Accessing Photoredox Transformations with an Iron(III) Photosensitizer and Green Light.

Efficient excited-state electron transfer between an iron(III) photosensitizer and organic electron donors was realized with green light irradiation. This advance was enabled by the use of the previously reported iron photosensitizer, [Fe(phtmeimb)2]+ (phtmeimb = {phenyl[tris(3-methyl-imidazolin-2-ylidene)]borate}, that exhibited long-lived and luminescent ligand-to-metal charge-transfer (LMCT) excited states. A benchmark dehalogenation reaction was investigated with yields that exceed 90% and an enhanced stability relative to the prototypical photosensitizer [Ru(bpy)3]2+. The initial catalytic step is electron transfer from an amine to the photoexcited iron sensitizer, which is shown to occur with a large cage-escape yield. For LMCT excited states, this reductive electron transfer is vectorial and may be a general advantage of Fe(III) photosensitizers. In-depth time-resolved spectroscopic methods, including transient absorption characterization from the ultraviolet to the infrared regions, provided a quantitative description of the catalytic mechanism with associated rate constants and yields.

Diffuse idiopathic varices in the colon characterized by lower gastrointestinal bleeding.

Colon varices are very rare lesions that usually present as secondary to portal hypertension. Idiopathic colon varices are even rarer, and should be considered especially in the etiology of massive lower gastrointestinal bleeding. Forty-five year old male presented to our hospital with complaints of recurrent rectal bleeding for one week and severe anemia. The patient was transfused with 4 units of blood. His colonoscopy revealed diffuse submucosal varices. The tests performed for investigation of etiology did not reveal any portal pathology. The patient did not experience another episode of active bleeding during follow-up and was discharged with conservative recommendations. Idiopathic colon varices are rare but should be considered in the differential diagnosis of patients presenting with massive rectal bleeding. Conservative approach is first line of treatment, reserving segmental or total colectomy only for ongoing hemorrhage.

The efficacy of oral glutamine in prevention of acute radiotherapy-induced esophagitis in patients with lung cancer.

AIM OF THE STUDY: This study explores the efficacy of oral glutamine in the prevention of acute radiotherapy-induced esophagitis in patients with lung cancer who are treated with thoracic radiotherapy. MATERIAL AND METHODS: This study was planned as a retrospective randomized experimental study. Forty-six patients with lung cancer, who were treated and kept under control between January 2008 and January 2010, were included in the study by the Department of Radiation Oncology, Faculty of Medicine, Dicle University. The patients were divided into two groups. The first group (n = 21) was given prophylactic oral powder glutamine (daily 30 g), while the second group (n = 25) was not given oral glutamine. RESULTS: There were 21 patients in Group 1 (45.7%) and 25 patients in Group 2 (54.3%). No significant statistical difference was observed between the two groups in terms of age, gender, stage, histopathological type, treatment choice, received radiation doses, esophagus length in RT field, or location of the tumor (p > 0.05). A significant statistical difference was observed between the glutamine-supplemented group (first group) and the glutamine-free group (second group) according to the grade of esophagitis (p < 0.0001). CONCLUSIONS: In our retrospective randomized experimental study, we determined that the severity of acute radiotherapy-induced esophagitis might be decreased with oral glutamine in patients with lung cancer who were treated with thoracic radiotherapy.

Harnessing Sulfur(VI) Fluoride Exchange Click Chemistry and Photocatalysis for Deaminative Benzylic Arylation.

While among the most common functional handles present in organic molecules, amines are a widely underutilized linchpin for C-C bond formation. To facilitate C-N bond cleavage, large activating groups are typically used but result in the generation of stoichiometric amounts of organic waste. Herein, we report an atom-economic activation of benzylic primary amines relying on the Sulfur(VI) Fluoride Exchange (SuFEx) click chemistry and the aza-Ramberg-Bäcklund reaction. This two-step sequence allows the high-yielding generation of 1,2-dialkyldiazenes from primary amines via loss of SO2. Excitation of the diazenes with blue light and an Ir photocatalyst affords radical pairs upon expulsion of N2, which can be coaxed into the formation of C(sp3)-C(sp2) bonds upon diffusion and capture by a Ni catalyst. This arylative strategy relying on a traceless click approach was harnessed in a variety of examples and its mechanism was investigated.

Effects of various enteral nutrition solutions on bacterial translocation and intestinal morphology during the postoperative period.

Bacterial translocation is the passage of bacteria or endotoxins from the gastrointestinal tract to extraintestinal sites, such as mesenteric lymph nodes, liver, spleen, and bloodstream. In this study, the investigators examined the effects of various enteral nutrients on bacterial translocation and intestinal morphology during the postoperative period. Sixty rats were randomly divided into 5 groups, each of which included 12 animals; cecal mobilization was performed in all groups. Group I rats were fed rat chow and water; group II was given standard enteral nutrients; group III, high-energy enteral nutrients; group IV, enteral nutrients supplemented with fiber; and group V, immunonutrients. Bacterial translocation was detected in mesenteric lymph nodes, spleen, liver, and blood cultures. Changes in the terminal ileum were scored from 0 to 4 with the morphologic scoring system. Bacterial translocation was predominantly detected in mesenteric lymph nodes. Rats fed immunonutrients (group V) showed a significant reduction in bacterial translocation compared with other groups. Although minor morphologic alterations in the villi were observed in groups IV and V, the histologic scores of these groups were not statistically different from the scores of control group members. In the present study, investigators evaluated the effects of various enteral nutritional solutions on bacterial translocation and intestinal morphology during the postoperative period. Enteral diets supplemented with arginine, nucleotides, and omega-3 fatty acids were found to reduce bacterial translocation. The investigators concluded that this effect might be related to improvement in immune function resulting from the use of immunonutrients.

Left Inguinal Bladder Hernia that Causes Dilatation in the Ureter.

The scrotal bladder hernia is a rare condition that may present as scrotal swelling and urinary system obstruction or infection symptoms. Diagnosis of this condition before the operation decreases the severe complications like bladder injury during operation. In this article, a 75-year-old man presented to our clinic with right inguinal swelling and lower urinary system infection. Inguinal bladder hernia was diagnosed after performing a computed tomography. The hernia was repaired without any complications.

Where should the damage control surgery be performed, at the nearest health center or at a fully equipped hospital?

BACKGROUND: Transport of casualties from a combat area to a fully equipped hospital where all techniques of damage control surgery (DCS) can be performed requires a great deal of time. Therefore, prior to transport, prompt control of hemorrhage and contamination should be achieved, and resuscitative procedures should be performed at the nearest health center. The aim of the present study was to investigate the effect of the location at which DCS was performed on rates of mortality. METHODS: The present retrospective study included 51 combat casualties who underwent DCS at the present clinic or at hospitals nearest the combat area due to high kinetic energy gunshot injuries to the abdomen between 2010 and 2015. Patients were evaluated in terms of acidosis, hypothermia, coagulopathy, and mortality. RESULTS: Patients were divided into 2 groups depending on the location where the first step of DCS was performed: (1) at the present hospital or (2) at other hospitals. Group 1 comprised 26 patients (51%), and Group 2 comprised 25 (49%). Total mortality occurred in 23 (45.1%) patients, including 15 (57.7%) patients in Group 1 and 8 (32%) in Group 2. In Group 1, mean time from injury to hospital admission was longer, and deep acidosis, hypothermia, and coagulopathy were more marked. CONCLUSION: Initial surgical control of hemorrhage and contamination in patients injured by high kinetic gunshots should be promptly achieved at the nearest health center. In this way, acidosis, hypothermia, and coagulopathy can be prevented, and the risk of mortality can be reduced.

The Analysis of Mean Platelet Volume and Platelet Distribution Width Levels in Appendicitis.

We aimed to analyze the diagnostic value of mean platelet volume and platelet distribution width, which are also known as the markers of platelet count, in acute and perforated appendicitis. The data of 202 patients who applied to general surgery clinic in Mustafa Kemal University Hospital from 2007 to 2012 with acute appendicitis were analyzed retrospectively. The findings were separated to two groups due to the perforation status (perforated vs. non-perforated). Age, sex, leukocyte, hemoglobin, hematocrit, mean platelet volume, and platelet distribution width were examined. The mean age of the patients was 35.8. Twenty-one of all cases were perforated appendicitis (10.4 %), and the rest was acute appendicitis (non-perforated) (n = 181, 89.6 %). The mean platelet volume value was 9.8 ± 2.1 fL; mean thrombocyte count, 340.9 × 10(9)/L; and mean platelet distribution width value, 18.3 %. There were statistically significant differences between sex and age, hemoglobin, hematocrit, leukocyte, mean platelet volume, and platelet distribution width. There was a positive correlation between mean platelet volume, platelet distribution width, and platelet. Age, leukocyte, platelet, mean platelet volume, and platelet distribution width were higher in cases with perforation as a comparison with non-perforated cases. We think that mean platelet volume and platelet distribution width may be valuable markers to detect the risk of perforation in early periods of acute appendicitis.

Sickle cell diseases and ileus.

BACKGROUND: We tried to understand whether or not there is an increased incidence of ileus in patients with sickle cell diseases (SCDs). METHODS: All cases with SCDs were taken into the study. RESULTS: The study included 325 patients (160 females). The mean ages were similar in both sexes (29.3 versus 29.8 years in females and males, respectively, p > 0.05). Incidence of ileus was higher in males, significantly (3.6% versus 1.2%, p < 0.01). All of the ileus cases were able to be treated with simple and repeated red blood cell (RBC) transfusions without any surgical procedure. Smoking was higher in males, too (21.8% versus 6.2%, p < 0.001). The mean hematocrit value was also higher in males, significantly (24.4% versus 23.0%, p = 0.016). RBC units transfused, digital clubbing, leg ulcers, pulmonary hypertension, chronic obstructive pulmonary disease, coronary heart disease, and chronic renal disease were all higher in males, too (p < 0.05 for all). On the other hand, although the general mortality, white blood cell and platelet counts of peripheric blood, painful crises per year, rheumatic heart disease, avascular necrosis of bone, cirrhosis, and stroke were all higher in males, the differences were nonsignificant probably due to the small sample sizes of the groups (p > 0.05 for all). CONCLUSION: Although the relatively young mean ages of the patients with SCDs, the very high incidences of ileus are probably due to the strong atherosclerotic and obstructive natures of the two pathologies, and ileus should be treated with simple and repeated RBC transfusions to restore bowel perfusion in such patients.

Effect of radioactive iodine therapy on lacrimal gland functions in patients with hyperthyroidism.

BACKGROUND: Radioactive iodine (RAI) therapy is preferred in the treatment of hyperthyroidism because of its effectiveness, noninvasiveness, and low costs. I has been detected in extrathyroidal tissues, such as in gastric mucosa, salivary glands, and lacrimal glands. To the best of our knowledge, there is no publication concerning the effects of RAI therapy for hyperthyroidism on tear production. In the present study, we evaluated whether or not the lacrimal glands are affected after RAI therapy when compared with pretreatment period. METHODS: The Schirmer and tear break-up time (TBUT) tests were used to assess 32 eyes of 16 patients with conditions that were diagnosed as hyperthyroidism before and at 3 and 6 months after RAI treatment. In addition, pretreatment values of patients were compared with that of controls. It was evaluated whether or not a correlation exists between the results and the dose or iodine uptake values. RESULTS: There was no significant difference between pretreatment values of Schirmer and TBUT tests obtained in the patient group and those of the control group (P > 0.05). In the patient group, there was a significant difference between the posttreatment and pretreatment values (P < 0.05). There was a positive correlation between uptake values obtained at 24 hours and the values obtained by TBUT and Schirmer tests on both eyes at 3 and 6 months. At 6 months, the uptake value at 24 hours was 28.83 ± 60 for both eyes in patients with TBUT test values less than 10, whereas it was 39.25 ± 7.88 for the right eye and 39.00 ± 6.85 for the left eyes in patients with TBUT test values greater than 10. The difference was statistically significant (P < 0.05). CONCLUSIONS: In our study, we concluded that the decrease in mucin and aqueous production occurs due to affected lacrimal glands by RAI therapy; however, this effect is not dose dependent.

Acute chest syndrome in severity of sickle cell diseases.

BACKGROUND: Sickle cell diseases (SCDs) are chronic inflammatory processes on capillary level. We tried to understand whether or not there are some positive correlations between acute chest syndrome (ACS) and severity of SCDs. METHODS: All patients with the SCDs were taken into the study. RESULTS: The study included 337 cases (167 females). There were 15 patients (4.4%) with the ACS. The mean ages were similar in both groups (29.4 versus 29.7 years in the ACS group and other, respectively, P > 0.05). The female ratios were similar in both groups, too (60.0% versus 49.0%, respectively, P > 0.05). Additionally, prevalences of associated thalassemia minors were similar in them (66.6% versus 65.5%, respectively, P > 0.05). Smoking was higher in the ACS group (20.0% versus 13.9%), but the difference was nonsignificant (P > 0.05). Although the mean white blood cell count and hematocrit value of peripheric blood were higher in the ACS group, the mean platelet count was lower in them, but the differences were nonsignificant again (P > 0.05 for all). On the other hand, although the painful crises per year, tonsilectomy, priapism, ileus, digital clubbing, pulmonary hypertension, rheumatic heart disease, cirrhosis, stroke, and mortality were higher in the ACS group, the difference was only significant for the stroke (P < 0.05), probably due to the small sample size of the ACS group. CONCLUSION: SCDs are chronic destructive processes on capillaries iniatiating at birth, and terminate with early organ failures in life. Probably ACS is one of the terminal consequences of the inflammatory processes that may indicate shortened survival in such patients.

Efficacy of resuscitation with Intralipid in a levobupivacaine-induced cardiac arrest model.

AIM: Cardiac toxicity due to the administration of local anesthetics may be fatal. In this study, we evaluated the efficacy of a 20% lipid solution combined with epinephrine in a levobupivacaine-induced cardiac arrest model. MATERIALS AND METHODS: A total of 14 New Zealand rabbits were sedated and mechanically ventilated. Asystole was induced with intravenous levobupivacaine injection. The rabbits were randomized into groups receiving the same volume of either 0.9% saline (CR group) or a 20% lipid solution (LE group) along with a 100 µg/kg epinephrine bolus, which were administered immediately upon asystole. Standard advanced cardiac life support protocols were performed. RESULTS: Four subjects in the LE group as well as 3 subjects in the CR group had a spontaneous recovery (P = 0.592). In the 20th minute after arrest, 3 subjects in the LE group had maintained spontaneous circulation, while there was only 1 subject from the CR group with the same outcome. CONCLUSION: We found that adding a lipid solution to epinephrine for the resuscitation of rabbits that underwent levobupivacaine- induced cardiac arrest increased recovery rates of circulation and therefore the likelihood of survival. Further studies are needed to develop clinical therapies for the systemic toxicity of local anesthetics.

Comparison of surgical procedures and percutaneous drainage in the treatment of liver hydatide cysts: a retrospective study in an endemic area.

INTRODUCTION: Surgical procedures are still the golden standard option in the treatment of liver cystic echinococcosis. However, minimal invasive technics like percutaneous drainage are rising trends. We aimed to compare the efficacy of surgical and percutaneous options in the treatment of liver hydatidosis in an endemic area. METHODS: Patients who underwent surgical or percutaneous procedures for hydatid disease between January 2007 and December 2012 were retrospectively evaluated. Recurrence rates, hospital stay time, and related factors were analyzed. RESULTS: There were 44 (35.5%) male and 80 (64.5%) female patients in this study. Eighty two patients (Group I) had undergone surgery (66.1%) and 42 patients (Group II) had undergone percutaneous drainage (33.9%). The mean cyst size was 7.28 ± 2.51 cm in Group I and 8.76 ± 3.30 cm in Group II. Nine recurrences (7.3%) were detected during study. Five of the recurrences were in Group II (11.9%) and four (4.9%) of them were in Group I. The mean length of hospital stay of all patients was 5.42 ± 3.16 days. DISCUSSION: Percutaneous drainage techniques can be a good alternative to surgery in selected patients. In complicated cases like cystobiliary fistula, surgery is superior to percutaneous approaches. The hospital stay time, recurrence rate and postoperative complications were not enhanced when compared to percutaneous treatment in our study. Despite all controversy about the low morbidity after percutaneous treatment, surgical approach is still a preferable option in patients with liver hydatidosis when it is performed by experienced surgeons.

[The development of ventricular fibrillation due to etomidate for anesthetic induction: a very rare side effect, case report]. / Desenvolvimento de fibrilação ventricular por causa de etomidato para indução anestésica: um efeito colateral muito raro, relato de caso.

BACKGROUND AND OBJECTIVES: Ventricular fibrillation occurring in a patient can result in unexpected complications. Here, our aim is to present a case of ventricular fibrillation occurring immediately after anesthesia induction with etomidate administration. CASE REPORT: A fifty-six-year-old female patient with a pre-diagnosis of gallstones was admitted to the operating room for laparoscopic cholecystectomy. The induction was performed by etomidate with a bolus dose of 0.3mg/kg. Severe and fast adduction appeared in the patient's arms immediately after induction. A tachycardia with wide QRS and ventricular rate 188beat/min was detected on the monitor. The rhythm turned to VF during the preparation of cardioversion. Immediately we performed defibrillation to the patient. Sinus rhythm was obtained. It was decided to postpone the operation due to the patient's unstable condition. CONCLUSION: In addition to other known side effects of etomidate, very rarely, ventricular tachycardia and fibrillation can be also seen. To the best of our knowledge, this is the first case regarding etomidate causing VF in the literature.

Thyroid hemiagenesis, ectopic submandibular thyroid tissue, and apparent persistent subclinical thyrotoxicosis.

BACKGROUND: Ectopic thyroid tissue (ETT) is a rare embryological abnormality characterized by the occurrence of thyroid tissue in a site other than its usual location. Thyroid hemiagenesis (HA) is also a very rare abnormality in which one thyroid lobe does not develop properly during embryology. We report a patient with left HA, submandibular ETT, and persistent mildly suppressed serum thyrotropin (TSH). PATIENT: A 38-year-old female patient was admitted with complaints of sweating and palpitations. She had no symptoms of neck compression. Thyroid ultrasonography revealed heterogeneity and hypoechogenicity of the right lobe and absence of the left lobe, the latter being confirmed by computed tomography. There was no ETT in the neck. A thyroid Tc-99m pertechnetate scan demonstrated two distinct areas of radiotracer uptake, one in the right lobe of the thyroid gland and one in the right submandibular region and lobe, but no uptake in the left thyroid bed. The serum free triiodothyronine was 2.89 pg/mL (2.5-3.9 pg/mL), and the serum free thyroxine was 0.86 ng/dL (0.61-1.12 ng/mL). The serum TSH was 0.11 mIU/L (0.34-5.60 mIU/L). CONCLUSIONS: This may be the first reported patient with HA and submandibular ETT. The patient probably also had thyroiditis with mild intermittent thyrotoxicosis based on her suppressed TSH and ultrasonography imaging of the right thyroid lobe.

Addition of ketamine to propofol-alfentanil anesthesia may reduce postoperative pain in laparoscopic cholecystectomy.

OBJECTIVE: The aim of this study was to assess whether intravenous anesthesia supplemented with ketamine reduces postoperative pain after elective laparoscopic cholecystectomy. MATERIALS AND METHODS: Forty patients were enrolled and randomized 1:1 into one of 2 groups: the propofol group (received propofol and alfentanil supplemented with saline) and the ketamine group (received propofol and alfentanil with ketamine). The study was double-blind. The number and amount of the intraoperative additional alfentanil doses were recorded. Pain assessments and cumulative analgesic consumption at postanesthesia care unit (PACU) admission, PACU discharge, postoperative 24th hour, and hospital discharge were recorded. RESULTS: The visual analog scale scores at PACU admission, PACU discharge, postoperative 24th hour, and hospital discharge were significantly lower in the ketamine group than the propofol group. The pain visual analog scale ≥ 75 at the postoperative 24th hour for the propofol group was also significantly lower (P<0.035) than that of the ketamine group. The difference in analgesic consumption between groups was statistically significant (P<0.001). CONCLUSIONS: Our study showed that ketamine supplemented with propofol and alfentanil produced better analgesia intraoperatively and postoperatively and decreased analgesic consumption compared with the propofol group after laparoscopic cholecystectomy.

Cholethorax (bilious effusion in the thorax): an unusual complication of laparoscopic cholecystectomy.

Cholethorax or bilious effusion in the thorax, is a rare condition in which bile passes into the pleural space from the abdominal cavity, necessitating urgent treatment. In this article, we present a case of cholethorax as a complication of laparoscopic cholecystectomy (LC). The patient underwent a LC due to the presence of a gallbladder polyp. The clip attached to the Hartman opened, and the abdominal cavity became contaminated with biliary fluid. Postoperatively, the patient experienced severe right upper quadrant pain and dyspnea. Both the posteroanterior (PA) chest radiography and thoracic computed tomography (CT) were remarkable for marked effusion in the right hemithorax. The patient underwent thoracentesis which resulted in the removal of 250 cc bilious pleural effusion. The bilirubin level of the pleural fluid was 9.1 mg/dL. Following thoracentesis, the patient experienced significant improvement in dyspnea and pain. The patient was discharged without any complications on the seventh day postoperatively. Cholethorax may occur as a result of diaphragmatic injuries secondary to a laparoscopic instrument and can be successfully treated by a thoracenftesis.

Splenic hematoma mimicking angiosarcoma: a case report.

Introduction. Splenic hematomas usually occur after blunt abdominal trauma. Most of the subcapsular hematomas will be resolved and reabsorbed spontaneously. However in rare cases, some of them organize and form calcified splenic masses. Angiosarcoma is an uncommon primary tumor of the spleen. Splenic angiosarcoma behaves extremely aggressive and has poor prognosis. Case Presentation. We report a forty-nine-year-old white male with organized splenic hematoma due to traffic accident mimicking splenic angiosarcoma. Conclusion. Both angiosarcoma and splenic organized hematoma have nonspecific symptoms and clinical findings. Because of the risk of hemorrhage and rupture, fine-needle biopsy should not be preferred. In case of splenic masses, excision and spleen-conserving surgery or total splenectomy should be performed.

Gossypiboma causing mechanical intestinal obstruction: a case report.

Introduction. Gossypiboma (GP) is a term used to express the mass resulting from forgotten cotton sponge in operations. Rarely, a transmural migration may occur into the gastrointestinal lumen without creating any defect by GP. Laparotomy or endoscopic removal may be required, by the way it can be taken out of the body itself by intestinal ways. In this study, we reported a case of mechanical intestinal obstruction causing GP. Case. The fifty-one-year-old female patient admitted to the emergency department with the complaints of mechanical intestinal obstruction and had a history of open cholecystectomy 20 years ago. There were the findings of intestinal obstruction in abdominal plain radiography and computerized tomography. The sponge that obstructed the lumen completely 40 cm proximal to the ileocecal valve was identified in the laparotomy with the diagnosis of brid ileus. The small intestine was closed over double-fold after removal of sponge. Transmural migration of abdominal-remained sponge was thought to be occurred without creating a defect after cholecystectomy. Postoperatively, the patient was discharged without having any problems at 4th day of hospitalization. Conclusion. Although it is a rare situation in routine clinical practice, GP should be considered as a differential diagnosis in the patients who had a diagnosis of mechanical intestinal obstruction, and laparotomy was applied before. As GP may lead to situations which cause mortality, all precautions should be taken to prevent it.

The development of ventricular fibrillation due to etomidate for anesthetic induction: a very rare side effect, case report / Desenvolvimento de fibrilação ventricular por causa de etomidato para indução anestésica: um efeito colateral muito raro, relato de caso / Desarrollo de fibrilación ventricular debido al etomidato para la inducción anestésica: un efecto colateral muy raro, relato de caso

Background and objectives: Ventricular fibrillation occurring in a patient can result in unexpected complications. Here, our aim is to present a case of ventricular fibrillation occurring immediately after anesthesia induction with etomidate administration. Case report: A fifty-six-year-old female patient with a pre-diagnosis of gallstones was admitted to the operating room for laparoscopic cholecystectomy. The induction was performed by etomidate with a bolus dose of 0.3 mg/kg. Severe and fast adduction appeared in the patient's arms immediately after induction. A tachycardia with wide QRS and ventricular rate 188 beat/min was detected on the monitor. The rhythm turned to VF during the preparation of cardioversion. Immediately we performed defibrillation to the patient. Sinus rhythm was obtained. It was decided to postpone the operation due to the patient's unstable condition. Conclusion: In addition to other known side effects of etomidate, very rarely, ventricular tachycardia and fibrillation can be also seen. To the best of our knowledge, this is the first case regarding etomidate causing VF in the literature. .

Justificativa e objetivos: A ocorrência de fibrilação ventricular em um paciente pode resultar em complicações inesperadas. Nosso objetivo é apresentar um caso de fibrilação ventricular que ocorreu após a indução anestésica com administração de etomidato. Relato de caso: Paciente do sexo feminino, 56 anos, com pré-diagnóstico de cálculos biliares, foi admitida na sala de cirurgia para colecistectomia laparoscópica. A anestesia foi induzida com a administração de etomidato com uma dose em bolus de 0,3 mg/kg. A paciente apresentou uma grave e rápida adução dos braços logo após a indução. Taquicardia com QRS largo e frequência ventricular de 188 bpm foram detectadas no monitor. O ritmo converteu-se em fibrilação ventricular (FV) durante a preparação para a cardioversão. A paciente foi imediatamente submetida a desfibrilação. O ritmo sinusal foi obtido. Decidimos adiar a cirurgia por causa da condição de instabilidade da paciente. Conclusão: Além dos efeitos secundários conhecidos de etomidato, taquicardia ventricular e fibrilação, embora muito raramente, também podem ser observadas. Até onde sabemos, esse é o primeiro caso na literatura de FV causado por etomidato. .

Justificación y objetivos: La aparición de fibrilación ventricular en un paciente puede originar complicaciones inesperadas. Nuestro objetivo es presentar un caso de fibrilación ventricular que ocurrió después de la inducción anestésica con administración de etomidato. Caso clínico: Paciente del sexo femenino, 56 años, con prediagnóstico de cálculos biliares que entró en quirófano para colecistectomía laparoscópica. La inducción de la anestesia fue realizada con administración de etomidato con una dosis en bolo de 0,3 mg/kg. La paciente presentó una grave y rápida aducción de los brazos inmediatamente después de la inducción. En el monitor se detectó taquicardia con QRS ancho y frecuencia ventricular de 188lpm. El ritmo se convirtió en fibrilación ventricular durante la preparación para la cardioversión. La pacientefue inmediatamente sometida a la desfibrilación. Se logró el ritmo sinusal. Decidimos postergar la cirugía debido a la condición de inestabilidad del paciente. Conclusión: Además de los efectos secundarios conocidos del etomidato también se pueden observar taquicardia ventricular y fibrilación (aunque sea algo muy raro). Hasta donde sabemos, este es el primer caso de fibrilación ventricular causado por etomidato en la literatura. .