Complicações perioperatórias e mortalidade em pacientes idosos submetidos a cirurgia para correção de fratura de fêmur: estudo prospectivo observacional

Background and objectivesPerioperative management of femoral fractures in elderly patients has been studied to determine modifiable causes of complications and death. The aim of this study was to evaluate the mortality rate and its causes in the elderly population with FF. We also evaluated perioperative complications and their association with postoperative mortality.MethodIn this prospective and observational study, we evaluated 182 patients, by questionnaire and electronic medical record, from the moment of hospitalization to one year after surgery. Statistical analyzes using the multivariate Cox proportional hazards model and Kaplan‐Meier curves were performed to detect independent mortality factors.ResultsFifty‐six patients (30.8%) died within one year after surgery, and the main cause of death was infection followed by septic shock. The main complication, both preoperatively and postoperatively, was hydroelectrolytic disorder. For every one‐unit (one‐year) increase in age, the odds ratio for death increased by 4%. With each new preoperative complication, the odds ratio for death increased by 28%. Patients ASA III or IV had a 95% higher odds ratio for death than patiets ASA I or II.ConclusionsIncreasing age and number of preoperative complications, in addition to ASA classification III or IV, were independent factors of increased risk of death in the population studied. The mortality rate was 30.8%, and infection followed by septic shock was the leading cause of death.     

Efeito da exposição à radiação ionizante de baixa dose na homeostase dinâmica de tiol‐dissulfeto e níveis de albumina modificada por isquemia: estudo observacional

BackgroundThe primary objective of this study was to investigate the effect of low dose ionizing radiation exposure on thiol/disulfide homeostasis and ischemia modified albumin levels. The secondary objective is to compare thiol/disulfide homeostasis and ischemia modified albumin levels among the personnel exposed to low dose ionizing radiation in anesthesia application areas, in and out of the Operation room.MethodsThe study included a total of 90 volunteers aged between 18 and 65 years old, with 45 personnel working in a setting with potential for radiation exposure (Exposed Group) and 45 personnel in a setting without radiation exposure (Control Group). Their native thiol, total thiol, disulphide, albumine and IMA levels were measured. Exposed group included personnel who were exposed to radiation outside the operating room – Operation room (‐) Group and inside the Operating room – Operation room (+) Group.ResultsAlbumin, native and total thiol levels were significantly lower in the participants exposed to radiation in the anesthesia application area, no statistically significant difference was found in terms of disulfide and ischemia modified albumin levels. In the Operation room (‐) group exposed to radiation, native thiol and total thiol values were significantly lower compared to the Operation room (+) groups.ConclusionAwareness of being in danger of oxidative stress should be established in personnel exposed to radiation in the anesthesia application area following low dose ionizing radiation exposure, and the necessary measures should be taken.     

Calcitonina como agente analgésico: revisão dos mecanismos de ação e das aplicações clínicas

Background and objectivesCalcitonin is a polypeptide hormone regulating the metabolism calcium in the body. For many years calcitonin has been used to maintain and improve bone mineral density and to reduce the fracture rate. Many studies showed that calcitonin had analgesic role in several painful circumstances. This pain‐ameliorating effect is irrelevant to its osteoclastic inhibitory effect and mechanisms like altering Na+ channel and serotonin receptor expression or hypothesis including the endorphin‐mediated mechanism were used to explain this effect. In this study we performed a thorough review on the role of calcitonin as an analgesic agent in different scenarios and investigated the fact that calcitonin can be a feasible medication to relieve pain.MethodMany studies focused on the analgesic effect of calcitonin in several painful circumstances, including acute pains related to vertebral fractures, metastasis, migraine and reflex sympathetic dystrophy as well as neuropathic pains related to spinal injuries or diabetes, and phantom pain. Also, calcitonin was showed to be a useful additive to local anesthesia in the case of controlling postoperative pain or trigeminal neuralgia more effectively. However we faced some contradictory data for conditions like lumbar canal stenosis, complex regional pain syndrome, phantom pain and malignancies.ConclusionThis study showed that calcitonin could be helpful analgesic agent in different painful situations. Calcitonin can be considered an eligible treatment for acute pains related to vertebral fractures and a feasible alternative for the treatment of the acute and chronic neuropathic pains where other medications might fail.     

Reação atípica à anestesia em distrofia muscular de Duchenne/Becker

Background and objectives

Duchenne/Becker muscular dystrophy affects skeletal muscles and leads to progressive muscle weakness and risk of atypical anesthetic reactions following exposure to succinylcholine or halogenated agents. The aim of this report is to describe the investigation and diagnosis of a patient with Becker muscular dystrophy and review the care required in anesthesia.

Relação entre consumo de tabaco e concentração de monóxido de carbono na expiração com complicações respiratórias perioperatórias

Background

The purpose of the current study was to determine the effects of preoperative cigarette smoking and the carbon monoxide level in the exhaled breath on perioperative respiratory complications in patients undergoing elective laparoscopic cholecystectomies.

Avaliação de entesopatia em pacientes com fibromialgia por meio do novo índice ultrassonográfico de entesite

ObjectiveThe aim of the present study is to determine the frequency of enthesopathy in fibromyalgia (FM) by using a newly developed ultrasonography (US) method, the Madrid Sonography Enthesitis Index (MASEI).MethodsThis study was conducted on 38 consecutive patients with FM and 48 healthy sex- and age-matched controls. Six entheseal sites (olecranon tuberosity, superior and inferior poles of patella, tibial tuberosity, superior and inferior poles of calcaneus) on both lower limbs were evaluated. All US findings were identified according to MASEI. Scores of patients and controls were compared by Student's t-test and Mann-Whitney U-test. Validity was analysed by receiver operating characteristic curve. Values of P < 0.05 were considered significant.ResultsTotal enthesitis score was 7.39 ± 4.99 (mean ± SD) among FM patients and 3.7 ± 3.22 among healthy controls (P < 0.001). The receiver operating characteristic curve established an ultrasound score of > 3.5 in the FM group as the best cut-off point to differentiate between cases and controls. No statistically significant correlation was found between the MASEI score and the FM disease duration, and the location of the tender points.ConclusionsMisdiagnoses of FM are harmful to patients and the community, and the presence of enthesopathy among FM patients increases. Its detection with the MASEI score may help to discriminate FM patients presenting with ill-defined symptoms and signs, in order to prevent mistreatment.     

Associação entre síndrome de burnout e ansiedade em residentes e anestesiologistas do Distrito Federal

Background and objective

There is a shortage of studies addressing the association between burnout syndrome and anxiety among anesthesiologists. Identifying the relationship between these two conditions is of fundamental importance for the prevention, follow‐up, and treatment of the professionals. Thus, we evaluated the association between burnout syndrome and anxiety in anesthesiologists and residents of anesthesiology in the Federal District.

Comparação entre ventilação garantida por volume controlado por pressão e ventilação controlada por volume em pacientes obesos durante cirurgia laparoscópica ginecológica na posição de Trendelenburg

Background and objectivesThe aim of this study was to investigate the efficacy of the pressure‐controlled, volume‐guaranteed (PCV‐VG) and volume‐controlled ventilation (VCV) modes for maintaining adequate airway pressures, lung compliance and oxygenation in obese patients undergoing laparoscopic hysterectomy in the Trendelenburg position.MethodsPatients (104) who underwent laparoscopic gynecologic surgery with a body mass index between 30 and 40 kg.m^-2 were randomized to receive either VCV or PCV‐VG ventilation. The tidal volume was set at 8 mL.kg^-1, with an inspired oxygen concentration of 0.4 with a Positive End‐Expiratory Pressure (PEEP) of 5 mmHg. The peak inspiratory pressure, mean inspiratory pressure, plateau pressure, driving pressure, dynamic compliance, respiratory rate, exhaled tidal volume, etCO₂, arterial blood gas analysis, heart rate and mean arterial pressure at 5 minutes after induction of anesthesia in the and at 5, 30 and 60 minutes, respectively, after pneumoperitoneum in the Trendelenburg position were recorded.ResultsThe PCV‐VG group had significantly decreased peak inspiratory pressure, mean inspiratory pressur, plateau pressure, driving pressure and increased dynamic compliance compared to the VCV group. Mean PaO₂ levels were significantly higher in the PCV‐VG group than in the VCV group at every time point after pneumoperitoneum in the Trendelenburg position.ConclusionsThe PCV‐VG mode of ventilation limited the peak inspiratory pressure, decreased the driving pressure and increased the dynamic compliance compared to VCV in obese patients undergoing laparoscopic hysterectomy. PCV‐VG may be a preferable modality to prevent barotrauma during laparoscopic surgeries in obese patients.     

Efeito da pré‐administração de flurbiprofeno axetil na CE50 do propofol durante anestesia em pacientes não estimulados: estudo clínico randomizado

Background and objectivesPreoperative use of flurbiprofen axetil (FA) is extensively adopted to modulate the effects of analgesia. However, the relationship between FA and sedation agents remains unclear. In this study, we aimed to investigate the effects of different doses of FA on the median Effective Concentration (EC50) of propofol.MethodsNinety‐six patients (ASA I or II, aged 18–65 years) were randomly assigned into one of four groups in a 1:1:1:1 ratio. Group A (control group) received 10 mL of Intralipid, and groups B, C and D received 0.5 mg.kg^‐1, 0.75 mg.kg^‐1 and 1 mg.kg^‐1 of FA, respectively, 10 minutes before induction. The depth of anesthesia was measured by the Bispectral Index (BIS). The “up‐and‐down” method was used to calculate the EC50 of propofol. During the equilibration period, if BIS ≤ 50 (or BIS > 50), the next patient would receive a 0.5 μg.mL^‐1‐lower (or‐higher) propofol Target‐Controlled Infusion (TCI) concentration. The hemodynamic data were recorded at baseline, 10 minutes after FA administration, after induction, after intubation, and 15 minutes after intubation.ResultsThe EC50 of propofol was lower in Group C (2.32 μg.mL^‐1, 95% Confidence Interval [95% CI] 1.85–2.75) and D (2.39 μg.mL^‐1, 95% CI 1.91–2.67) than in Group A (2.96 μg.mL^‐1, 95% CI 2.55–3.33) (p = 0.023, p = 0.048, respectively). There were no significant differences in the EC50 between Group B (2.53 μg.mL^‐1, 95% CI 2.33–2.71) and Group A (p ˃ 0.05). There were no significant differences in Heart Rate (HR) among groups A, B and C. The HR was significantly lower in Group D than in Group A after intubation (66 ± 6 vs. 80 ± 10 bpm, p < 0.01) and 15 minutes after intubation (61 ± 4 vs. 70 ± 8 bpm, p < 0.01). There were no significant differences among the four groups in Mean Arterial Pressure (MAP) at any time point. The MAP of the four groups was significantly lower after induction, after intubation, and 15 minutes after intubation than at baseline (p < 0.05).ConclusionHigh‐dose FA (0.75 mg.kg^‐1 or 1 mg.kg^‐1) reduces the EC50 of propofol, and 1 mg.kg^‐1 FA reduces the HR for adequate anesthesia in unstimulated patients. Although this result should be investigated in cases of surgical stimulation, we suggest that FA pre‐administration may reduce the propofol requirement when the depth of anesthesia is measured by BIS.     

Relação entre ansiedade pré‐operatória e consciência durante a anestesia: estudo observacional

BackgroundAnxiety is a state of worry caused by the anticipation of external or internal danger. Awareness During Anesthesia (ADA) is an unexpected memory recall during anesthesia. In this study, we aimed to determine the factors that affect preoperative anxiety and observe the incidence of ADA, as well as to determine the anxiety levels of these patients with a history of ADA.MethodsThis study was planned to be prospective, observational, and cross‐sectional. Patients in whom septoplasty was planned, who was admitted to the anesthesiology outpatients between March 2018 and September 2018, were ASA I−II, and aged 18−70 years were included in the study. The demographic characteristics of patients were recorded. The State‐Trait Anxiety Inventory (STAI) was used to determine anxiety during a preoperative evaluation. The modified Brice awareness score was used simultaneously to determine previous ADA.ResultsThe anxiety scores of patients who were conscious during anesthesia were higher than other patients. The mean STAI score was 40.85±14.8 in the 799 patients who met the inclusion criteria of this study. When the anxiety scores were compared, the scores were higher in females than in males (p < 0.05). The mean STAI score was found as 40.3±13.8 in patients who dreamed during anesthesia.ConclusionIt is important to determine the anxiety levels of patients in the preoperative period to prevent the associated complications. Preoperative anxiety, besides preventing ADA, should be dealt with in a multidisciplinary manner. ADA should be carefully questioned while evaluating previous anesthesia experiences.     

Avaliação da aterosclerose subclínica e de níveis plasmáticos de LDL minimamente modificada em pacientes com espondilite anquilosante e sua correlação com a atividade da doença

IntroductionAccelerated atherosclerosis has been shown in some autoimmune diseases, mainly in Systemic Lupus Erythematosus and Rheumatoid Arthritis. Although high preva- lence of corticosteroids use may be a confounding factor due to their detrimental effects on several risk factors, systemic inflammation per se is supposed to play an important role in atherogenesis in these patients.MethodsWe have evaluated sub-clinical atherosclerosis and plasma levels of circulating electronegative LDL, which represents the fraction of LDL that is minimally modified, in patients with ankylosing spondylitis (AS). Fourteen patients who fulfilled the modified New York criteria for AS were compared with 13 paired controls. Carotid intimal-media thick- ness (IMT) was assessed by ultrasonography bilaterally in common carotid artery, internal carotid artery and in the bifurcation. Groups were homogeneous regarding cardiovascular risk factors. Only a single patient in AS group was in use of corticosteroid.ResultsThe presence of active inflammation was demonstrated by elevated BASDAI and higher CRP levels and in patients versus controls (12.36 vs. 3.45 mg/dl, P = 0.002). No dif- ference was found in carotid IMT between both groups, in any site of artery. Averaged IMT (6 measurements, at 3 pre-specified sites bilaterally) was 0.72 ± 0.28 in AS group and 0.70 ± 0.45 mm in controls (P = 0.91). Minimally modified LDL did not differ significantly either between patients and controls (14.03 ± 17.40 vs. 13.21 ± 10.21; P = 0.88).ConclusionsPatients with AS did not show increased carotid IMT in comparison to con- trols. In the same way, circulating plasma levels of LDL (-), did not differ significantly in both groups.     

Características demográficas e clínicas de pacientes com artrite reumatoide no Piauí, Brasil – avaliação de 98 pacientes

IntroductionBrazilian epidemiological studies on rheumatoid arthritis are scarce, mainly in the northeast; thus many data currently available originate from the international literature.ObjectivesTo describe demographic, clinical and serological characteristics of patients with rheumatoid arthritis (RA) followed‐up by the same physician, in state of Piauí, Brazil.Patients and methodsData were collected between August 2010 and March 2013, in three health services of Piauí that provided health care in Rheumatology: a university‐affiliated hospital, a public outpatient clinic and a private clinic.ResultsThe numbers represent mean ± SD or percentage: 47.5 ± 11.03 years‐old non‐Caucasian woman, non‐smoker (59.2%), low educational level, mean disease duration of 7.7 years ± 7.6, and major extra‐articular manifestations were rheumatoid nodules (19.4%) and sicca syndrome (46.9%).ConclusionFeatures of rheumatoid arthritis obtained in this study are similar to those found in some national and international studies, but we observed higher female preponderance and illiteracy rate, in addition to a moderately severe erosive disease on average, with frequent sicca and other extra‐articular manifestations.     

Atualização sobre reações de hipersensibilidade perioperatória: documento conjunto da Sociedade Brasileira de Anestesiologia (SBA) e Associação Brasileira de Alergia e Imunologia (ASBAI) – Parte I: tratamento e orientação pós‐crise

Experts from the Brazilian Association of Allergy and Immunology (ASBAI) and the Brazilian Society of Anesthesiology (SBA) interested in the issue of perioperative anaphylaxis, and aiming to strengthen the collaboration between the two societies, combined efforts to study the topic and to prepare a joint document to guide specialists in both areas. The purpose of the present series of two articles was to report the most recent evidence based on the collaborative assessment between both societies. This first article will consider the updated definitions, treatment and guidelines after a perioperative crisis. The following article will discuss the major etiologic agents, how to proceed with the investigation, and the appropriate tests.     

Papel da hemodiluição aguda na taxa de transfusão sanguínea em pacientes submetidos a tratamento cirúrgico de escoliose: estudo observacional retrospectivo

Background and objectivesThe study assessed the role of acute hemodilution in the blood transfusion rate in patients submitted to surgical treatment of scoliosis.MethodsRetrospective observational study performed at Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (HC‐FMRP?USP). Medical charts of patients submitted to elective correction of scoliosis between January 1996 and December 2016 were analyzed. Variables assessed were: age, weight, sex, presence of comorbidities, data regarding anesthesia and surgery, lab data, adverse events and blood transfusion rate. The final sample consisted of 33 procedures performed by the same anesthesiologist and same surgeon, divided into two groups: Hemodilution Group (n = 16) and Control Group (n = 17). Indication of acute normovolemic hemodilution was determined by patient refusal of blood transfusion for religious reasons.ResultsThe sample was statistically homogeneous and the groups were compared in terms of the attributes analyzed. The volume of homologous blood used by the Hemodilution Group was significantly lower than the Control Group (p = 0.0016). The percentage of patients who required transfusion was 12.5% in the Hemodilution Group, while it was 70.69% (p = 0.0013) in the Control Group. Upon hospital discharge, mean values of hemoglobin and hematocrit between groups did not present significant differences (p = 0.0679; p = 0.1027, respectively).ConclusionsAcute normovolemic hemodilution, in scoliosis correction surgeries reduces blood transfusion rates, meeting patient needs without increasing adverse events or infection rates.     

Impacto de la anemia sobre la supervivencia de los pacientes intervenidos de cistectomía radical por tumor vesical

ObjectiveTo evaluate the prevalence of preoperative anemia and its effect on oncological outcomes in patients undergoing radical cystectomy (RC) due to bladder cancer.Material and methodsRetrospective single-center study with 176 RCs between May 2008 and July 2018. Anemia was defined according to the WHO classification (male < 130 mg/dL, female < 120 mg/dL). Kaplan-Meier test was used to estimate recurrence-free, cancer-specific and overall survival rates. Multivariate logistic regression was used to identify factors associated with overall mortality rates.ResultsOverall, 89 (50.6%) patients had preoperative anemia, and 44 of them (49.4%) received neoadjuvant chemotherapy. Anemic patients resulted in higher rates of ASA (ASA > 2: 54.6 vs. 27.5%; P = .003), ectasia rate previous to RC (41.6 vs. 19.5%; P = .002), treatment with neoadjuvant chemotherapy (49.4 vs. 19.5%; P < .001), blood transfusion rate (25.8 vs. 11.5%; P = .015) and pathological stage (pT > 2: 49.4 vs. 33.3%; P = .03) compared to non-anemic patients. Median follow-up was 27.2 months (IQR 11.12-72.28). Median overall survival (105 vs. 34 months, log-rank; P = .001), cancer-specific survival (89 vs. 61 months; P = .004) and recurrence-free survival (85 vs. 57 months; P = .002) were significantly lower in anemic patients compared to the non-anemic group. In multivariable Cox analysis, preoperative anemia, pT > 2 and N ≥ 1 were independently associated with overall mortality.ConclusionPreoperative anemia was common in patients undergoing RC for bladder cancer, and it is related with a worse cancer prognosis. Anemia is a preoperative modifiable factor; we believe that the implementation of Patient Blood Management programs during prehabilitation may have a relevant role in improving the oncological outcomes in these patients.     

Avaliação do tempo de atraso do índice bispectral na resposta à indução da anestesia: estudo observacional

Background and objectivesAccording to the manufacturer, the Bispectral Index (BIS) has a processing time delay of 5–10 s. Studies addressing this have suggested longer delays. We evaluated the time delay in the Bispectral Index response.MethodsBased on clinical data from 45 patients, using the difference between the predicted and the real BIS, calculated during a fixed 3 minutes period after the moment the Bispectral Index dropped below 80 during the induction of general anesthesia with propofol and remifentanil.ResultsThe difference between the predicted and the real BIS was in average 30.09 ± 18.73 s.ConclusionOur results may be another indication that the delay in BIS processing may be much longer than stated by the manufacture, a fact with clinical implications.     

Efeito do bloqueio do gânglio estrelado direito guiado por ultrassom na fibrilação atrial perioperatória em pacientes submetidos a lobectomia pulmonar: estudo controlado randomizado

ObjectiveTo observe the effects of preoperative right stellate ganglion block on perioperative atrial fibrillation in patients undergoing lung lobectomy.MethodsTwo hundred patients who underwent a scheduled lobectomy were randomly divided into the S and C groups. The S group was injected with 4 mL of 0.2% ropivacaine under ultrasound guidance, and the C group did not receive stellate ganglion block. The patients underwent continuous ECG monitoring, and the incidences of atrial fibrillation and other types of arrhythmias were recorded from the start of surgery to 24 hours after surgery.ResultsThe respective incidences of atrial fibrillation in the S group and the C group were 3% and 10% (p = 0.045); other atrial arrhythmias were 20% and 38% (p = 0.005); and ventricular arrhythmia were 28% and 39% (p = 0.09).ConclusionsThe results of the study indicated that preoperative right stellate ganglion block can effectively reduce the incidence of intraoperative and postoperative atrial fibrillation.     

Efeito de diferentes doses de esmolol sobre a resposta hemodinâmica,BIS e resposta de movimento durante a intubação orotraqueal: estudo prospectivo,randômico e duplo‐cego

ObjectiveA prospective, randomized and double‐blind study was planned to identify the optimum dose of esmolol infusion to suppress the increase in bispectral index values and the movement and hemodynamic responses to tracheal intubation.Materials and methods120 patients were randomly allocated to one of three groups in a double‐blind fashion. 2.5 mg kg⁻¹ propofol was administered for anesthesia induction. After loss of consciousness, and before administration of 0.6 mg kg⁻¹ rocuronium, a tourniquet was applied to one arm and inflated to 50 mm Hg greater than systolic pressure. The patients were divided into 3 groups; 1 mg kg⁻¹ h⁻¹ esmolol was given as the loading dose and in Group Es50 50 μg kg⁻¹ min⁻¹, in Group Es150 150 μg kg⁻¹ min⁻¹, and in Group Es250 250 μg kg⁻¹ min⁻¹ esmolol infusion was started. Five minutes after the esmolol has been begun, the trachea was intubated; gross movement within the first minute after orotracheal intubation was recorded.ResultsIncidence of movement response and the ΔBIS max values were comparable in Group Es250 and Group Es150, but these values were significantly higher in Group Es50 than in the other two groups. In all three groups in the 1 st minute after tracheal intubation heart rate and mean arterial pressure were significantly higher compared to values from before intubation (p < 0.05). In the study period there was no significant difference between the groups in terms of heart rate and mean arterial pressure.ConclusionIn clinical practise we believe that after 1 mg kg⁻¹ loading dose, 150 μg kg⁻¹ min⁻¹ iv esmolol dose is sufficient to suppress responses to tracheal intubation without increasing side effects.     

Efeitos das alterações no oxigênio cerebral durante cirurgia de revascularização do miocárdio sobre a disfunção cognitiva no pós‐operatório em pacientes idosos: estudo piloto

Background and objectives

Postoperative cognitive dysfunction is common after cardiac surgery. Adequate cerebral perfusion is essential and near infrared spectroscopy (NIRS) can measure cerebral oxygenation. Aim of this study is to compare incidence of early and late postoperative cognitive dysfunction in elderly patients treated with conventional or near infrared spectroscopy monitoring.

Bloqueio do plano abdominal transverso guiado por ultrassom em pacientes submetidos à colecistectomia laparoscópica: comparação da eficácia de bupivacaína e levobupivacaína no controle da dor pós‐operatória

Background and objective

The use of transversus abdominis plane block with different local anesthetics is considered as a part of multimodal analgesia regimen in laparoscopic cholecystectomy patients. However no studies have been published comparing bupivacaine and levobupivacaine for transversus abdominis plane block. We aimed to compare bupivacaine and levobupivacaine in ultrasound‐guided transversus abdominis plane block in patients undergoing laparoscopic cholecystectomy.