Mg Of Epinephrine Research Articles

Adrenaline intravenous therapy persistence grade I severe allergic reaction: A case report and literature review.

At present, there is still insufficient understanding of the progression from persistent allergic reactions to severe reactions. Adrenaline remains the preferred medication for severe allergic reactions, and intramuscular injection of adrenaline can also be considered for patients with grade I reactions that are difficult to alleviate gastrointestinal symptoms. It is worth further discussing whether it is possible to break the conventional intramuscular injection recommended by the guidelines when the effect of intramuscular injection is not ideal for persistent grade I severe allergic reactions. A young male, 20 years of age, was admitted to emergency department because of repeated rash for 3 days and abdominal pain for 6 hours after taking traditional Chinese medicine. After hormone therapy, the rash continued to recur and secondary gastrointestinal symptoms occurred on the 3th day. Adrenaline intramuscular injection was given to temporarily relieve the rash and abdominal pain, but symptoms still persisted. The patient was diagnosed with persistent severe allergic reaction (grade I). Continuous intravenous infusion of low-dose adrenaline under electrocardiographic monitoring, real-time monitoring of heart rate and blood pressure, and routine treatment with methylprednisolone, diphenhydramine, calcium gluconate, and cetirizine. During this period, adrenaline intramuscular injection is temporarily added when abdominal pain symptoms are obvious. The entire treatment process used a total of 6.8 mg of adrenaline. During the entire period of adrenaline intervention, the patient did not experience any new discomfort, and there were no abnormal fluctuations in heart rate, rhythm, or blood pressure. The symptoms of rash and abdominal pain gradually improved. For patients with persistent grade I severe allergic reactions, intravenous administration of low-dose adrenaline under close vital sign monitoring is safe, feasible, and highly effective in preventing biphasic, persistent, or worsening allergic reactions.

A potentially lifesaving error: unintentional high-dose adrenaline administration in anaphylaxis-induced cardiac arrest; a case report

BackgroundCardiopulmonary resuscitation is a crucial skill for emergency medical services. As high-risk-low-frequency events pose an immense mental load to providers, concepts of crew resource management, non-technical skills and the science of human errors are intended to prepare healthcare providers for high-pressure situations. However, medical errors occur, and organizations and institutions face the challenge of providing a blame-free error culture to achieve continuous improvement by avoiding similar errors in the future. In this case, we report a critical medical error during an anaphylaxis-associated cardiac arrest, its handling and the unexpected yet favourable outcome for the patient.Case presentationDuring an out-of-hospital cardiac arrest due to chemotherapy-induced anaphylaxis, a patient received a 10-fold dose of epinephrine due to shortcomings in communication and standardization via a central venous port catheter. The patient converted from a non-shockable rhythm into a pulseless ventricular tachycardia and subsequently into ventricular fibrillation. The patient was cardioverted and defibrillated and had a return of spontaneous circulation with profound hypotension only 6 min after the administration of 10 mg epinephrine. The patient survived without any residues or neurological impairment.ConclusionsThis case demonstrates the potential deleterious effects of shortcomings in communication and deviation from standard protocols, especially in emergencies. Here, precise instructions, closed-loop communication and unambiguous labelling of syringes would probably have avoided the epinephrine overdose central to this case. Interestingly, this serious error may have saved the patient’s life, as it led to the development of a shockable rhythm. Furthermore, as the patient was still in profound hypotension after administering 10 mg of epinephrine, this high dose might have counteracted the severe vasoplegic state in anaphylaxis-associated cardiac arrest. Lastly, as the patient was receiving care for advanced malignancy, the likelihood of termination of resuscitation in the initial non-shockable cardiac arrest was significant and possibly averted by the medication error.

Relationship between Postoperative Complications and Ratio of Amount of Wetting Solution to Ideal Body Weight in Liposuction Procedures.

The use of wetting solutions (WSs) during high-volume liposuction is standard; however, the optimal amount of WS and its components and their effect on postoperative complications are unclear. We evaluated the effect of a WS and its components, calculated according to ideal body weight (IBW), on postoperative complications. High-volume liposuction with a WS containing 0.5 g of lidocaine and 0.5 mg of epinephrine in each liter was performed in 192 patients. Patients who received ≤90 mL/kg of WS were designated as group I and those who received >90 mL/kg of WS as group II. Postoperative complications and adverse events that occurred until discharge were recorded. The mean total amount of epinephrine in the WS was significantly higher for group II (3.5 mg; range, 3.0-4.0 mg) than for group I (2.0 mg; range, 1.8-2.5 mg; p < 0.001), as was the mean total amount of lidocaine (3.5 g [range, 3.5-4.3 g] vs. 2.0 g [range, 1.8-2.5 g], respectively; p < 0.001). No major cardiac or pulmonary complications occurred in either group. Administration of >90 mL/kg of WS increased the median risk of postoperative nausea 5.3-fold (range, 1.8- to 15.6-fold), that of hypertension 4.9-fold (range, 1.1- to 17.7-fold), and that of hypothermia 4.2-fold (range, 1.1- to 18.5-fold). The two groups had similar postoperative pain scores and blood transfusion rates. The risks of postoperative nausea, vomiting, hypothermia, and hypertension may increase in patients who receive >90 mL/kg of WS calculated according to IBW during high-volume liposuction.

Natto (fermented soybeans)-induced anaphylaxis in a surfer with the possibility of sensitization to poly(γ-glutamic acid) from cutaneous exposure to jellyfish sting: a case report

BackgroundWe report a case of anaphylaxis induced by natto (fermented soybeans) allergy that occurred following dermal sensitization from a jellyfish sting.Case presentationA 49-year-old male presented to the emergency room complaining of an acute onset of erythema with pruritis that appeared while he was surfing. Given that his heart rate dropped to ~ 40 bpm without a decline in blood pressure or oxygen saturation, we suspected anaphylaxis and administered 0.5 mg of adrenaline intramuscularly. Immediately after the muscular adrenaline injection, his heart rate recovered to ~ 60–70 bpm.ConclusionsThe major allergen that induces natto allergy is poly(γ-glutamic acid) (PGA), which is present in its mucilage. Given that PGA is also produced by jellyfish tentacles, it can be inferred that the PGA sensitization occurred via dermal exposure to jellyfish PGA. This is an example of a food allergy induced by animal stings. As PGA is a high-molecular-weight polymer, natto allergy, despite being IgE-mediated, often presents with late-onset anaphylaxis, which typically develops half a day after digestion. PGA has a wide range of applications in pharmaceuticals, cosmetics, and foods. Patients may develop allergic symptoms and experience repeated anaphylaxis with no known cause. Therefore, it is important to obtain a detailed medical history and individually instruct patients suspected of being allergic to PGA to avoid PGA-containing products.

Cumulative dose of epinephrine and mode of death after non-shockable out-of-hospital cardiac arrest: a registry-based study

BackgroundEpinephrine increases the chances of return of spontaneous circulation (ROSC) in out-of-hospital cardiac arrest (OHCA), especially when the initial rhythm is non-shockable. However, this drug could also worsen the post-resuscitation syndrome (PRS). We assessed the association between epinephrine use during cardiopulmonary resuscitation (CPR) and subsequent intensive care unit (ICU) mortality in patients with ROSC after non-shockable OHCA.MethodsWe used data prospectively collected in the Sudden Death Expertise Center (SDEC) registry (capturing OHCA data located in the Greater Paris area, France) between May 2011 and December 2021. All adults with ROSC after medical, cardiac and non-cardiac causes, non-shockable OHCA admitted to an ICU were included. The mode of death in the ICU was categorized as cardiocirculatory, neurological, or other.ResultsOf the 2,792 patients analyzed, there were 242 (8.7%) survivors at hospital discharge, 1,004 (35.9%) deaths from cardiocirculatory causes, 1,233 (44.2%) deaths from neurological causes, and 313 (11.2%) deaths from other etiologies. The cardiocirculatory death group received more epinephrine (4.6 ± 3.8 mg versus 1.7 ± 2.8 mg, 3.2 ± 2.6 mg, and 3.5 ± 3.6 mg for survivors, neurological deaths, and other deaths, respectively; p < 0.001). The proportion of cardiocirculatory death increased linearly (R2 = 0.92, p < 0.001) with cumulative epinephrine doses during CPR (17.7% in subjects who did not receive epinephrine and 62.5% in those who received > 10 mg). In multivariable analysis, a cumulative dose of epinephrine was strongly associated with cardiocirculatory death (adjusted odds ratio of 3.45, 95% CI [2.01–5.92] for 1 mg of epinephrine; 12.28, 95% CI [7.52–20.06] for 2–5 mg; and 23.71, 95% CI [11.02–50.97] for > 5 mg; reference 0 mg; population reference: alive at hospital discharge), even after adjustment on duration of resuscitation. The other modes of death (neurological and other causes) were also associated with epinephrine use, but to a lesser extent.ConclusionsIn non-shockable OHCA with ROSC, the dose of epinephrine used during CPR is strongly associated with early cardiocirculatory death. Further clinical studies aimed at limiting the dose of epinephrine during CPR seem warranted. Moreover, strategies for the prevention and management of PRS should take this dose of epinephrine into consideration for future trials.

The condition of newborns after the conversion of epidural analgesia to anesthesia during cesarean section: a prospective randomized study

INTRODUCTION: When performing epidural analgesia in childbirth, if surgical delivery is necessary, the question arises about the choice of further tactics of regional anesthesia. The article discusses the peculiarities of the effect of local anesthetics on the condition of a newborn during the conversion of epidural analgesia into anesthesia when caesarean section is necessary, depending on the local anesthetic used. OBJECTIVE: To assess the condition of a newborn baby during the conversion of epidural analgesia in childbirth through the natural birth canal into anesthesia during cesarean section, depending on the local anesthetic used. MATERIALS AND METHODS: A prospective randomized study of 143 children born to mothers who underwent the conversion of epidural analgesia into anesthesia for operative delivery by caesarean section was conducted. Depending on the local anesthetic used, the patients were divided into three groups, in the first group 20.0 ml of 2 % lidocaine in combination with 0.1 mg of epinephrine was injected into the epidural space, in the second group — 20.0 ml of 0.5 % bupivacaine, in the third — 20.0 ml of 0.75 % ropivacaine. The assessment of the condition of newborns was carried out on the Apgar scale at the 1st and 5th minutes of life and on the NACS scale in the first 15 minutes, 2, 24 and 72 hours after birth. RESULTS: The assessment of newborns on the Apgar scale, regardless of the local anesthetic used during epidural anesthesia at the first and fifth minutes, corresponded to 7 or more points (p &gt; 0.05). The neuropsychiatric state of newborns when assessed on the NACS scale did not differ statistically significantly in all groups and at all stages of the study. Within each group, between the study stages, the average values of the NACS scores increased statistically significantly compared to the previous one. CONCLUSIONS: The conversion of epidural analgesia in childbirth through the natural birth canal into anesthesia during cesarean section is safe for the fetus and newborn when using 20.0 ml of 2 % lidocaine in combination with 0.1 mg of epinephrine or 20.0 ml of 0.5 % bupivacaine, or 0.75 % ropivacaine in a volume of 20.0 ml.

Closed randomized comparative study of great saphenous vein crossectomy laser ablation versus standard laser technique to minimize recurrence in the treatment of primary varicose veins

Background Incompetence at the saphenofemoral junction (SF) is the most common cause (70%) of varicose veins. Endovenous laser ablation (EVLA) uses laser energy to ablate incompetent axial veins selectively and was originally described for the treatment of GSV reflux and its related varicosities. The venous system is a network of interconnected vessels; any preserved inflow of the saphenous-femoral mouth can cause postoperative recurrence. However, according to the literature, the greatest risk of recurrence is associated with the stump of the GSV of venous tributaries, including great venous trunks parallel to the GSV in the thigh. Aim of the work Comparison of the standard endovenous laser ablation technique (1.5–2 cm from SFJ) versus crossectomy ablation for the treatment of varicose veins regarding recurrence of reflux and incidence of endovenous heat-induced thrombus (EHIT) in the first week. Patients and methods In all, 80 patients admitted to Ain Shams University Hospitals and Alexandria Armed Forces Hospital from Jan. 1st, 2021 to Jan. 30th, 2023 participated in the study. The patients were divided evenly into two groups: Participants were randomly assigned to one of the trial groups using the sealed envelope method.Group A was treated by ablation of the great saphenous vein at the saphenofemoral junction (0 cm from SFJ) using 1470 nm radial double-ring diode laser fibers (ELVeS Radial 2ring™ fiber) and Biolitec Ceralas E1470/15 W laser machine. Group B was treated by ablation of the great saphenous vein at 1.5–2 cm from the saphenofemoral junction using the same laser fiber and machine. Ablation was done after putting an appropriate amount of tumescent anesthesia (500 mg lidocaine, 1 mg of epinephrine, and 12.5 mEq sodium bicarbonate added to a 1-liter solution of 0.9% normal saline). The ultrasound machine was used for the accurate placement of the laser fiber. Postoperative duplex was done on day 1, 1 week, and at 6, 12, and 18 months. Results Mean age: 39.28+/– 12.27 years in both groups; M/F: 23/17 in the first group, 20/20 in the second group. Postoperative duplex showed the absence of reflux in both groups after 1 day, after 6 months. One patient (2.5%) in group A and four patients (10%) in group B showed recurrent reflux, while recurrent refluxes were observed in one case (2.5%) in group A and five cases (12.5%) in the other group after 12 and 18 months of follow-up. One patient (2.5%) developed superficial thrombophlebitis along the course of the ablated great saphenous vein in both groups while extension to the deep veins was not detected in both groups. Conclusion Crossectomy (ablation at 0 cm at SFJ) ablation of varicose veins with 1470 radial double rings and nm diode laser with an appropriate amount of tumescent showed better results with less recurrence rate due to neovascularization or tributaries left than the standard technique of endovenous laser ablation of varicose veins (1.5–2 CM from SFJ). Along with showing a lesser incidence of thermal propagation into the deep system (EHIT) both crossectomy and standard techniques showed the same complication rate regarding venous thrombosis.

A Grade Ⅲ Severe Hypersensitivity Caused by Gadopentatic Acid Injection: A Case Report

BackgroundGadopentetic acid is a common contrast agent for enhanced magnetic resonance imaging. Adverse reactions due to gadolinium-based contrast agents are rare and easily overlooked by medical staff. A patient developed a rash as the first symptom and quickly developed a severe allergic reaction after receiving gadopentetic acid. Patient presentationA 74-year-old female patient was admitted on January 11, 2022, for femur magnetic resonance imaging. At 12:05 pm, a routine intravenous rapid injection of gadopentetic acid (15 ml) was given. Two minutes after administration, the patient developed skin itching. No obvious rash was found, but a 10 mg intravenous injection of dexamethasone was given. Recount of eventsAfter 1 minute, skin pruritus had not improved significantly, saliva secretion had increased significantly, and a general discomfort appeared. At 12:10 pm, outside the scanning room, the patient suddenly became unconscious; 1 mg of EPINEPHrine was injected intramuscularly, and oxygen was given through a mask. Heart rate, blood pressure, and oxygen saturation steadily dropped. The patient was transferred to the intensive care unit. After EPINEPHrine, norepinephrine, terlipressin, and dexamethasone treatments, the vital signs eventually stabilized. The patient was judged to have had a grade III severe allergic reaction according to the first aid guidelines for severe allergic reactions in China. The patient was discharged from the hospital on the morning of January 14. ConclusionThis case stresses the importance of being equipped with the medicines, items, supplies, and equipment needed for emergency treatments in all departments where contrast agents are used. Patients with apparently mild adverse reactions to contrast agents should not be overlooked.

How Epinephrine Administration Interval Impacts the Outcomes of Resuscitation during Adult Cardiac Arrest: A Systematic Review and Meta-Analysis.

Current guidelines for treating cardiac arrest recommend administering 1 mg of epinephrine every 3−5 min. However, this interval is based solely on expert opinion. We aimed to investigate the impact of the epinephrine administration interval (EAI) on resuscitation outcomes in adults with cardiac arrest. We systematically reviewed the PubMed, EMBASE, and Scopus databases. We included studies comparing different EAIs in adult cardiac arrest patients with reported neurological outcomes. Pooled estimates were calculated using the IVhet meta-analysis, and the heterogeneities were assessed using Q and I2 statistics. We evaluated the study risk of bias and overall quality using validated bias assessment tools. Three studies were included. All were classified as “good quality” studies. Only two reported the primary outcome. Compared with a recommended EAI of 3−5 min, a favorable neurological outcome was not significantly different in patients with the other frequencies: for <3 min, odds ratio (OR) 1.93 (95% CI: 0.82−4.54); for >5 min, OR 1.01 (95% CI: 0.55−1.87). For survival to hospital discharge, administering epinephrine for less than 3 min was not associated with a good outcome (OR 1.66, 95% CI: 0.89−3.10). Moreover, EAI of >5 min did not pose a benefit (OR 0.87, 95% CI: 0.68−1.11). Our review showed that EAI during CPR was not associated with better hospital outcomes. Further clinical trials are necessary to determine the optimal dosing interval for epinephrine in adults with cardiac arrest.

Esmolol, vector change, and dose-capped epinephrine for prehospital ventricular fibrillation or pulseless ventricular tachycardia

BackgroundRefractory ventricular fibrillation (VF) and pulseless ventricular tachycardia (pVT) cardiac arrest describes a subset of patients who do not respond to standard Advanced Cardiac Life Support (ACLS) interventions and are associated with poor outcomes. Esmolol administration and vector change defibrillation have shown promise in improving outcomes in these patients, however evidence is limited. ObjectivesThis study compares clinical outcomes between patients with prehospital refractory VF/pVT who received an Emergency Medical Service (EMS) bundle, comprised of esmolol administration, vector change defibrillation, and dose-capped epinephrine at 3 mg, to patients who received standard ACLS interventions. MethodsThis multicenter, retrospective, cohort study evaluated medical records between October 18, 2017 and March 15, 2022. Patients were enrolled if they experienced a prehospital cardiac arrest with the rhythm VF or pVT, had received at least three standard defibrillations, at least 3 mg of epinephrine, and 300 mg of amiodarone. Patients who received the EMS bundle after its implementation were compared to patients who received standard ACLS interventions prior to its implementation. The primary outcome was sustained return of spontaneous circulation (ROSC), defined as ROSC lasting 20 min without recurrence of cardiac arrest. Secondary outcomes included the incidence of any ROSC, survival to hospital arrival, survival at hospital discharge, and neurologically intact survival at hospital discharge. ResultsEighty-three patients were included in the study. Thirty-six were included in the pre-EMS bundle group and 47 patients were included in the post-EMS bundle group. Patients in the pre-EMS bundle group achieved significantly higher rates of sustained ROSC (58.3% vs 17%, p < 0.001), any ROSC (66.7% vs 19.1%, p < 0.001), and survival to hospital arrival (55.6% vs 17%, p < 0.001). The rates of survival to hospital discharge (16.7% vs 6.4%, p = 0.17) and neurologically intact survival at hospital discharge (5.9% vs 4.3%, p = 1.00) were not significantly different between groups. ConclusionsPatients who received the EMS bundle achieved sustained ROSC significantly less often and were less likely to have pulses at hospital arrival. The incidence of neurologically intact survival was low and similar between groups.

Comparison of Various Local Anesthetics During Conversion of Epidural Analgesia in Childbirth to Anesthesia During Cesarean Section

The objective: to estimate efficiency of local anesthetics in the conversion of epidural analgesia during physiological childbirth into anesthesia for emergency surgery for delivery.Subjects and Methods: A randomized prospective study was conducted. The patients were divided into three groups depending on the local anesthetic being used. In the first group (n = 49), 2% solution of lidocaine was administered in combination with 0.1 mg of adrenaline, in the second group (n = 48) – 0.5% bupivacaine, in the third group (n = 46) ‒ 0.75% ropivacaine. The study evaluated the onset rate, level, duration of the sensorimotor block, the severity of the pain syndrome, and revealed the frequency of unsuccessful conversion.Results: In the 1st group, the conversion was not success in 16.3% of women, in the 2nd group ‒ in 14.6%, and in the 3rd ‒ 10.9% of cases, due to that general anesthesia was used. When assessing the pain syndrome, the minimum score on the VAS scale 3 hours after surgery was observed with ropivacaine use. The fastest sensory block developed when using 2% lidocaine solution in combination with adrenaline. The motor block preserved for the longest time after administration of bupivacaine, in this regard, patients from the 2nd group began to activate later.Conclusions. The use of 0.5% bupivacaine solution as a local anesthetic during the conversion of epidural analgesia into anesthesia provides a sufficient level of anesthesia that allows surgical intervention. However it is accompanied by a more pronounced motor block, and it has a negative effect on the early activation of maternity patients in the postoperative period. The use of 0.75% solution of ropivacaine hydrochloride provides the most favorable conditions for operative delivery which is confirmed by low estimates of the intensity of pain on the VAS scale, both immediately before surgery and three hours after surgery, the minimum time from the moment of induction to the incision of the skin, ensuring adequate sensory block, the absence of pronounced motor block, and early activation of maternity patients.

Accumulated Epinephrine Dose is Associated With Acute Kidney Injury Following Resuscitation in Adult Cardiac Arrest Patients.

The goal of this study was to investigate the association between total epinephrine dosage during resuscitation and acute kidney injury after return of spontaneous circulation in patients with cardiac arrest. We performed a secondary analysis of previously published data on the resuscitation of cardiac arrest patients. Bivariate, multivariate logistic regression, and subgroup analyses were conducted to investigate the association between total epinephrine dosage during resuscitation and acute kidney injury after return of spontaneous circulation. A total of 312 eligible patients were included. The mean age of the patients was 60.8 ± 15.2 years. More than half of the patients were male (73.4%) and had an out-of-hospital cardiac arrest (61.9%). During resuscitation, 125, 81, and 106 patients received ≤2, 3 - 4, and ≥5 mg epinephrine, respectively. After return of spontaneous circulation, there were 165 patients (52.9%) and 147 patients (47.1%) with and without acute kidney injury, respectively. Both bivariate and multivariate analysis showed a statistically significant association between total epinephrine dosage and acute kidney injury. The subgroup analysis showed that the strength of the association between epinephrine dosage and acute kidney injury varied by location of cardiac arrest. Further multivariate regression analysis found that the association between epinephrine dosage and acute kidney injury was only observed in patients with in-hospital cardiac arrest after adjusting for multiple confounding factors. Compared with in-hospital cardiac arrest patients who received ≤2 mg of epinephrine, patients with 3–4 mg of epinephrine or ≥5 mg of epinephrine had adjusted odds ratios of 4.2 (95% confidence interval 1.0–18.4) and 11.3 (95% confidence interval 2.0–63.0), respectively, to develop acute kidney injury. Therefore, we concluded that a higher epinephrine dosage during resuscitation was associated with an increased incidence of acute kidney injury after return of spontaneous circulation in adult patients with in-hospital cardiac arrest.

Determination of the Maximum Nonlethal Dose of Lidocaine and Epinephrine Based on Subcutaneous Injection in Rabbits

Background: The objective of the present study was to determine the maximum nonlethal dose of epinephrine, lidocaine, and both substances diluted in saline subcutaneously injected in rabbits. Methods: The animals were divided into three groups. The first group received a maximum dose of subcutaneous epinephrine diluted in 30mL of saline with decreasing doses of epinephrine: 10.01mg/kg, 7.25mg/kg, 5.32mg/kg, 2.51mg/kg, 1.85mg/kg, 2.8mg/kg, and 1.21mg/kg. The second group received 30mL of saline with decreasing doses of lidocaine 250, 200, 150, 125, 100, 75, and 50mg/kg, respectively. The animals were observed from 48 hours to 7 days after receiving the injection. The third group also received 30mL of saline containing a fixed dose of 0.03mg of epinephrine and the same decreasing doses of lidocaine as the second group. After receiving the injection, the animals were observed for 48 hours for adverse reactions, death, and absence of vital signs. Results: In the first group, the dose of 1.21mg/kg of epinephrine has proved to be nonlethal. In the second group, a dose of 50mg/kg of lidocaine subcutaneously injected to rabbits caused neither visible reactions nor death. Finally, in the third group, lidocaine plus epinephrine at a dose of 75mg/kg plus 0.03mg in the saline did not cause visible reactions or death. Conclusion: Lidocaine injected into the subcutaneous tissue of rabbits at a dose of 50mg/kg did not cause visible reactions or death.

Abstract 13761: Does Targeted Temperature Management Modify the Association Between Increasing Epinephrine Dose and Survival Outcomes Following Out-of-Hospital Cardiac Arrest?

Introduction: Epinephrine (EPI) improves return of circulation after out of hospital cardiac arrest (OHCA). These beneficial cardiac effects are not accompanied by improved neurological survival possibly due to EPI induced microvascular effects and critical brain ischemia. We hypothesized that these dose-dependent adverse EPI effects may be mitigated by targeted temperature management (TTM) such that the relative benefit of TTM is greater at higher EPI doses. Methods: This was a retrospective cohort study of adult non-traumatic OHCA patients in Seattle and King County, Washington from 2008-2018, who were unconscious at hospital admission. We used logistic regression to assess the relationship among EPI dose, TTM, and survival to hospital discharge, and survival with favorable neurological status (Cerebral Performance Category (CPC) 1 or 2). The model evaluated whether TTM modified the association of increasing EPI dose using an interaction term between TTM and EPI dose. Results were stratified by initial shockable vs non-shockable rhythm. Results: Of 5254 eligible patients, the median EPI dose was 2.0 mg (IQR 1.0 - 3.0); 3052 (58%) received TTM. In all, 2177 (41%) survived to discharge, and 1889 (36%) survived with CPC 1-2. Increasing dose of EPI was associated with a decreasing likelihood of survival (OR 0.58, [95% CI 0.55-0.61] for each additional mg of EPI) and CPC 1-2 (OR 0.56, [0.53-0.59]). The dose-dependent EPI association was modified by TTM. After adjustment for Utstein covariates, for each additional mg of EPI, TTM was associated with a relative stepwise improvement in odds of survival (interaction OR 1.35, [1.23, 1.49]) and CPC 1-2 (OR 1.34, [1.21, 1.50]) (Figure). This interaction was consistent among shockable and non-shockable OHCA (Figure). Conclusions: We observed an interaction between TTM and EPI dose such that the beneficial association of TTM increased with increasing EPI dose, suggesting TTM may attenuate the adverse effects of higher dose EPI.

Resuscitation After Cardiac Surgery Awareness an Egyptian Multicentre Survey

Abstract Introduction There has been an increasing recognition that cardiac surgery patients have different resuscitative needs than other medical and surgical patients who experience in-hospital cardiac arrest. This was addressed in the 2010 European Resuscitation Council Guidelines and the 2010 American Heart Association Guidelines. However, it’s unknown how widely the guidelines are practiced, or a training protocol is followed in different units in Egypt. Objectives This national survey aims to identify the views and common practice of Egyptian cardiac teams regarding resuscitation after cardiac surgery. Methods A 21-question survey is created based on a prior survey used by the EACTS guidelines committee. Questions included the following topics: Participants demographics, Prevalence of cardiac arrest in the intensive care unit, Cardiac arrest with ventricular fibrillation or non-shockable rhythm, Emergency resternotomy technique, Training and arrest protocols. Survey dissemination was through social media platforms, mobile messaging applications and emails during the time period between November 2020 and January 2021. Results Of 126 responses, 95 were suitable for inclusion. Responses were from 11 centres across Egypt. 68.5% of the respondents were surgeons while cardiac anaesthetists and intensivists formed 12.6% and 18.9% respectively. 76.8% of participants were middle-grade doctors, consultant participation was 23.2%. The median annual number of cases performed in the units was 480 and this ranged from 10 to 3000. The average percentage of cardiac arrests was 7%, Median survival to hospital discharge of all arrests was 33% For patients who go into VF after cardiac surgery, respondents would attempt a mean of 5 shocks with only 24.2% commencing defibrillation shocks before external cardiac massage, while the majority initiating CPR immediately. They would perform emergency resternotomy in a mean time of 12 mins and in 15 mins if the rhythm was not shockable. 56.8% would give 1 mg of adrenaline as soon the cardiac arrest was established, only 6.3% thought that it should be given rarely or not at all. If a surgeon was not immediately available 36.8% of respondents would be happy for any trained personnel to perform the emergency resternotomy while 58.9% expect only the surgeon to perform the resternotomy. 49.4% of the participants have not practised any training to perform an emergency sternotomy. 41% of the respondents state they occasionally practice or talk with the staff about it. Only 9.5% practice regularly on emergency sternotomies. 25% assume current training is enough and does not need modification, while 75% think tailored training is important and staff should be oriented about it in the future. Conclusion An action plan is required to improve the awareness of the junior surgeons with the Cardiac Advanced Life Support Protocol. Proper training of the intensive care staff to implement the protocol in a timely organised manner is needed. Assessment of the rhythm before starting external chest compressions is the corner stone in cardiac patients undergoing cardiac arrest. VF/pVT rhythm, 3 defibrillation shocks are given first; for the non- shockable rhythm, the emergency pacing switched on, this is followed by compressions till resternomtomy. Emergency resternotomy under 5 minutes is the only effective way to save patients with tamponade and extreme hypovolemia.

Medical Image of the Month: Stercoral Colitis

No abstract available. Article truncated after 150 words. A 78-year-old- man with cerebral palsy requiring an in-home caregiver presented to the emergency room in hypovolemic shock post-sudden cardiac arrest in the setting of hematemesis. The caregiver noticed the patient become unresponsive after having one episode of bright red emesis. EMS arrived and found the patient to be pulseless and performed three rounds of CPR and gave 1 mg of epinephrine before return of spontaneous circulation was obtained. The caregiver reported the patient had been complaining of diarrhea for the past few days after being started on magnesium citrate for constipation by his PCP. In the ED patient was intubated, sedated, and started on pressors due to undifferentiated shock. CT abdomen pelvis demonstrated diffuse dilation of the colon with massive stool burden and markedly distended rectum with impacted stool and circumferential rectal wall thickening consistent with stercoral colitis (Figures 1 and 2). In addition, there was a large hiatal …

Impact of Total Epinephrine Dose on Long Term Neurological Outcome for Cardiac Arrest Patients: A Cohort Study.

Introduction: Although epinephrine is universally acknowledged to increase return of spontaneous circulation (ROSC) after cardiac arrest, its balanced effects on later outcomes remain uncertain, causing potential harm during post-resuscitation phase. Recent studies have questioned the efficacy and potential deleterious effects of epinephrine on long-term survival and neurological outcomes, despite that the adverse relationship between epinephrine dose and outcome can be partially biased by longer CPR duration and underlying comorbidities. This study explored the long-term effect of epinephrine when used in a cohort of patients that underwent cardiac arrest during cardiopulmonary resuscitation. Methods: The data were originally collected from a retrospective institutional database from January 2007 to December 2015 and are now available on Dryad (via: https://doi.org/10.5061/dryad.qv6fp83). Use of epinephrine was coded by dose (<2 mg, 2 mg, 3–4 mg, ≥5 mg). A favorable neurological outcome was defined using a Cerebral Performance Category (CPC) 1 or 2. The association between epinephrine dosing and 3-months neurological outcome was analyzed by univariate analysis and multivariate logistic regression. Results: Univariate and multivariate analysis demonstrated a negative association between total epinephrine dose and neurological outcome. Of the 373 eligible patients, 92 received less than 2 mg of epinephrine, 60 received 2 mg, 97 received 3–4 mg and 124 received more than 5 mg. Compared to patients who received less than 2 mg of epinephrine, the adjusted odds ratio (OR) of a favorable neurological outcome was 0.8 (95% confidence interval [CI]: 0.38–1.68) for 2 mg of epinephrine, 0.43 (95% confidence interval [CI]: 0.21–0.89) for 3–4 mg of epinephrine and 0.40 (95% confidence interval [CI]: 0.17–0.96) for more than 5 mg of epinephrine. Conclusion: In this cohort of patients who achieved ROSC, total epinephrine dosing during resuscitation was associated with a worse neurological outcome three months after cardiac arrest, after adjusting other confounding factors. Further researches are needed to investigate the long-term effect of epinephrine on cardiac arrest patients.

Favorable Course after a Second Infusion of Antivenin Using Premedication

An 80-year-old woman had suffered a mamushi bite to the left hand 3 days ago and visited a local hospital. She was admitted for observation but received only tetanus toxoid, antibiotic and cepharanthine. Physicians hesitated to administer antivenin due to the risk of severe side effects, as she had previously received antivenin for mamushi bite at 50 years old. On the third day, the swelling had reached her left chest (grade V), so she was transferred to our hospital via ambulance. She had two bite wounds from a mamushi on her left hand and showed swelling with subcutaneous hemorrhaging from the finger to her chest and upper back. Chest computed tomography showed left pleural effusion. She underwent infusion of mamushi antivenin after premedication using a subcutaneous injection of 0.3 mg of adrenaline and drip infusion of 10 mg of chlorpheniramine, 20 mg of famotidine and 100 mg of hydrocortisone. She was not complicated with an anaphylactic reaction. After the infusion of the antivenin, her swelling and pleural infusion gradually improved, so she discharged on the seventh hospital day. Even after discharge, she showed no complication with serum sickness. This case showed a favorable course after a second infusion of antivenin using premedication. As there have been few reports of multiple infusions of antivenin for the same patient, a further analysis with the accumulation of similar cases is necessary.

Abstract 16068: Local Anesthesia Using the “Tumescent Technique” versus General Anesthesia for Subcutaneous-implantable Cardioverter Defibirllator Implantation: Description of a Novel Technique

Introduction: General anesthesia is routinely used during the implantation of S-ICD which dramatically prolongs total procedure time, patient recovery time and adds unnecessary potential complications. The tumescent local anesthesia (TLA) technique provides anesthesia of large areas of skin and subcutaneous tissue by means of the direct infiltration of large volumes of a dilute local anesthetic solution into subcutaneous fat. Hypothesis: TLA during S-ICD implantation is feasible and associated with a reduction in total procedure time. Methods: A retrospective analysis was conducted in two medical centers during 2019. Five patients underwent S-ICD with TLA due to baseline conditions that represented relative contraindications to general anesthesia (e.g, muscular dystrophy). A large volume of a local anesthesia solution (i.e., 1 liter of normal saline, 30 cc of 1% lidocaine, 30 cc of bupivacaine, 1 mg of epinephrine, 12.5 mEq of sodium bicarbonate) was used in each patient and injected 10 minutes prior to incisions. Five other patients who underwent S-ICD under general anesthesia served as controls. The skin-to-skin time, total length of procedure and post-procedural pain levels were compared between groups. Results: A total of 10 patients were included (male: 60%; mean age: 62 ± 16). All devices were implanted for primary prevention of sudden cardiac death. TLA was considered the best anesthetic approach in five patients who had medical conditions that represented a high risk of complications if general anesthesia was employed. In the group of TLA, an average of 260 ± 45 cc was administered. The skin-to-skin times were 44.8 ± 13.9 minutes in patients who underwent general anesthesia vs. 46.2 ± 14.3 minutes in TLA (p = 0.3). The total procedural time was 148 ± 28 min vs 64.2 ± 13.4 min (p &lt;0.001) for general anesthesia and TLA, respectively. There was a significant difference between groups in pain scale following the procedure being better pain control with TLA. Conclusions: S-ICD implantation using TLA appears to be a feasible and safe option in patients with contraindications to general anesthesia. This technique significantly decreases total procedure time with better post-procedural pain control.

Effect of cocktail therapy after arthroscopic rotator cuff repair: a randomized, double-blind trial

We investigated the effectiveness of cocktail therapy after arthroscopic rotator cuff repair (ARCR). We evaluated 128 shoulders undergoing ARCR and used block randomization to divide patients into 2 groups in this double-blind trial: The cocktail group received 20 mL of 0.75% ropivacaine, 5 mg of morphine, 0.3 mg of epinephrine, 2 mg of betamethasone, and saline solution to a total of 42 mL, whereas the control group received 20 mL of 0.75% ropivacaine and saline solution to a total of 42 mL. Postoperatively, one of the drug mixtures was injected into the glenohumeral joint, subacromial bursa, suprascapular nerve, and anterior, middle, and posterior parts of the deltoid muscle according to the treatment group. We recorded patients' visual analog scalescores preoperatively and at 4, 8, 16, 24, and 48 hours postoperatively; the number of patients using postoperative diclofenac suppositories and buprenorphine hydrochloride; the number of patients experiencing nausea; the number of patients with infection and delayed wound healing as adverse effects; the surgery time; the retear rate; and passive shoulder range of motion. The cocktail group constituted 64 shoulders (50.0%), with 39 men (60.9%)and 25 women (39.1%); the mean age was 64.2 ± 10.2 years. The control group constituted 64 shoulders (50.0%), with 41 men (64.1%) and 23 women (35.9%); the mean age was 65.2 ± 7.5 years. We found no significant difference in age or sex between the 2 groups. There was also no significant difference in rotator cuff tear size or surgery time between the 2 groups. The visual analog scale scores at 8, 16, and 24 hours postoperatively were significantly lower in the cocktail group. The number of patients using suppositories was also significantly lower in the cocktail group. The number of patients receiving buprenorphine injections tended to be lower in the cocktail group, but the difference was not significant. Nausea occurred in 6.3% of patients in the cocktail group and 15.6% in the control group, but the difference was not significant. No infection or delayed wound healing occurred in either group. There was no significant difference in the retear rate between the 2 groups. Passive anterior elevation at 3 months postoperatively was significantly better in the cocktail group than in the control group. We compared cocktail therapy and ropivacaine after ARCR and found no difference in results except for VAS score at 8, 16, and 24 hours postoperatively and frequency of postoperative suppository use without an apparent risk of infection or a detrimental effect on tendon healing.