Anesthesia for Cesarean Delivery

Building back better children's surgical services toward universal health coverage: Perspectives from Bangladesh and Zimbabwe

Introduction

This article is part of the Research Topic 'Health Systems Recovery in the Context of COVID-19 and Protracted Conflict'. Children's surgical services are crucial, yet underappreciated, for children's health and must be sufficiently addressed to make and sustain progress toward universal health coverage (UHC). Despite their considerable burden and socioeconomic cost, surgical diseases have been relatively neglected in favor of communicable diseases living up to their inauspicious moniker: 'the neglected stepchild of global health'. This article aims to raise awareness around children's surgical diseases and offers perspectives from two prototypical LMICs on strengthening surgical services in the context of health systems recovery following the COVID-19 experience to make and sustain progress toward UHC.

Approach

We used a focused literature review supplemented by the perspectives of local experts and the 6-components framework for surgical systems planning to present two case studies of Bangladesh and Zimbabwe. The lived experiences of the authors are used to describe the impact of COVID-19 on respective surgical systems and offer perspectives on building back the health system and recovering essential health services for sustainability and resilience.

Findings

We found that limited high-level policy and planning instruments, an overburdened and under-resourced health and allied workforce, underdeveloped surgical infrastructure (from key utilities to essential medical products), lack of locally generated research, and the specter of prohibitively high out-of-pocket costs for children's surgery are common challenges in both countries that have been exacerbated by the COVID-19 pandemic.

Discussion

Continued chronic underinvestment and inattention to children's surgical diseases coupled with the devastating effect of the COVID-19 pandemic threaten progress toward key global health objectives. Urgent attention and investment in the context of health systems recovery is needed from policy to practice levels to improve infrastructure; attract, retain and train the surgical and allied health workforce; and improve service delivery access with equity considerations to meet the 2030 Lancet Commission goals, and make and sustain progress toward UHC and the SDGs.

Implementing essential diagnostics-learning from essential medicines: A scoping review

The World Health Organization (WHO) model list of Essential In vitro Diagnostic (EDL) introduced in 2018 complements the established Essential Medicines List (EML) and improves its impact on advancing universal health coverage and better health outcomes. We conducted a scoping review of the literature on implementing the WHO essential lists in Africa to inform the implementation of the recently introduced EDL. We searched eight electronic databases for studies reporting on implementing the WHO EDL and EML in Africa. Two authors independently conducted study selection and data extraction, with disagreements resolved through discussion. We used the Supporting the Use of Research Evidence (SURE) framework to extract themes and synthesised findings using thematic content analysis. We used the Mixed Method Appraisal Tool (MMAT) version 2018 to assess the quality of included studies. We included 172 studies reporting on EDL and EML after screening 3,813 articles titles and abstracts and 1,545 full-text papers. Most (75%, n = 129) studies were purely quantitative in design, comprising descriptive cross-sectional designs (60%, n = 104), 15% (n = 26) were purely qualitative, and 10% (n = 17) had mixed-methods approaches. There were no qualitative or randomised experimental studies about EDL. The main barrier facing the EML and EDL was poorly equipped health facilities-including unavailability or stock-outs of essential in vitro diagnostics and medicines. Financial and non-financial incentives to health facilities and workers were key enablers in implementing the EML; however, their impact differed from one context to another. Only fifty-six (33%) of the included studies were of high quality. Poorly equipped and stocked health facilities remain an implementation barrier to essential diagnostics and medicines. Health system interventions such as financial and non-financial incentives to improve their availability can be applied in different contexts. More implementation study designs, such as experimental and qualitative studies, are required to evaluate the effectiveness of essential lists.

Regional anesthesia global health collaborations- a scoping review of current intervention methods

PURPOSE OF REVIEW

Perioperative anesthesia-related mortality is significantly higher in low-resource compared to high-resource countries. Regional anesthesia techniques can provide safety, cost, and access benefits when compared to general anesthesia in these settings but is underutilized primarily due to a lack of experienced educators and training opportunities. Academic institutions and international organizations are attempting to fill this educational gap through collaborations, but these efforts need examination for best practices going forward.

RECENT FINDINGS

Most collaborative anesthesia interactions between high and low resource areas have occurred between North America or Europe, and Africa or Asia and a majority have involved an educational intervention. Only 7% of the studies used a recognized framework to evaluate the intervention used in their research, such as the Kirkpatrick, REAIM or CFIR method. All recent studies reviewed reported a positive impact from educational collaborations. Only 7% of interventions have had a primary focus on regional anesthesia and most were reported between 2016 and 2022.

SUMMARY

Robust reports on international collaborations providing capacity enhancing educational interventions in regional anesthesia have increased in recent years but are still rare and should be encouraged going forward. Short courses supported by high-resource countries can be effective in low-resource areas when partnerships produce curricula that are well designed.

Pharmacogenetic and drug interaction aspects on ketamine safety in its use as antidepressant - implications for precision dosing in a global perspective

Ketamine and its enantiomer S-ketamine (esketamine) are known to produce rapid-onset antidepressant effects in major depression. Intranasal esketamine has recently come into the market as an antidepressant. Besides experience from short-term use in anesthesia and analgesia, the experience with ketamine as long-term medication is rather low. The use of ketamine and esketamine is limited due to potential neurotoxicity, psychocomimetic side effects, potential abuse and interindividual variability in treatment response including cessation of therapy. Therefore, taking a look at individual patient risks and potential underlying variability in pharmacokinetics may improve safety and dosing of these new antidepressant drugs in clinical practice. Differential drug metabolism due to polymorphic cytochrome P450 (CYP) enzymes and gene-drug interactions are known to influence the efficacy and safety of many drugs. Ketamine and esketamine are metabolized by polymorphic CYP enzymes including CYP2B6, CYP3A4, CYP2C9 and CYP2A6. In antidepressant drug therapy, usually multiple drugs are administered which are substrates of CYP enzymes, increasing the risk for drug-drug interactions (DDIs). We reviewed the potential impact of polymorphic CYP variants and common DDIs in antidepressant drug therapy affecting ketamine pharmacokinetics, and the role for dose optimization. The use of ketamine or intranasal esketamine as antidepressants demands a better understanding of the factors that may impact its metabolism and efficacy in long-term use. In addition to other clinical and environmental confounders, prior information on the pharmacodynamic and pharmacokinetic determinants of response variability to ketamine and esketamine may inform on dose optimization and identification of individuals at risk of adverse drug reactions.

Distribution of cesarean delivery by Robson classification and predictors of postspinal anesthesia hypotension in Windhoek referral hospitals: A cross-sectional study

Background

There are concerns that high cesarean section (CS) rates are driven by nonmedical indications and unmitigated maternal hypotension following spinal anesthesia (SA) has materno fetal effects.

Aims

Our objective was to investigate CS rates using Robson classification, identify patient groups for focused intervention as well as assess the incidence and predictors of maternal hypotension following SA for cesarean delivery.

Subjects and Methods

A cross sectional design was employed over 3 months (February-April, 2019). Data about total deliveries (vaginal and operative) were obtained from the hospital medical records. For parturients who had CS, variables which covered maternal characteristics, conduct of anesthesia, and the index pregnancy according to Robson classification system were entered into a proforma designed for the study.

Results

The total deliveries were 3031, of which 556 were CSs, giving a CS rate of 18.3%. Twenty one nonconsenting parturients were excluded, so 535 responded. Robson groups 5, 10, and 1 combined contributed 75% [401/535] to the overall CS. Two or more previous CS, 29.7% [159/535], was the main indication for performing CS, followed by maternal request 12.9% [69/535]. The incidence of maternal hypotension was 62.6% (293/468); the independent predictors were elective CS and having comorbidities.

Conclusion

We found a low CS rate and Robson groups 5, 10, and 1 were the major contributors - previous CS (≥2) and maternal request were the predominant indications for performing CS. The independent predictors of SA induced hypotension were presence of comorbidities and elective CS.

CYP2B6 Functional Variability in Drug Metabolism and Exposure Across Populations-Implication for Drug Safety, Dosing, and Individualized Therapy

Adverse drug reactions (ADRs) are one of the major causes of morbidity and mortality worldwide. It is well-known that individual genetic make-up is one of the causative factors of ADRs. Approximately 14 million single nucleotide polymorphisms (SNPs) are distributed throughout the entire human genome and every patient has a distinct genetic make-up which influences their response to drug therapy. Cytochrome P450 2B6 (CYP2B6) is involved in the metabolism of antiretroviral, antimalarial, anticancer, and antidepressant drugs. These drug classes are commonly in use worldwide and face specific population variability in side effects and dosing. Parts of this variability may be caused by single nucleotide polymorphisms (SNPs) in the CYP2B6 gene that are associated with altered protein expression and catalytic function. Population variability in the CYP2B6 gene leads to changes in drug metabolism which may result in adverse drug reactions or therapeutic failure. So far more than 30 non-synonymous variants in CYP2B6 gene have been reported. The occurrence of these variants show intra and interpopulation variability, thus affecting drug efficacy at individual and population level. Differences in disease conditions and affordability of drug therapy further explain why some individuals or populations are more exposed to CYP2B6 pharmacogenomics associated ADRs than others. Variabilities in drug efficacy associated with the pharmacogenomics of CYP2B6 have been reported in various populations. The aim of this review is to highlight reports from various ethnicities that emphasize on the relationship between CYP2B6 pharmacogenomics variability and the occurrence of adverse drug reactions. In vitro and in vivo studies evaluating the catalytic activity of CYP2B6 variants using various substrates will also be discussed. While implementation of pharmacogenomic testing for personalized drug therapy has made big progress, less data on pharmacogenetics of drug safety has been gained in terms of CYP2B6 substrates. Therefore, reviewing the existing evidence on population variability in CYP2B6 and ADR risk profiles suggests that, in addition to other factors, the knowledge on pharmacogenomics of CYP2B6 in patient treatment may be useful for the development of personalized medicine with regards to genotype-based prescription.

Inclusion of Children's Surgery in National Surgical Plans and Child Health Programmes: the need and roadmap from Global Initiative for Children's Surgery

About 1.7 billion children and adolescents, mostly in low- and middle-income countries (LMICs) lack access to surgical care. While some of these countries have developed surgical plans and others are in the process of developing theirs, children's surgery has not received the much-needed specific emphasis and focus in these plans. With the significant burden of children's surgical conditions especially in low- and middle-income countries, universal health coverage and the United Nations' (UN) Sustainable Development Goals (SDG) will not be achieved without deliberate efforts to scale up access to children's surgical care. Inclusion of children's surgery in National Surgical Obstetric and Anaesthesia Plans (NSOAPs) can be done using the Global Initiative for Children's Surgery (GICS)-modified Children's Surgical Assessment Tool (CSAT) tool for baseline assessment and the Optimal Resources for Children Surgical Care (OReCS) as a foundational tool for implementation.

Surgical care in district hospitals in sub-Saharan Africa: a scoping review

OBJECTIVE

To provide a general overview of the reported current surgical capacity and delivery in order to advance current knowledge and suggest targets for further development and research within the region of sub-Saharan Africa.

DESIGN

Scoping review.

SETTING

District hospitals in sub-Saharan Africa.

DATA SOURCES

PubMed and Ovid EMBASE from January 2000 to December 2019.

STUDY SELECTION

Studies were included if they contained information about types of surgical procedures performed, number of operations per year, types of anaesthesia delivered, cadres of surgical/anaesthesia providers and/or patients' outcomes.

RESULTS

The 52 articles included in analysis provided information about 16 countries. District hospitals were a group of diverse institutions ranging from 21 to 371 beds. The three most frequently reported procedures were caesarean section, laparotomy and hernia repair, but a wide range of orthopaedics, plastic surgery and neurosurgery procedures were also mentioned. The number of operations performed per year per district hospital ranged from 239 to 5233. The most mentioned anaesthesia providers were non-physician clinicians trained in anaesthesia. They deliver mainly general and spinal anaesthesia. Depending on countries, articles referred to different surgical care providers: specialist surgeons, medical officers and non-physician clinicians. 15 articles reported perioperative complications among which surgical site infection was the most frequent. Fifteen articles reported perioperative deaths of which the leading causes were sepsis, haemorrhage and anaesthesia complications.

CONCLUSION

District hospitals play a significant role in sub-Saharan Africa, providing both emergency and elective surgeries. Most procedures are done under general or spinal anaesthesia, often administered by non-physician clinicians. Depending on countries, surgical care may be provided by medical officers, specialist surgeons and/or non-physician clinicians. Research on safety, quality and volume of surgical and anaesthesia care in this setting is scarce, and more attention to these questions is required.

A survey of anaesthesia practices at all hospitals performing caesarean sections in Sierra Leone

BACKGROUND

Providing safe anaesthesia is essential when performing caesarean sections, one of the most commonly performed types of surgery. Anaesthesia-related causes of maternal mortality are generally considered preventable. The primary aim of our study was to assess the type of anaesthesia used for caesarean sections in Sierra Leone. Secondary aims were to identify the type and training of anaesthesia providers, availability of equipment and drugs and use of perioperative routines.

METHODS

All hospitals in Sierra Leone performing caesarean sections were included. In each facility, one randomly selected anaesthesia provider was interviewed face-to-face using a predefined questionnaire.

RESULTS

In 2016, 36 hospitals performed caesarean sections in Sierra Leone. The most commonly used anaesthesia method for caesarean section was spinal anaesthesia (63%), followed by intravenous ketamine without intubation; however, there was a wide variety between hospitals. Of all anaesthesia providers, 33% were not qualified to provide anaesthesia independently, as stipulated by local regulations. Of those, 50% expressed high confidence in their skills to handle obstetric emergencies. There were discrepancies among hospitals in the availability of essential drugs, the use of post-operative recovery and the presence of a functioning blood bank.

CONCLUSION

Anaesthesia for caesarean sections in Sierra Leone showed a predominance for spinal anaesthesia. The workforce consisted mainly of non-physicians, of which a third was not trained to provide anaesthesia independently. Both the type of anaesthesia and the presence of qualified anaesthetic providers was widely variable between hospitals. Significant gaps were identified in the availability of equipment, essential drugs and perioperative routines.

Benefits and Barriers to Increasing Regional Anesthesia in Resource-Limited Settings

Safe and accessible surgical and anesthetic care is critically limited for over half of the world's population, particularly in Sub-Saharan African and Southeast Asian countries. Increasing the use of regional anesthesia in these areas has potential benefits regarding access, safety, and cost-effectiveness. Perioperative anesthesia-related mortality is significantly higher in resource-limited countries and every effort should be made to encourage the use of anesthetic techniques in these countries that are safest under the present conditions. Studies from Sub-Saharan Africa, although limited in number, have shown a lower risk of death with regional compared to general anesthesia. Regional anesthesia has the further benefit of decreasing the risk of COVID-19 spread to healthcare providers by avoiding the aerosol-generating procedures that occur during general anesthesia. Neuraxial regional anesthesia is relatively easy to teach and perform and is considered the anesthetic of choice for surgeries below the umbilicus in resource-limited settings due to its safety, efficacy, and low cost. Although regional anesthesia has multiple potential advantages, education and training of anesthetic providers in low-and-middle-income countries (LMIC) are a significant barrier to growth. Anesthesia professionals, especially in Sub-Saharan Africa, are often poorly supported and undervalued, and recruitment and retention of adequate numbers of trained practitioners are a continuing problem. Greater use of regional anesthesia could be one way to safely increase anesthesia access and simultaneously create value and enthusiasm for the field. Deficits in anesthesia infrastructure, equipment, and drugs also limit anesthesia capacity in low-and middle-income countries. Ultrasound-guided regional anesthesia may be helpful in improving access to safe and reliable anesthesia in low-resource countries as it continues to become more user-friendly, durable, and affordable.

Adaptations in pediatric anesthesia care and airway management in the resource-poor setting

The need for safe and quality pediatric anesthesia care in low- and middle-income countries (LMICs) is huge. An estimated 1.7 billion children do not have access to surgical care, and the majority are in LMICs. In addition, most LMICs do not have the requisite surgical workforce including anesthesia providers. Surgery is usually performed at three levels of facilities: district, provincial, and national referral hospitals. Unfortunately, the manpower, equipment, and other resources available to provide surgical care for children vary greatly at the different level facilities. The majority of district level hospitals are staffed solely by non-physician anesthesia providers with variable training and little support to manage complicated pediatric patients. Airway and respiratory complications are known to account for a large portion of pediatric perioperative complications. Management of the difficult pediatric airway pathology is a challenge for anesthesia providers regardless of setting. However, in the low-resource setting poor infrastructure, lack of transportation systems, and crippled referral systems lead to late presentation. There is often a lack of pediatric-sized anesthesia equipment and resources, making management of the local pathology even more challenging. Efforts are being made to offer these providers additional training in pediatric anesthesia skills that incorporate low-fidelity simulation. Out of necessity, anesthesia providers in this setting learn to be resourceful in order to manage complex pathologies with fewer, less ideal resources while still providing a safe anesthetic.

Post-Caesarean analgesia in Timor-Leste, a low-middle-income country

Timor-Leste is a small, low-middle-income country in Southeast Asia. It is reported to spend less on healthcare than any other country. Hospital Nacional Guido Valadares performs 6 000 deliveries a year. Epidural analgesia, intrathecal opiates, transversus abdominis plane blocks, oral and intravenous opiates, and non-steroidal anti-inflammatory agents have all been mooted as techniques useful in improving post-caesarean analgesia. Most of these options are unavailable in Timor-Leste. Opiate use in theatre is minimal and opiates are unavailable on the ward. Epidural anaesthesia and patient controlled analgesia are unavailable. A locally formulated post-caesarean pain management protocol, taking into account available agents and expertise, encourages spinal anaesthesia with hyperbaric bupivacaine followed by 100 mg intramuscular tramadol in the recovery area, followed by oral paracetamol 1 gm qid., tramadol 50 mg qid. and ibuprofen 400 mg tds. in the wards. This study sought to determine the efficacy of this protocol in a low resource environment.