Response time in the emergency services. Systematic review

The growth of the urban population raises concern about municipal public managers in the sense of providing emergency medical services (EMS) that are aligned with the needs of prehospital emergency medical care demanded by the population. The literature review aims at presenting the response time of emergency medical services in several parts of the world and discussing some factors that interfere in the result of this indicator such as GDP (Gross Domestic Product) percentage spent on health and life expectancy of countries. The study will also show that in some of the consulted articles, authors suggest to EMS recommendations for decreasing the response time using simulations, heuristics and metaheuristics. Response time is a basic indicator of emergency medical services, in such a way that researchers use the descriptive statistics to evaluate this parameter. Europe and the USA outstand in the publication of studies that present this information. Some articles use stochastic and mathematical methods to suggest models that simulate scenarios of response time reduction and suggest such proposals to the local EMS. Countries in which the response time was identified have a high index of human development and life expectancy between 74.7 and 83.7 years.

Nature as a source of drugs for ophthalmology

Nature has always provided an unlimited source of biologically-active compounds. Since the beginning of mankind, humans have sought resources in fauna and flora to treat eye diseases. However, it was only after the Industrial Revolution that extracts of plants and substances of animal origin could be used safely, as has been determined by controlled interventional studies. Two major challenges faced by ocular pharmacology are the following: developing drugs that are able to reduce blindness due to glaucoma; and controlling the pain associated with eye surgery. The search for a drug that effectively lowers intraocular pressure and controls the progression of glaucoma has led to the development of various ocular hypotensive agents, such as physostigmine from the Physostigma venenosum plant. The anesthetic properties of cocaine, extracted from Erythroxylon coca, finally enabled surgical procedures in the eye. Several new natural compounds have been investigated in an attempt to identify substances with the potential to provide additional benefits to eye tissue and vision. Emerging evidence of anti-inflammatory, wound-healing, antimicrobial, antioxidant, antitumor, and antiangiogenic properties attributed to plant extracts and animal tissues has encouraged more investment in research in this area. Despite technological advances in synthesizing drugs, the pharmaceutical industry still seeks new active compounds from natural sources as well as from revisiting already-established naturally derived compounds. Although a large number of naturally-occurring compounds is known, this review article focuses on the bioactive substances with scientifically-proven benefits for ocular tissues.

Ischemic preconditioning in different times and its effect on bacterial translocation induced by intestinal ischemia and reperfusion in rats

OBJECTIVE

To evaluate the effects of different times of ischemic preconditioning (IPC) on intestinal bacterial translocation (BT).

METHODS

Thirty Wistar rats weighing 280 ± 27 g were divided into five groups. In the IR group (n = 6), laparotomy was performed and the superior mesenteric artery was occluded by an atraumatic microclamp for 30 minutes. In the four preconditioning groups (n = 6 each) before the 30 minutes of ischemia-reperfusion (I/R) rats underwent IPC for two, five, ten and 15 minutes, followed by the same time of reperfusion. In order to assess whether the time of preconditioning influenced the onset of bacterial translocation, samples of mesenteric lymph nodes, liver and spleen were collected in sterile conditions twenty-four hours after the procedures for quantification of bacterial colony forming units per gram of tissue (CFU/g). Blood was collected for measurement of cytokines.

RESULTS

In the I/R group, the total CFU/g in mesenteric lymph nodes, spleen, liver, as well as the serum TNF-á, IL-1â and IL-6 were significantly higher than in the other groups (p <0.05). Preconditioning for 15 minutes significantly attenuated BT and serum cytokines when compared to other periods of preconditioning (p <0.05).

CONCLUSION

Our data suggest preconditioning as a key factor to reduce bacterial translocation in intestinal I/R. On a scale of two to 15 minutes, the best time of ischemic preconditioning for the attenuation of bacterial translocation was 15 minutes.

Metaheuristics in the decentralization of SAMU bases using simulation in northeastern Brazil

BACKGROUND AND OBJECTIVE

The growth of the urban population exerts considerable pressure on municipalities' public managers to focus their attention on providing emergency medical care that meets the growing demand for emergency pre-hospital medical care. Currently, there are a significant number of traffic accidents and other serious occurrences, such as heart attacks, drownings, epidemics, fires and disasters (floods, landslides, earthquakes) that demand a prompt and seamless response from pre-hospital medical care. As a result of such scenario, the present article endeavours to apply a dual-coverage mathematical model (DSM-Double Standard Model) to define the optimal location of the Emergency Medical Service (SAMU) decentralized dispatch bases in Natal/RN and conduct a simulation study to evaluate the displacement of ambulances between such bases.

METHODS

The methodological course that was followed by this research constitutes of 12 steps. The location of decentralized bases for sending emergency ambulances was established using the DSM model and the simulation model was performed using the FlexSim© software version 2018 evaluating base coverage in relation to the total number of calls by demand points for different scenarios.

RESULTS

The results obtained throughout the research demonstrated the feasibility of redefining the decentralized bases of SAMU/Natal ambulances as a strategy to reduce response time and guarantee compliance with performance parameters established by international organizations (the World Health Organization, for instance, establishes the time of 8 minutes for emergency medical service calls response). The simulation study showed a significant reduction in response time, by up to 60% in some cases.

CONCLUSION

The proposition of new locations for the decentralized dispatch bases of the SAMU/Natal can provide an overall significant reduction on the ambulance response time, so as to contribute to expedite the initiation of treatment of patients, if necessary, sent to hospitals.

Analysis of Shared Services Center Deployment at a University Hospital (CENTROMED) in Natal, Brazil: A Study on Availability and Capacity

Purpose

The hospital is an organization that has its own characteristics that differentiate it from other institutions. It is characterized as a company providing services of social purpose, with a great operational complexity, due to the diversity of services provided. These organizations are dependent on technology to play the role of assisting society. Technology is onerous: it is up to the aforementioned institutions to adopt management tools to control these costs. The present study explains the process of implementing a shared service centre (CENTROMED) for the management of hospital medical equipment (HME) at the Hospital Universitário Onofre Lopes (HUOL) in the city of Natal, RN.

Patients and Methods

In order to achieve a successful implementation, four key steps were taken: process modelling; determination of key performance indicators, organization of physical arrangement; and adequate training and development of human resources. The work followed an action research approach focusing on three main methodological steps: identification of HUOL clinical engineering team’s demands, definition of the process for providing the equipment service, and definition of the supply items that will be managed.

Results

The preliminary results of this research indicate that the centralization of the management of the HME contributed to the optimization of the processes, the reduction of the costs and the availability of the equipment, thus providing a powerful management tool to support the hospital operational management.

Conclusion

The utilization of the shared service center for the management of hospital medical equipment is ultimately linked to the patient’s well-being as it contributes to the agility in hospital procedures and provides support in maintaining the capacity of attendance of the assistance teams.

Cholecystectomy before, simultaneously, or after ERCP in patients with acute cholecystitis: A protocol for systematic review and/or meta analysis

INTRODUCTION

Cholecystectomy is the intervention of choice for treating acute cholecystitis; when conservative management does not work, it operates on the patient outside the critical condition. It can be performed together with or after endoscopic papillotomy through endoscopic retrograde cholangiopancreatography (ERCP) when it is concurrent with a situation of cholechodocolithiasis or when there is compression and consequent increase in pressure in the bile duct caused by a calculus jammed in the vesicular infundibulum (Mirizzi's syndrome), with or without jaundice, fever, and pain in the right hypochondrium (Charcot's Triad), which can progress to sepsis of biliary origin. This review aims to assess whether the timing of cholecystectomy (before or after ERCP) interferes with the postoperative period and clinical outcome in patients with acute cholecystitis.

METHODS AND ANALYSIS

By searching the MEDLINE/PubMed, Embase, Web of Science, ScienceDirect, ClinicalTrials.gov, CINAHAL, Latin American and Caribbean Literature in Health Sciences, Scopus and Cochrane Central databases, Controlled Trials Registry Randomized clinical trials will be searched to analyze whether ERCP performed before or after open or laparoscopic cholecystectomy (LC) in patients with acute cholecystitis is beneficial or not, through the analysis of postoperative complications. No language or publication period restrictions will be imposed. The primary outcome will be postoperative complications (postoperative morbidity and mortality). Four independent reviewers will select the studies and extract data from the original publications, with a fifth reviewer in case of disagreement regarding the inclusion or not of particular research in the present review. The risk of bias will be assessed using The Risk of Bias 2 (RoB 2.0) tool, and the certainty of evidence will be evaluated using the grading of recommendations assessment, development, and evaluation. Data synthesis will be performed using the Review Manager software (RevMan V.5.2.3). To assess heterogeneity, we will calculate the I2 statistics. Additionally, a quantitative synthesis will be performed if the included studies are sufficiently homogeneous.

ETHICS AND DISCLOSURE

Since the present study will review secondary data, previously published and scientifically validated, it will not be necessary to obtain ethical approval. The results of this systematic review will be published in a peer-reviewed journal.

PROSPERO REGISTRATION NUMBER

International Prospective Registry of Systematic Reviews (PROSPERO) CRD42021290726.

Surgery remember@: an innovation to reduce surgical cancellations

The use of mobile phones has dramatically increased all over the world. Such revolution in the communication amongst individuals has a great impact in patient care, supporting their self-management and promoting shared responsibility with health services. Given that improved communication facilitates compliance with scheduled procedures and reduces surgical cancellations, the current work aims to develop a communication tool named Surgery Remember@ to mitigate surgical suspensions due to patient absenteeism. The present article is a study of technological production divided into four chapters: literature review; analysis of the hospital administrative profile; software development; and process mapping for software implementation. Taking into account that in the last three years the problem of absenteeism was the main cause of institutional surgical cancellations; the development of Surgery Remember@ endeavours to reduce surgery cancellations, improving efficiency and reducing costs. It is known that sending messages three days before the surgical procedure makes it possible to replace patients in the event of cancellations, optimizing the human and material resources in the operating room. The confirmation of the pre-aesthetic consultation is also positive, for it allows the verification of perioperative assistance improvement. Hence, besides being viable and easy to implement, the software developed allows the addition of other features based on user requirements, proving to be an asset to reduce surgery cancellations.