + CiNPWT group than in the traditional group. The average reconstructed wound size did not significantly differ between the groups (63.47 ± 42.70 vs. 62.85 ± 49.94 cm²), and there were no significant differences in wound healing (81.25% vs. 75.38%), minor complications (18.75% vs. 21.54%), major complications (0% vs. 3.85%), or mortality (6.25% vs. 10.00%) between the groups. Conclusions: Our findings indicate that PC combined with CiNPWT represents an alternative reconstruction option for patients with pressure ulcers, especially in those for whom prolonged anesthesia is unsuitable.

Qualitative and quantitative gastric ultrasound assessment in highly skilled regional anesthesiologists

BACKGROUND

Pulmonary aspiration is a major complication in anesthesia, and various studies have shown that gastric sonography can reliably provide valuable information relative to both the qualitative and quantitative aspects of gastric content. This study aimed to determine the accuracy of ultrasound assessment of gastric content compared between two novice anesthesiologist gastric sonographers.

METHODS

This prospective cohort study of two anesthesiologists learning to perform qualitative and quantitative ultrasound assessment of gastric content on healthy volunteers was conducted at Siriraj Hospital (Bangkok, Thailand). This trial was registered with ClinicalTrials.gov (reg. no. NCT04760106).

RESULTS

Of the 50 enrolled participants, three were excluded due to study protocol violation. Each anesthesiologist performed a qualitative assessment on 47 participants for an overall total of 94 scans. There were 15 males and 32 females (age 42 ± 11.7 years, weight 61.2 ± 13.1 kg, height 160.7 ± 7.3 cm, and BMI 23.6 ± 4.3 kg/m²). The overall success rate for all gastric content categories was approximately 96%. From antral cross-sectional area measurement, as the ingested volume increased, there was a tendency toward increased deviation from the actual ingested volume. Interrater agreement between anesthesiologists was analyzed using intraclass correlation coefficients (ICCs). A larger fluid volume was found to be associated with a lower level of agreement between the two anesthesiologists. The ICCs were 0.706 (95% CI: -0.125 to 0.931), 0.669 (95% CI: -0.254 to 0.920), 0.362 (95% CI: -0.498 to 0.807) for the 100 ml, 200 ml, and 300 ml fluid volumes, respectively. The mean duration to perform an ultrasound examination for each gastric content category and for the entire examination did not differ significantly between anesthesiologists (p > 0.05).

CONCLUSION

Our results indicate that qualitative ultrasound assessment of gastric content is highly accurate and can be easily learned. In contrast, quantification of gastric volume by novice gastric sonographers is more complex and requires more training.

TRIAL REGISTRATION

ClinicalTrials.gov no. NCT04760106 Date registered on Feb 11, 2021. Prospectively registered.

The oral health status and treatment needs of children with fetal alcohol spectrum disorder

OBJECTIVE

To investigate the oral health status and treatment needs of children with fetal alcohol spectrum disorder (FASD).

METHODS

In this retrospective study, the records of children between the ages of 6 and 14 who attended the College of Dentistry, University of Saskatchewan between 2016 and 2019 were reviewed. Demographic and clinical data was collected and compared for children who were identified as having FASD and a healthy control group.

RESULTS

From our total sample of 252 dental records, 68 children were identified with FASD. When compared to controls, children with FASD were significantly older at their first dental visit, and more dependent on public dental insurance. Children with FASD also had a significantly higher caries experience (97% vs 64.7%) and severity (DMFT/dmft score = 7.18 ± 1.79 vs 2.93 ± 0.98). Additionally, the results of our logistic regression model indicate that children with FASD were 4.71 times more likely (OR 4.71, 95% CI 1.58 -14.03) to be referred for treatment under general anesthesia (GA) when all other factors were controlled.

CONCLUSIONS

Children with FASD may be at a higher risk for poor oral health outcomes and have more extensive treatment needs. Our results indicate that they may also be at a higher risk for treatment under GA.

CLINICAL RELEVANCE

Oral healthcare providers need to be award of the unique needs of children with FASD to better prevent and manage their oral disease.

Are We Meeting the Current Standards of Consent for Anesthesia? An International Survey of Clinical Practice

Background

International application of existing guidelines and recommendations on anesthesia-specific informed consent is limited by differences in healthcare and legal systems. Understanding national and regional variations is necessary to determine future guidelines.

Material/Methods

Anonymous paper surveys on their practices regarding anesthesia-specific patient informed consent were sent to anesthesiologists in Estonia, Latvia, and Lithuania.

Results

A total of 233 responses were received, representing 36%, 26%, and 24% of the practicing anesthesiologists in Lithuania, Latvia, and Estonia, respectively. Although 85% of responders in Lithuania reported using separate forms to secure patient informed consent for anesthesia, 54.5% of responders in Estonia and 50% in Latvia reported using joint forms to secure patient informed consent for surgery and anesthesia. Incident rates were understated by 14.2% of responders and overstated by 66.4% (P<0.001), with the latter frequently quoting incident rates that are several to tens of times higher than those published internationally. Physicians obtaining consent in the outpatient setting were more satisfied with the process than those obtaining consent on the day of surgery, with 62.5% and 42.6%, respectively, agreeing that the informed consent forms provided a satisfactory description of complications (P=0.03). Patients were significantly less likely to read consent information when signing forms on the day of surgery than at earlier times (8.5% vs. 67.5%, P<0.001). Only 46.2% of respondents felt legally protected by the current consent process.

Conclusions

Anesthesia-specific informed patient consent practices differ significantly in the 3 Baltic states, with these practices often falling short of legal requirements. Efforts should be made to improving information accuracy, patient autonomy, and compliance with existing legal standards.

Image-guided core needle biopsy in the diagnosis of malignant lymphoma: comparison with surgical excision biopsy

PURPOSE

This study aimed to compare the efficacy and safety of image-guided core needle biopsy (CNB) with those of surgical excision biopsy (SEB) for the diagnosis of lymphoma, and to clarify the indication of CNB in clinical practice.

METHOD

This retrospective study included 263 image-guided CNB cases and 108 SEB cases that were performed at our institution between January 2014 and December 2018. The rate of patients with performance status of grade 1-4 was higher in the CNB group than in the SEB group (43.7% vs. 24.1%, P <  0.01). Waiting time to biopsy and diagnosis was shorter for CNB group than for SEB group (4 days vs. 7 days, 13 days vs. 15 days, P <  0.01). The rate of biopsy at the deep sites was higher in the CNB group than in the SEB group (53.2% vs. 8.3%, P <  0.01). Successful biopsy and complication rates were compared between the 2 groups.

RESULTS

There were no significant differences between the CNB and SEB groups in successful biopsy rates (89.0% vs. 93.5%, P =  0.25). The grade 3 complication rate was significantly lower for CNB group than for SEB group (0% vs. 4.6%, P <  0.01), although there was no significant difference in overall complication rates (4.9% vs. 6.5%, respectively, P =  0.61).

CONCLUSIONS

CNB showed high diagnostic yield comparable to SEB for suspected lymphoma. CNB was especially recommended to the cases with low-PS, lesions in the deep sites, and requiring early pathological diagnosis.

Mortality and Morbidity in Office-Based General Anesthesia for Dentistry in Ontario

Our objective was to estimate the prevalence of mortality and serious morbidity for office-based deep sedation and general anesthesia (DS/GA) for dentistry in Ontario from 1996 to 2015. Data were collected retrospectively in 2 phases. Phase I involved the review of incidents, and phase II involved a survey of DS/GA providers. In phase I, cases involving serious injury or death for dentistry under DS/GA, sourced from the Office of the Chief Coroner of Ontario and from the Royal College of Dental Surgeons of Ontario (RCDSO), were reviewed. Phase II involved a survey of all RCDSO-registered providers of DS/GA in which they were asked to estimate the number of DS/GAs administered in 2015 and the number of years in practice since 1996. Clinician data were pooled to establish an overall number of DS/GAs administered in dental offices in Ontario from 1996 to 2015. Prevalence was calculated using phase I (numerator) and phase II (denominator) findings. The estimated prevalence of mortality in the 20-year period from 1996 to 2015 was 3 deaths in 3,742,068 cases, with an adjusted mortality rate of 0.8 deaths per 1 million cases. The estimated prevalence of serious morbidity was 1 injury in 3,742,068 cases, which adjusts to a serious morbidity rate of 0.25 per 1 million cases. The mortality rate found in this study was slightly lower than those published by earlier studies conducted in Ontario. The risk of serious morbidity was found to be low and similar to other studies investigating morbidity in office-based dental anesthesia.

Gentle facemask ventilation during induction of anesthesia

BACKGROUND

To determine the level of inspiratory pressure minimizing the risk of gastric insufflation while providing adequate pulmonary ventilation.

METHODS

In this prospective, randomized, double-blind study, patients were allocated to one of the two groups (P10, P15) defined by the inspiratory pressure applied during controlled-pressure ventilation: 10 and 15 cm H₂O. Anesthesia was induced using propofol and sufentanil; no neuromuscular-blocking agent was administered. Once loss of eyelash reflex occurred, facemask ventilation was started for a 2-min period. The cross-sectional antral area was measured using ultrasonography before and after facemask ventilation. Respiratory parameters were recorded.

RESULTS

Forty patients were analyzed. Mean tidal volume was about 7 ml/kg in group P10, and was >11 ml/kg in group P15 in the same period. As indicated by ultrasonography test, the antral area in P15 group was markedly incresed compared with P10 group.

CONCLUSION

Inspiratory pressure of 10 cm H₂O allowed for reduced occurrence of gastric insufflation with proper lung ventilation during induction of anesthesia with sufentanil and propofol in nonparalyzed and nonobese patients.

What to do when complications occur

Adverse events and complications, even if minor, can result in considerable negative effects on patients, including loss of life. They can also have an impact on the healthcare workers involved. Offering an apology to a patient who has suffered a complication is necessary, and is not an admission of fault. In England and Wales, there are also statutory obligations of candour in cases of more severe notifiable events. Local and national systems exist for incident reporting, with a strong emphasis on learning from events and sharing of best practice. Complaints may arise from poor management of a patient's complications, and in situations where there is a clear breach of a professional duty that has resulted in patient harm, negligence may be deemed to have occurred. National Health Service Resolution focuses on learning from events to help reduce the growth in litigation and emphasises that discussions should be timely, include appropriate explanation and information, and provide ongoing support and, if necessary, continuity of care.

Comparison of the Effects of Thoracic Epidural Anesthesia with General Anesthesia on Hemodynamic Changes and its Complications in Patients Undergoing Laparoscopic Cholecystectomy

Background:

Epidural anesthesia (EA) today has been used extensively in surgical procedures and the management of pain associated with midwifery and chronic pain. This type of anesthesia can be done in different technical, physiological, and pharmacological ways. The aim of this study was to compare the effects of thoracic EA with general anesthesia (GA) on hemodynamic changes and its complications in patients underwent laparoscopic colonoscopy.

Materials and Methods:

This clinical trial study was conducted on 80 patients undergoing laparoscopic cholecystectomy with EA or GA based on inclusion and exclusion criteria. The patients were randomly divided into two groups of 40 and changes in blood pressure, systolic blood pressure (SBP) and diastolic blood pressure (DBP), heart rate (HR), and arterial blood oxygen saturation were measured. The incidence of nausea, vomiting, chills, and itching in the two groups was recorded. The analysis was performed descriptively and also using t-test and Chi-square tests.

Results:

The results showed that the mean of SBP and DBP, HR, and arterial blood oxygen saturation and the incidence of nausea and vomiting was statistically significant (P < 0.05) between the two groups at 4, 6, and 12 h after anesthesia and it was higher in a group of GA. There was no significant difference in shivering and itching between the two groups (P > 0.05).

Conclusion:

The results of this study indicated that thoracic EA in patients with laparoscopic cholecystectomy has significant effects on factors such as SBP and DBP and arterial blood oxygen saturation. Furthermore, EA has fewer complications than GA, and it is the preferable approach.

Anaesthetic Mortality Rates in Western Australia 1980–2002

The Western Australian Anaesthetic Mortality Committee has collected data since 1980. During this time, reporting of anaesthesia mortality has been mandatory in Western Australia, confidentiality and legal protection have been ensured, consistent definitions and classifications have been used, and reasonable estimates have been available for the number of surgical procedures performed. The data indicate that there was a decrease in anaesthesia-related mortality in the mid 1980s. Since then the rates have been relatively stable, in relation to both population and number of surgical procedures performed. At present, the rates are extremely low (<1:50,000 surgical procedures per annum), and similar to rates reported from other Australian states. While these figures are encouraging, their main function is to serve as the baseline for further improvements.

Subdural Spinal Haematoma after Epidural Anaesthesia in a Patient with Spinal Canal Stenosis

A 60-year-old male with a past history of T12 fracture had epidural analgesia for a radical prostatectomy. It was unknown prior to epidural insertion that the patient had a canal stenosis at T12 from the previous injury. The patient developed severe bilateral buttock pain after epidural catheter removal. Magnetic resonance imaging demonstrated a spinal subdural haematoma from T10 to L2 with mild cord compression. The patient made a successful recovery with conservative management. Neuraxial blockade should be approached with caution in patients with previous back injury, and only after a thorough assessment has been obtained to exclude spinal canal stenosis.

Printed anesthetic-risk information and perioperative anxiety: a multi-center study

Background: Currently, there is a considerable variation concerning the provision of preanesthetic-risk information, especially potential detrimental adverse outcomes.

Objective: Determine the effects of printed anesthetic-risk information before surgery including patients’ anxiety, refusal of surgery, knowledge perception of adverse events and factors affecting anxiety.

Methods: Patients in a university hospital, a tertiary care hospital, a secondary care hospital, and a neurological institute in Thailand, undergoing low-to-moderate risk surgery were randomly allocated to control group (C) and study group (S), where group C received printed general information in anesthesia, and group S received printed incidences of five anesthetic adverse events as sore throat, nausea/vomiting, tooth loss, not waking up after surgery, cardiac arrest. Spielberger State-Trait Anxiety Inventory Scale (STAIS, STAIT) for anxiety and Visual Analog Scale (VAS) for knowledge perception were recorded before and after information, and after surgery. Numbers of patients who refused surgery and needed anesthetic-risk information in the next surgery were also recorded. STAIS >45 were considered “high anxiety”.

Results: Eight-hundred and twenty-four patients were analyzed (group C: 414, group S: 410). There was no difference in age, sex, ASA physical status, salary, education level, habitat, anesthetic experience and operative risk between groups. STAIS and STAIT, proportion of patients with high anxiety, proportion of patients who refused surgery were not different between groups. Patients in control group needed anesthetic-risk information in the next surgery more than study group (p <0.001). VAS for knowledge about five adverse events in study group were significantly higher than control group (p <0.001). Risk factors by the multivariate analysis included patients with high baseline trait anxiety and low income of less than 10,000 Baht/month.

Conclusion: Printed anesthetic-risk information did not increase anxiety, but increased knowledge perception of the patients.

Defining reasonable patient standard and preference for shared decision making among patients undergoing anaesthesia in Singapore

BACKGROUND

A cross-sectional study to ascertain what the Singapore population would regard as material risk in the anaesthesia consent-taking process and identify demographic factors that predict patient preferences in medical decision-making to tailor a more patient-centered informed consent.

METHODS

A survey was performed involving patients 21 years old and above who attended the pre-operative evaluation clinic over a 1-month period in Singapore General Hospital. Questionnaires were administered to assess patients' perception of material risks, by trained interviewers. Patients' demographics were obtained. Mann-Whitney U test and Kruskal-Wallis one-way analysis of variance was used. Statistical significance was taken at p < 0.05.

RESULTS

Four hundred fourteen patients were eligible of which 26 refused to participate and 24 were excluded due to language barrier. 364 patients were recruited. A higher level of education (p < 0.007), being employed (p < 0.046) and younger age group (p < 0.003) are factors identified in patients who wanted greater participation in medical decisions. Gender, marital status, type of surgery, and previous surgical history did not affect their level of participation. The complications most patients knew about were Nausea (64.8%), Drowsiness (62.4%) and Surgical Wound Pain (58.8%). Patients ranked Heart Attack (59.3%), Death (53.8%) and Stroke (52.7%) as the most significant risks that they wanted to be informed about in greater detail. Most patients wanted to make a joint decision with the anaesthetist (52.2%), instead of letting the doctor decide (37.1%) or deciding for themselves (10.7%). Discussion with the anaesthetist (61.3%) is the preferred medium of communication compared to reading a pamphlet (23.4%) or watching a video (15.4%).

CONCLUSION

Age and educational level can influence medical decision-making. Despite the digital age, most patients still prefer a clinic consult instead of audio-visual multimedia for pre-operative anaesthetic counselling. The local population appears to place greater importance on rare but serious complications compared to common complications. This illustrates the need to contextualize information provided during informed consent to strengthen the doctor-patient relationship.

Randomized comparison of power Doppler ultrasonography-guided core-needle biopsy with open surgical biopsy for the characterization of lymphadenopathies in patients with suspected lymphoma

The sensitivity of lymph node core-needle biopsy under imaging guidance requires validation. We employed power Doppler ultrasonography (PDUS) to select the lymph node most suspected of malignancy and to histologically characterize it through the use of large cutting needle. Institutional review board approval and informed consent were obtained for this randomized clinical trial. In a single center between 1 January 2009 and 31 December 2015, patients with lymph node enlargement suspected for lymphoma were randomly assigned (1:1) to biopsy with either standard surgery or PDUS-guided 16-gauge modified Menghini needle. The primary endpoint was the superiority of sensitivity for the diagnosis of malignancy for core-needle cutting biopsy (CNCB). Secondary endpoints were times to biopsy, complications, and costs. A total of 376 patients were randomized into the two arms and received allocated biopsy. However, four patients undergoing CNCB were excluded for inadequate samples; thus, 372 patients were analyzed. Sensitivity for the detection of malignancy was significantly better for PDUS-guided CNCB [98.8%; 95% confidence interval (CI), 95.9–99.9] than standard biopsy (88.7%; 95% CI, 82.9–93; P < 0.001). For all secondary endpoints, the comparison was significantly disadvantageous for conventional approach. In particular, estimated cost per biopsy performed with standard surgery was 24-fold higher compared with that performed with CNCB. The presence of satellite enlarged reactive and/or necrotic lymph nodes may impair the success of an open surgical biopsy (OSB). PDUS and CNCB with adequate gauge are diagnostic tools that enable effective, safe, fast, and low-cost routine biopsy for patients with suspected lymphoma, avoiding psychological and physical pain of an unnecessary surgical intervention.

Should Surgery for Hypospadias Be Performed Before An Age of Consent?

Hypospadias is a relatively common genital condition in which the urethral opening forms on the underside of the penis, as opposed to at the tip of the glans. Patients with hypospadias are typically referred for surgery during infancy or early childhood. Recent evidence, however, indicates that many individuals with hypospadias do not experience the functional or psychosocial difficulties commonly attributed to the condition, and that surgical intervention for hypospadias carries substantial risk of adverse outcomes. In this article, we review published outcomes data and conduct an in-depth analysis of the typical rationales for hypospadias surgery, taking into consideration both the potential benefits and harms of the procedure, as well as the existence of nonsurgical alternatives. We argue, first, that most childhood surgeries for hypospadias are performed for anticipated future problems concerning function and cosmesis, rather than extant physical and/or psychosocial problems that are adversely affecting the child's well-being. Second, we contend that the surgery can be safely performed after an age of consent without increasing the absolute risk of surgical complications to an ethically meaningful degree. We conclude, therefore, that surgery for hypospadias should be performed only if requested by the affected individual, under conditions of informed consent.

2016 American Thyroid Association Guidelines for Diagnosis and Management of Hyperthyroidism and Other Causes of Thyrotoxicosis

BACKGROUND

Thyrotoxicosis has multiple etiologies, manifestations, and potential therapies. Appropriate treatment requires an accurate diagnosis and is influenced by coexisting medical conditions and patient preference. This document describes evidence-based clinical guidelines for the management of thyrotoxicosis that would be useful to generalist and subspecialty physicians and others providing care for patients with this condition.

METHODS

The American Thyroid Association (ATA) previously cosponsored guidelines for the management of thyrotoxicosis that were published in 2011. Considerable new literature has been published since then, and the ATA felt updated evidence-based guidelines were needed. The association assembled a task force of expert clinicians who authored this report. They examined relevant literature using a systematic PubMed search supplemented with additional published materials. An evidence-based medicine approach that incorporated the knowledge and experience of the panel was used to update the 2011 text and recommendations. The strength of the recommendations and the quality of evidence supporting them were rated according to the approach recommended by the Grading of Recommendations, Assessment, Development, and Evaluation Group.

RESULTS

Clinical topics addressed include the initial evaluation and management of thyrotoxicosis; management of Graves' hyperthyroidism using radioactive iodine, antithyroid drugs, or surgery; management of toxic multinodular goiter or toxic adenoma using radioactive iodine or surgery; Graves' disease in children, adolescents, or pregnant patients; subclinical hyperthyroidism; hyperthyroidism in patients with Graves' orbitopathy; and management of other miscellaneous causes of thyrotoxicosis. New paradigms since publication of the 2011 guidelines are presented for the evaluation of the etiology of thyrotoxicosis, the management of Graves' hyperthyroidism with antithyroid drugs, the management of pregnant hyperthyroid patients, and the preparation of patients for thyroid surgery. The sections on less common causes of thyrotoxicosis have been expanded.

CONCLUSIONS

One hundred twenty-four evidence-based recommendations were developed to aid in the care of patients with thyrotoxicosis and to share what the task force believes is current, rational, and optimal medical practice.

Qualitative study exploring surgical team members' perception of patient safety in conflict-ridden Eastern Democratic Republic of Congo

OBJECTIVE

To identify potential barriers to patient safety (PS) interventions from the perspective of surgical team members working in an operating theatre in Eastern Democratic Republic of Congo (DRC).

DESIGN

In-depth interviews were conducted and analysed using qualitative content analysis.

SETTING

Governmental referral teaching hospital in Eastern DRC.

PARTICIPANTS

We purposively selected 2-4 national and expatriate surgical team members from each specialisation. Of the 31 eligible surgical health workers (HWs), 17 volunteered to be interviewed.

RESULTS

Economics issues affected PS throughout the entire health system, from human resources and hospital management, to access to healthcare for patients. Surgical team members seemed embedded in a paternalistic organisational structure and blame culture accompanied by perceived inefficient support services and low salaries. The armed conflict did not only worsen these system failures, it also carried direct threats to patients and HWs, and resulted in complex indirect consequences compromising PS. The increased corruption within health organisations, and population impoverishment and substance abuse among health staff adversely altered safe care. Simultaneously, HWs' reported resilience and resourcefulness to address barrier to PS. Participants had varying views on external aid depending on its relevance.

CONCLUSIONS

The complex links between war and PS emphasise the importance of a comprehensive approach including occupational health to strengthen HWs' resilience, external clinical audits to limit corruption, and educational programmes in PS to support patient-centred care and address blame culture. Finally, improvement of equity in the health financing system seems essential to ensure access to healthcare and safe perioperative outcomes for all.

Acute Intraoperative Pulmonary Aspiration

Acute intraoperative aspiration is a potentially fatal complication with significant associated morbidity. Patients undergoing thoracic surgery are at increased risk for anesthesia-related aspiration, largely due to the predisposing conditions associated with this complication. Awareness of the risk factors, predisposing conditions, maneuvers to decrease risk, and immediate management options by the thoracic surgeon and the anesthesia team is imperative to reducing risk and optimizing patient outcomes associated with acute intraoperative pulmonary aspiration. Based on the root-cause analyses that many of the aspiration events can be traced back to provider factors, having an experienced anesthesiologist present for high-risk cases is also critical.

Micromorts--what is the risk?

The effective communication of risk, which is central to the process of consent, can be difficult, and can be hard for patients to understand. We introduce the potential utility of the micromort, a unit of risk defined as a one-in-a-million chance of sudden death, which allows clinicians to compare the risks of an intervention with those of different activities, making them easier to understand.

Geriatric oncology: problems with under-treatment within this population

We are currently faced with an aging population, which is rapidly growing worldwide. Two thirds of cancer occurs in the over 65-year age group. Societal conceptions from the past have created ageist stereotypes; old age is associated with frailty and the elderly are perceived to be destined for deterioration and loss of independence. Cancer within the elderly is also subject to these stereotypes, with elderly cancer patients considered by some not as likely to recover as younger patients with cancer. We summarise and review the current concerns regarding elderly management and treatments utilised for the management of oncological disease in the elderly, and discuss the impact of under-treatment within this population.

Total thyroidectomy as a method of choice in the treatment of Graves' disease - analysis of 1432 patients

Background

Graves’ disease represents an autoimmune disease of the thyroid gland where surgery has an important role in its treatment. The aim of our paper was to analyze the results of surgical treatment, the frequency of microcarcinoma and carcinoma, as well as to compare surgical complications in relation to the various types of operations performed for Graves’ disease.

Methods

We analysed 1432 patients (221 male and 1211 female) who underwent surgery for Graves’ disease at the Centre for Endocrine Surgery in Belgrade during 15 years (1996–2010). Average age was 34.8 years. Frequency of surgical complications within the groups was analyzed with nonparametric Fisher’s test.

Results

Total thyroidectomy (TT) was performed in 974 (68%) patients, and Dunhill operation (D) in 221 (15.4). Carcinoma of thyroid gland was found in 146 patients (10.2%), of which 129 (9%) were a microcarcinoma. Complication rates were higher in the TT group, where there were 31 (3.2%) patients with permanent hypoparathyroidism, 9 (0.9%) patients with unilateral recurrent nerve paralysis and 10 (1.0%) patients with postoperative bleeding. Combined complications, such as permanent hypoparathyroidism with bleeding were more common in the D group where there were 2 patients (0,9%), while unilateral recurrent nerve paralysis with bleeding was more common in the TT group where there were 3 cases (0,3%).

Conclusions

Frequency of complications were not significantly statistically different in relation to the type of surgical procedure. Total thyroidectomy represents a safe and efficient method for treating patients with Graves’ disease, and it is not followed by a greater frequency of complications in relation to less extensive procedures.

Neurodevelopmental implications of the general anesthesia in neonate and infants

Each year, about six million children, including 1.5 million infants, in the United States undergo surgery with general anesthesia, often requiring repeated exposures. However, a crucial question remains of whether neonatal anesthetics are safe for the developing central nervous system (CNS). General anesthesia encompasses the administration of agents that induce analgesic, sedative, and muscle relaxant effects. Although the mechanisms of action of general anesthetics are still not completely understood, recent data have suggested that anesthetics primarily modulate two major neurotransmitter receptor groups, either by inhibiting N-methyl-D-aspartate (NMDA) receptors, or conversely by activating γ-aminobutyric acid (GABA) receptors. Both of these mechanisms result in the same effect of inhibiting excitatory activity of neurons. In developing brains, which are more sensitive to disruptions in activity-dependent plasticity, this transient inhibition may have longterm neurodevelopmental consequences. Accumulating reports from preclinical studies show that anesthetics in neonates cause cellular toxicity including apoptosis and neurodegeneration in the developing brain. Importantly, animal and clinical studies indicate that exposure to general anesthetics may affect CNS development, resulting in long-lasting cognitive and behavioral deficiencies, such as learning and memory deficits, as well as abnormalities in social memory and social activity. While the casual relationship between cellular toxicity and neurological impairments is still not clear, recent reports in animal experiments showed that anesthetics in neonates can affect neurogenesis, which could be a possible mechanism underlying the chronic effect of anesthetics. Understanding the cellular and molecular mechanisms of anesthetic effects will help to define the scope of the problem in humans and may lead to preventive and therapeutic strategies. Therefore, in this review, we summarize the current evidence on neonatal anesthetic effects in the developmental CNS and discuss how factors influencing these processes can be translated into new therapeutic strategies.

Debulking surgery and intraperitoneal chemotherapy are associated with decreased morbidity in women receiving neoadjuvant chemotherapy for ovarian cancer

OBJECTIVE

The aims of this study were to compare the rate of completion of optimal debulking and/or 6 cycles of intraperitoneal (IP) chemotherapy in women with International Federation of Gynecologists and Obstetricians stage III/IV ovarian cancer undergoing neoadjuvant chemotherapy (NACT) versus primary surgery (PS) and to compare morbidity between these 2 groups.

METHODS

Ninety-six subjects with stage III/IV ovarian cancer who underwent either NACT or PS were identified. Data comparisons include rate of optimal debulking and completion rate of 6 cycles of IP chemotherapy. Other data collected included surgical times, length of stay, intensive care unit admissions, blood transfusions, bowel resections, major complications, and dose reductions. SigmaStat version 2.0 was used for statistical analysis.

RESULTS

Of the 96 subjects, 38 received NACT and 58 had PS. All 14 subjects with stage IV disease received NACT, and all experienced resolution of pleural effusion, based on computed tomographic imaging. Thirty-five (92%) of 38 NACT subjects versus 47 (81%) of 58 PS subjects were optimally debulked (P = 0.08). Thirty-six (95%) of 38 NACT subjects versus 37 (64%) of 58 PS subjects completed IP chemotherapy (P < 0.001). Length of stay was 3.26 (NACT) versus 5.08 (PS) days (P < 0.001). Intensive care unit admissions were 1 of 38 (NACT) versus 12 of 58 (PS) (P < 0.001). Bowel resections were done in 2 of 38 (NACT) versus 14 of 38 (PS) (P < 0.05). Duration of surgery was 96 minutes (NACT) versus 138 minutes (PS) (P < 0.001). A trend to fewer dose reductions occurred in NACT (1/38) versus PS (8/58) (P = 0.056).

CONCLUSIONS

The NACT subjects were more likely to complete IP chemotherapy and had decreased length of stay, intensive care unit admissions, bowel resections, and duration of surgery. Both optimal debulking and dose reductions were numerically but not statistically associated with NACT versus PS. This likely reflects a relatively high overall rate of optimal debulking and low rate of dose reductions in these subjects and would require a larger group to determine significance.

Safety in the emergency situation: the airway--a theatre team approach

Managing an expected or unanticipated difficult airway can result in morbidity and even mortality (Cook et al 2011). These scenarios place considerable demands on the anaesthetic team and require the wider support of theatre staff. It is crucial that the perioperative team is adequately prepared for these time-critical emergencies in order to prevent avoidable patient harm. This article introduces the topic and discusses the core knowledge and skills required of the perioperative team.

Single-stage preputial skin flap urethroplasty for long-segment urethral strictures: evaluation and determinants of success

OBJECTIVE

To determine the overall efficacy and predictors of success of the penile preputial flap in the management of complex urethral strictures >2.5 cm in length.

PATIENTS AND METHODS

We performed a retrospective and prospective study of 58 patients undergoing single-stage penile preputial flap urethroplasty for complex long-segment urethral strictures, without lichen sclerosus, repaired between May 2005 and April 2012 at our institution. For obvious reasons circumcised patients were excluded from the study. Results were assessed by univariate analysis of various patient characteristics, preoperative and postoperative patient satisfaction (based on symptoms), and urethral ultrasonography, retrograde urethrography and uroflowmetry.

RESULTS

The median (range) follow-up was 42 (6-90) months, the median (range) intra-operative stricture length was 48.5 (26-85) mm and the median (range) operating time was 90 (85-125) min. A total of 87.93% of patients had a satisfactory outcome, with an overall success rate of 81.03%. Diabetes mellitus (relative risk [RR] 5.21, confidence interval [CI] 2.31-64.68, P = 0.003) and smoking (RR 4.19, CI 1.54- 45.0, P = 0.01) were predictors of failure, while postinfective aetiology (RR 2.19), panurethral stricture (RR 2.73), stricture length >70 mm (RR 3.25), previous urethroplasty (RR 2.4) and severe peri-urethral fibrosis (RR 2.37) were also associated with a higher risk of failure.

CONCLUSIONS

A urologist should try to gain experience of all the methods of urethroplasty as the techniques may vary according to the circumstances. Single-stage preputial skin flap urethroplasty, in experienced and expert hands, has results equivalent to all other methods of urethroplasty in complex urethral strictures. We prefer this technique in this part of the world where buccal mucosa cannot be used because of dyskeratotic changes as a result of consumption of gutkha, tobacco, pan masala, betel nut.

Long-term effects of post-ischaemic oestrogen on brain injury in a rat transient forebrain ischaemia model

BACKGROUND

The current study was conducted to compare the effects of post-treatment with oestrogen on histological and neurological outcomes after short (7-day) and long (28-day) recovery periods in rats subjected to transient forebrain ischaemia.

METHODS

Male Sprague-Dawley rats were randomly assigned to one of five groups: vehicle (7-day recovery period), vehicle (28-day recovery period), oestrogen (17β-estradiol 200 μg/kg, 7-day), oestrogen (17β-estradiol 200 μg /kg, 28-day), or sham surgical (n = 8 in each group). After forebrain ischaemia was induced with bilateral carotid artery occlusion and haemorrhagic hypotension (mean arterial pressure = 40 mmHg) for 10 min, the brain was reperfused for 7 or 28 days. Either 17β-estradiol or vehicle was injected intravenously during the initial 2 min of reperfusion. To evaluate histological damage, the number of intact neurons per 1 mm in the hippocampal CA1 subfield was counted at 7 or 28 days after transient forebrain ischaemia.

RESULTS

At 7 days after ischaemia, the number of intact neurons in the hippocampal CA1 subfield was significantly greater in the oestrogen group [57.5 (46.5)/mm: median (interquartile range)] than in the vehicle group [10 (19.5) /mm; P = 0.014]. However, there was no difference between groups at 28 days after ischaemia [vehicle: 11 (20)/mm vs. oestrogen: 6 (11)/mm]. The neurological deficit scores in the oestrogen and vehicle groups were not different from the sham group at any point post-ischaemia.

CONCLUSION

The current study indicates that post-ischaemic administration of oestrogen provided short-term but not long-term neuroprotective effects in transient forebrain ischaemia in rats.

Complications of general anesthesia

A summary of complications associated with general anesthesia including their incidence, mechanism, risk factors, prevention strategies, and management is presented.

International advocacy for education and safety

Surgical safety has emerged as a significant global public health concern with reported mortality rates varying tremendously between developing and industrialized countries. This manuscript reviews some of the challenges encountered in providing safe anesthesia care in the humanitarian space; identifies the difficulties with providing high-quality education in developing countries; and describes how audits and quality improvement databases enhance our understanding of the nature and causes of harm to patients to inform the development of strategies for improvement.

Consent for pediatric anesthesia: an observational study

BACKGROUND

Informed consent prior to anesthesia is an important part of the pediatric pre-anesthetic consultation. This study aimed to observe and identify the number and nature of the anesthesia risks considered and communicated to parents/guardians and children during the pediatric informed consent process on the day of elective surgery.

METHODS

A convenience sample of anesthetists had their pre-anesthesia consultations voice recorded, prior to elective surgery, during a 4-month period at the largest tertiary referral centre for pediatric care in South Australia. A data collection form was used to note baseline demographic data, and voice recording transcripts were independently documented by two researchers and subsequently compared for accuracy regarding the number and nature of risks discussed.

RESULTS

Of the 96 voice recordings, 91 (92%) were suitable for the analysis. The five most commonly discussed risks were as follows: nausea and vomiting (36%); sore throat (35%); allergy (29%); hypoxia (25%); and emergence delirium (19%). Twenty-seven pre-anesthetic consultations (30%) were found to have had no discussion of anesthetic risk at all while a further 23 consultations (26%) incorporated general statements inferring that anesthesia carried risks, but with no elaboration about their nature, ramifications or incidence. The median number of risks (IQR) specifically mentioned per consultation was higher, 3 (1) vs 1 (1), P < 0.05, when the consultation was performed by a trainee rather than a consultant anesthetist and when the patient had previous anesthesia experience odds ratio 0.34, 95% CI [0.13, 0.87], P = 0.025.

CONCLUSIONS

The pediatric anesthesia risk discussion is very variable. Trainees tend to discuss more specific risks than consultants and a patient's previous experience of anesthesia was associated with a more limited discussion of anesthesia risk.