Author Correction: Combined quantification of procalcitonin and HLA-DR improves sepsis detection in surgical patients.

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.

Anestesia epidural para realizar gastrostomía abierta en paciente con esclerosis lateral amiotrófica / Epidural anesthesia for open gastrostomy in a patient with amyotrophic lateral sclerosis

Abstract Amyotrophic lateral sclerosis is characterized by the progressive degeneration of motor neurons, causing a constellation of symptoms that include muscle weakness, atrophy, fasciculations, spasticity, and hyperreflexia. Currently, Rulizol is the only treatment that has been shown to delay its progression, though to a very small extent. Disease prognosis is grim, with death caused mainly by respiratory failure secondary to muscle weakness, making anesthetic management of these patients a true challenge. The use of muscle relaxants must be avoided as much as possible because of the high risk of ventilatory depression, considering that these patients have an abnormal unpredictable response as a result of heightened sensitivity related to the lower number of acetylcholine receptors. If muscle relaxants are required during the surgery, rocuronium, among nondepolarizing muscle relaxants, is the drug of choice because of its short half-life, while depolarizing relaxants such as succinylcholine are contraindicated because of the risk of lethal hyperkalemia. In terms of intraoperative hypnotics and analgesics, propofol and remifentanil are ideal because of their short half-life. Regarding neuroaxial anesthesia, despite widespread reluctancy to use it, its benefits and rather uncommon adverse effects lead many anesthetists to consider it as an important alternative when it comes to deciding between general or neuroaxial anesthesia, because it reduces airway manipulation significantly, thus reducing respiratory complications as described in this clinical case.

Resumen La esclerosis lateral amiotrófica se caracteriza por la degeneración progresiva de las neuronas motoras provocando una constelación de síntomas que incluyen debilidad muscular, atrofia, fasciculaciones, espasticidad e hiperreflexia. Actualmente, el unico tratamiento que ha demostrado retrasar mínimamente su progresión ha sido el Rulizol. Su pronóstico es infausto, falleciendo mayoritariamente por insuficiencia respiratoria secundaria a la debilidad de su musculatura, siendo el manejo anestésico de estos pacientes, un importante desafío. El uso de relajantes neuromusculares deberá evitarse en la medida de lo posible por el riesgo elevado de depresión ventilatoria, ya que estos pacientes tienen una respuesta anormal e impredecible a ellos al presentar una sensibilidad aumentada por el menor número de receptores de acetilcolina; Si la cirugía requiere de ellos, es de elección dentro de los relajantes neuromusculares no despolarizantes, el rocuronio por su vida media corta, contraindicándose el uso de los despolarizantes como la succinilcolina, por el riesgo de hiperkaliemia letal. En cuanto a los hipnóticos y analgésicos que deberemos de usar intraoperatoriamente, el propofol y remifentanilo serían los más ideales por su vida media corta. En cuanto a la anestesia neuroaxial, a pesar de la reticencia extendida a su uso, su beneficio y sus no tan frecuentes efectos adversos, hacen a muchos anestesistas, considerarla como una alternativa de peso a la hora de decidir entre anestesia general o neuroaxial, pues reduce considerablemente la manipulación de la vía aérea, disminuyendo por tanto complicaciones respiratorias posteriores, como referimos en el caso clínico que describiremos a continuación.

Combined quantification of procalcitonin and HLA-DR improves sepsis detection in surgical patients.

Early recognition of sepsis is a key factor to improve survival to this disease in surgical patients, since it allows prompt control of the infectious source. Combining pro-inflammatory and immunosupression biomarkers could represent a good strategy to improve sepsis detection. Here we evaluated the combination of procalcitonin (PCT) with gene expression levels of HLA-DRA to detect sepsis in a cohort of 154 surgical patients (101 with sepsis and 53 with no infection). HLA-DRA expression was quantified using droplet digital PCR, a next-generation PCR technology. Area under the receiver operating curve analysis (AUROC) showed that the PCT/HLA-DRA ratio outperformed PCT to detect sepsis (AUROC [CI95%], p): PCT: 0.80 [0.73-0.88], <0.001; PCT/HLA-DRA: 0.85 [0.78-0.91], <0.001. In the multivariate analysis, the ratio showed a superior ability to predict sepsis compared to that of PCT (OR [CI 95%], p): PCT/HLA-DRA: 7.66 [1.82-32.29], 0.006; PCT: 4.21 [1.15-15.43] 0.030. Multivariate analysis was confirmed using a new surgical cohort with 74 sepsis patients and 21 controls: PCT/HLA-DRA: 34.86 [1.22-995.08], 0.038; PCT: 5.52 [0.40-75.78], 0.201. In conclusion, the combination of PCT with HLA-DRA is a promising strategy for improving sepsis detection in surgical patients.

Enhanced recovery after surgery protocol versus conventional perioperative care in colorectal surgery: a single center cohort study / Aceleração da recuperação após protocolo cirúrgico versus cuidados perioperatórios convencionais em cirurgia colorretal: um estudo de coorte em centro único

Abstract Background Enhanced recovery after surgery (ERAS) protocols consist of a set of perioperative measures aimed at improving patient recovery and decreasing length of stay and postoperative complications. We assess the implementation and outcomes of an ERAS program for colorectal surgery. Methods Single center observational study. Data were collected from consecutive patients undergoing open or laparoscopic colorectal surgery during 2 time periods, 3 years before (Pre-ERAS) and 2 years after (Post-ERAS) the implementation of an ERAS protocol. Baseline characteristics of both groups were compared. The primary outcome was the number of patients with 180 days follow-up with moderate or severe complications; secondary outcomes were postoperative length of stay, and specific complications. Data were extracted from patient records. Results There were 360 patients in the Pre-ERAS group and 319 patients in the Post-ERAS Group. 214 (59.8%) patients developed at least one complication in the pre ERAS group, versus 163 patients in the Post-ERAS group (51.10%). More patients in the Pre-ERAS group developed moderate or severe complications (31.9% vs. 22.26%, p = 0.009); and severe complications (15.5% vs. 5.3%; p < 0.0001). The median length of stay was 13 (17) days in Pre-ERAS Group and 11 (10) days in the Post-ERAS Group (p = 0.034). No differences were found on mortality rates (4.7% vs. 2.5%; p = 0.154), or readmission (6.39% vs. 4.39%; p = 0.31). Overall ERAS protocol compliance in the Post-ERAS cohort was 88%. Conclusions The implementation of ERAS protocol for colorectal surgery was associated with a significantly reduction of postoperative complications and length of stay.

Resumo Justificativa O protocolo ERAS - do Inglês Enhanced Recovery After Surgery - consiste em um conjunto de medidas perioperatórias destinadas a melhorar a recuperação do paciente e diminuir o tempo de internação e as complicações pós-operatórias. Avaliamos a implantação e os resultados de um protocolo ERAS para cirurgia colorretal. Métodos Estudo observacional em centro único. Os dados foram coletados de pacientes consecutivos submetidos à cirurgia colorretal aberta ou laparoscópica durante dois períodos: três anos antes (pré-ERAS) e dois anos após (pós-ERAS) a implantação de um protocolo ERAS. As características basais de ambos os grupos foram comparadas. O desfecho primário foi o número de pacientes com 180 dias de acompanhamento com complicações moderadas ou graves. Os desfechos secundários foram tempo de internação pós-cirurgia e complicações específicas. Os dados foram extraídos de prontuários dos pacientes. Resultados O grupo pré-ERAS foi composto por 360 pacientes e o grupo pós-ERAS por 319. No grupo pré ERAS, 214 pacientes (59,8%) desenvolveram pelo menos uma complicação versus 163 (51,10%) no grupo pós-ERAS. Um número maior de pacientes do grupo pré-ERAS desenvolveu complicações moderadas ou graves (31,9% vs. 22,26%, p = 0,009); e complicações graves (15,5% vs. 5,3%; p < 0,0001). A mediana do tempo de internação foi de 13 (17) dias no grupo pré-ERAS e de 11 (10) dias no grupo pós-ERAS (p = 0,034). Não houve diferença nas taxas de mortalidade (4,7% vs. 2,5%; p = 0,1554) ou de reinternação (6,39% vs. 4,39%; p = 0,31). A conformidade geral do protocolo ERAS na coorte pós-ERAS foi de 88%. Conclusões A implantação do protocolo ERAS para cirurgia colorretal foi associada a uma redução significativa das complicações pós-operatórias e do tempo de internação.

[Enhanced recovery after surgery protocol versus conventional perioperative care in colorectal surgery. A single center cohort study]. / Aceleração da recuperação após protocolo cirúrgico versus cuidados perioperatórios convencionais em cirurgia colorretal. Um estudo de coorte em centro único.

BACKGROUND: Enhanced recovery after surgery (ERAS) protocols consist of a set of perioperative measures aimed at improving patient recovery and decreasing length of stay and postoperative complications. We assess the implementation and outcomes of an ERAS program for colorectal surgery. METHODS: Single center observational study. Data were collected from consecutive patients undergoing open or laparoscopic colorectal surgery during 2 time periods, 3 years before (Pre-ERAS) and 2 years after (Post-ERAS) the implementation of an ERAS protocol. Baseline characteristics of both groups were compared. The primary outcome was the number of patients with 180 days follow-up with moderate or severe complications; secondary outcomes were postoperative length of stay, and specific complications. Data were extracted from patient records. RESULTS: There were 360 patients in the Pre-ERAS group and 319 patients in the Post-ERAS Group. 214 (59.8%) patients developed at least one complication in the pre ERAS group, versus 163 patients in the Post-ERAS group (51.10%). More patients in the Pre-ERAS group developed moderate or severe complications (31.9% vs. 22.26%, p=0.009); and severe complications (15.5% vs. 5.3%; p<0.0001). The median length of stay was 13 (17) days in Pre-ERAS Group and 11 (10) days in the Post-ERAS Group (p=0.034). No differences were found on mortality rates (4.7% vs. 2.5%; p=0.154), or readmission (6.39% vs. 4.39%; p=0.31). Overall ERAS protocol compliance in the Post-ERAS cohort was 88%. CONCLUSIONS: The implementation of ERAS protocol for colorectal surgery was associated with a significantly reduction of postoperative complications and length of stay.

Perioperative use of angiotensin-converting-enzyme inhibitors and angiotensin receptor antagonists.

STUDY OBJECTIVE: Clinical repercussions of perioperative treatment with ACEIs/ARBs. DESIGN: Systematic review according to PRISMA statement. SETTING: Perioperative period. PATIENTS: 29 studies 11 cases/cases series, 12 observational studies and 6 randomized studies. MEASUREMENTS: Arterial blood pressure differences, refractory hypotension, other comorbidities. MAIN RESULTS: The studies show different results regarding the topics measured. They are divided in the results regarding blood pressure, long term morbidities and effects in neuraxial anesthesia. CONCLUSIONS: Withholding AECI/ARBs on the morning prior to surgery could be recommended as a potentially effective measure, with a low level of evidence, in order to reduce the appearance of hypotension in the perioperative period of non-cardiac surgery.

Intraoperative goal directed hemodynamic therapy in noncardiac surgery: a systematic review and meta-analysis / Terapia hemodinâmica alvo-dirigida no intraoperatório de cirurgia não cardíaca: revisão sistemática e meta-análise

Abstract Background: The goal directed hemodynamic therapy is an approach focused on the use of cardiac output and related parameters as end-points for fluids and drugs to optimize tissue perfusion and oxygen delivery. Primary aim: To determine the effects of intraoperative goal directed hemodynamic therapy on postoperative complications rates. Methods: A meta-analysis was carried out of the effects of goal directed hemodynamic therapy in adult noncardiac surgery on postoperative complications and mortality using Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology. A systematic search was performed in Medline PubMed, Embase, and the Cochrane Library (last update, October 2014). Inclusion criteria were randomized clinical trials in which intraoperative goal directed hemodynamic therapy was compared to conventional fluid management in noncardiac surgery. Exclusion criteria were trauma and pediatric surgery studies and that using pulmonary artery catheter. End-points were postoperative complications (primary) and mortality (secondary). Those studies that fulfilled the entry criteria were examined in full and subjected to quantifiable analysis, predefined subgroup analysis (stratified by type of monitor, therapy, and hemodynamic goal), and predefined sensitivity analysis. Results: 51 RCTs were initially identified, 24 fulfilling the inclusion criteria. 5 randomized clinical trials were added by manual search, resulting in 29 randomized clinical trials in the final analysis, including 2654 patients. A significant reduction in complications for goal directed hemodynamic therapy was observed (RR: 0.70, 95% CI: 0.62-0.79, p < 0.001). No significant decrease in mortality was achieved (RR: 0.76, 95% CI: 0.45-1.28, p = 0.30). Quality sensitive analyses confirmed the main overall results. Conclusions: Intraoperative goal directed hemodynamic therapy with minimally invasive monitoring decreases postoperative complications in noncardiac surgery, although it was not able to show a significant decrease in mortality rate.

Resumo Justificativa: A terapia hemodinâmica alvo-dirigida (THAD) é uma abordagem focada no uso do débito cardíaco (DC) e parâmetros relacionados, como desfechos para fluidos e medicamentos para aprimorar a perfusão tecidual e o fornecimento de oxigênio. Objetivo primário: determinar os efeitos da THAD sobre as taxas de complicações no pós-operatório. Métodos: Metanálise dos efeitos da THAD em cirurgias não cardíacas de adultos sobre as complicações pós-operatórias e mortalidade, com a metodologia PRISMA. Uma busca sistemática foi feita no Medline PubMed, Embase e Biblioteca Cochrane (última atualização, outubro de 2014). Os critérios de inclusão foram estudos clínicos randômicos (ECRs) nos quais a THAD no intraoperatório foi comparada com a terapia convencional de reposição de líquidos em cirurgia não cardíaca. Os critérios de exclusão foram traumatismo e estudos de cirurgia pediátrica e aqueles que usaram cateter de artéria pulmonar. Os desfechos, primário e secundário, foram complicações pós-operatórias e mortalidade, respectivamente. Os estudos que atenderam aos critérios de inclusão foram examinados na íntegra e submetidos à análise quantitativa, análise de subgrupo pré-definido (estratificada por tipo de monitor, terapia e objetivo hemodinâmico) e análise de sensibilidade pré-definida. Resultados: 51 ECRs foram identificados inicialmente, 24 atenderam aos critérios de inclusão. Cinco ECRs foram adicionados por busca manual, resultando em 29 ECRs para análise final, incluindo 2.654 pacientes. Uma redução significativa das complicações para a THAD (RR: 0,70, IC de 95%: 0,62-0,79, p < 0,001). Nenhuma diminuição significativa na mortalidade foi observada (RR: 0,76, IC de 95%: 0,45-1,28, p = 0,30). Análises de sensibilidade qualitativa confirmaram os principais resultados gerais. Conclusões: THAD no intraoperatório com monitoração minimamente invasiva diminui as complicações no pós-operatório de cirurgia não cardíaca, embora não tenha mostrado uma redução significativa da taxa de mortalidade.

Intraoperative goal directed hemodynamic therapy in noncardiac surgery: a systematic review and meta-analysis.

BACKGROUND: The goal directed hemodynamic therapy is an approach focused on the use of cardiac output and related parameters as end-points for fluids and drugs to optimize tissue perfusion and oxygen delivery. Primary aim: To determine the effects of intraoperative goal directed hemodynamic therapy on postoperative complications rates. METHODS: A meta-analysis was carried out of the effects of goal directed hemodynamic therapy in adult noncardiac surgery on postoperative complications and mortality using Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology. A systematic search was performed in Medline PubMed, Embase, and the Cochrane Library (last update, October 2014). Inclusion criteria were randomized clinical trials in which intraoperative goal directed hemodynamic therapy was compared to conventional fluid management in noncardiac surgery. Exclusion criteria were trauma and pediatric surgery studies and that using pulmonary artery catheter. End-points were postoperative complications (primary) and mortality (secondary). Those studies that fulfilled the entry criteria were examined in full and subjected to quantifiable analysis, predefined subgroup analysis (stratified by type of monitor, therapy, and hemodynamic goal), and predefined sensitivity analysis. RESULTS: 51 RCTs were initially identified, 24 fulfilling the inclusion criteria. 5 randomized clinical trials were added by manual search, resulting in 29 randomized clinical trials in the final analysis, including 2654 patients. A significant reduction in complications for goal directed hemodynamic therapy was observed (RR: 0.70, 95% CI: 0.62-0.79, p<0.001). No significant decrease in mortality was achieved (RR: 0.76, 95% CI: 0.45-1.28, p=0.30). Quality sensitive analyses confirmed the main overall results. CONCLUSIONS: Intraoperative goal directed hemodynamic therapy with minimally invasive monitoring decreases postoperative complications in noncardiac surgery, although it was not able to show a significant decrease in mortality rate.

[Intraoperative goal directed hemodynamic therapy in noncardiac surgery: a systematic review and meta-analysis]. / Terapia hemodinâmica alvo-dirigida no intraoperatório de cirurgia não cardíaca: revisão sistemática e meta-análise.

BACKGROUND: The goal directed hemodynamic therapy is an approach focused on the use of cardiac output and related parameters as end-points for fluids and drugs to optimize tissue perfusion and oxygen delivery. Primary aim: To determine the effects of intraoperative goal directed hemodynamic therapy on postoperative complications rates. METHODS: A meta-analysis was carried out of the effects of goal directed hemodynamic therapy in adult noncardiac surgery on postoperative complications and mortality using Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology. A systematic search was performed in Medline PubMed, Embase, and the Cochrane Library (last update, October 2014). Inclusion criteria were randomized clinical trials in which intraoperative goal directed hemodynamic therapy was compared to conventional fluid management in noncardiac surgery. Exclusion criteria were trauma and pediatric surgery studies and that using pulmonary artery catheter. End-points were postoperative complications (primary) and mortality (secondary). Those studies that fulfilled the entry criteria were examined in full and subjected to quantifiable analysis, predefined subgroup analysis (stratified by type of monitor, therapy, and hemodynamic goal), and predefined sensitivity analysis. RESULTS: 51 RCTs were initially identified, 24 fulfilling the inclusion criteria. 5 randomized clinical trials were added by manual search, resulting in 29 randomized clinical trials in the final analysis, including 2654 patients. A significant reduction in complications for goal directed hemodynamic therapy was observed (RR: 0.70, 95% CI: 0.62-0.79, p<0.001). No significant decrease in mortality was achieved (RR: 0.76, 95% CI: 0.45-1.28, p=0.30). Quality sensitive analyses confirmed the main overall results. CONCLUSIONS: Intraoperative goal directed hemodynamic therapy with minimally invasive monitoring decreases postoperative complications in noncardiac surgery, although it was not able to show a significant decrease in mortality rate.

Perioperative Use of Clevidipine: A Systematic Review and Meta-Analysis.

BACKGROUND: Clevidipine is an ultrashort-acting drug for rapid reduction of blood pressure by selectively acting on the L-type Ca2+ channels on arteriolar smooth muscle. The drug's ultrashort action in reducing the blood pressure is due to its rapid hydrolysis by blood and extravascular tissue esterases, which does not depend on hepato-renal metabolism and excretion. An analysis of the perioperative management of blood pressure should be considered to compare with other intravenous antihypertensive agents. METHODS: Analyses of the available evidence in randomized clinical trials following the PRISMA methodology as well as clinical significance according to the GRADE system were conducted. Placebo versus other antihypertensive drugs studies were included. Statistical assessments were done using the X2 and I2 tests. RESULTS: Clevidipine was more effective in maintaining the blood pressure within pre-specified ranges compared with other antihypertensive drugs (MD, -17.87 CI 95%: -29.02 to -6.72; p = 0.02). The use of Clevidipine versus placebo and rescue antihypertensive intravenous drug showed a clear reduction in rates of treatment failure (RR 0.10; IC 95%; 0.05-0.18; p <0.0001). There was no difference in the incidence of adverse events compared with placebo (RR 1.47; 95% CI 0.89 to 2.43, p = 0.14) and with other antihypertensive drugs (RR 0.78, 95% CI 0.45 to 1.35; p = 0.37). In addition, there was no difference in the incidence of atrial fibrillation (AF) between clevidipine and control groups (RR 1.09, IC del 95%: 0.65 a 1.83; p = 0.73). CONCLUSIONS: Clevidipine is an ultrafast-acting drug that is highly effective for management of perioperative arterial hypertension. It is devoid of adverse effects associated with the use of other IV antihypertensives. Its favorable pharmacodynamic and pharmacokinetic properties make clevidipine the drug of choice for the management of acute perioperative hypertension. It is important to emphasize the need for further studies with a larger number of patients to confirm these findings and increase the degree of evidence.

Perioperative goal-directed hemodynamic therapy in noncardiac surgery: a systematic review and meta-analysis.

STUDY OBJECTIVE: Goal-directed fluid therapy (GDHT) has been proposed as a method to reduce complications and mortality. DESIGN: Meta-analysis of the effects of perioperative GDHT in adult noncardiac surgery on mortality and postoperative complications was performed using the PRISMA methodology. A systematic search was performed in MEDLINE, PubMed, EMBASE, and the Cochrane Library (last update, October 2014). Inclusion criteria were as follows: randomized clinical trials (RCTs) in which perioperative GDHT was compared with conventional fluid management in noncardiac surgery. Exclusion criteria were as follows: trauma and pediatric surgery studies. End points were mortality and number of patients with complications. SETTING: District general hospital. PATIENTS: Thirty-nine RCTs were initially identified, with 8 fulfilling the inclusion criteria. Two RCTs were added by manual search, resulting in 10 RCTs in the final analysis, including 1527 patients. MEASUREMENTS: Those studies that fulfilled the entry criteria were examined in full and subjected to quantifiable analysis, predefined subgroup analysis (stratified by supraphysiological or physiological hemodynamic goal and by time the intervention was carried out, perioperative or postoperative), and predefined sensitivity analysis. MAIN RESULTS: A significant reduction was observed in mortality associated with GDHT compared with conventional fluid therapy (risk ratio, 0.63; 95% confidence interval, 0.42-0.94; P = .02). However, no differences were found in the number of patients with complications (risk ratio, 0.75; 95% confidence interval, 0.50-1.17; P = .21), and the sensitivity analysis did not confirm the results. CONCLUSIONS: This meta-analysis, with its limitations, shows that the use of perioperative GDHT may reduce postoperative mortality, but it is unable to show a reduction in the number of patients with complications.

Rehabilitación multimodal: práctica clínica perioperatoria de mínima agresión / Enhanced recovery: minimally aggressive perioperative practice

No disponible

National survey on patient's fears before a general surgery procedure.

OBJECTIVE: To assess the magnitude of the different causes of anxiety in patients and families, facing surgery. METHODS: Cross-sectional multicenter national survey recruiting 1,260 participants between patients and companions, analyzing the impact of 14 areas selected based on scientific publications aimed at the general public, concerning patients and/or companions, focused on concern about surgery. Patient sex, age, type of surgery (minor/major) and expected inpatient or ambulatory surgery were analyzed. For the companions sex and age, and relationship to patient were analyzed. In both cases it was assessed based on a unidimensional scale of 0 to 10, with 0 being be minimal cause for concern and 10, maximum. RESULTS: The most prominent have been the fear of the unknown, possible complications, the impact on quality of life, the accuracy of diagnosis and possible malignancy of the disease, as well as anesthesia and pain control. There are significant differences in the involvement of patients and companions; and are also differences by sex and age of the patient; type of surgery (minor/major) and expected hospital admission or not. CONCLUSIONS: The patient faces surgery with a number of fears that can be reduced with increased information.

Feocromocitoma-manejo anestésico perioperatorio en el adulto. De la pesadilla del anestesiólogo a la minimización de riesgos / No disponible

Los feocromocitomas son raros tumores neuroendocrinos con una presentación clínica muy variable, generalmente caracterizada por hipertensión arterial, cefalea y sudoración. Los pacientes con feocromocitoma pueden desarrollar complicaciones cardiovasculares potencialmente letales sin un adecuado manejo perioperatorio, incluidas miocardiopatía. Estas complicaciones son debidas a la secreción de catecolaminas. Durante el preoperatorio el enfermo debe ser preparado farmacológicamente para prevenir una crisis hipertensiva durante la cirugía. Tres periodos de tiempo intraoperatorio son los más críticos para el paciente: la intubación, la manipulación quirúrgica del tumor y la ligadura del drenaje venoso del tumor. Los dos primeros están relacionados con la liberación de catecolaminas, y el último a una deficiencia relativa de estas; esta etapa posterior a la resección del tumor se caracteriza por una hipotensión severa que requiere de cuidados anestesiológicos, ya que sus consecuencias pueden convertirse en complicaciones graves. El conocimiento de las alteraciones causadas por la secreción de catecolaminas así como de las opciones terapéuticas para el tratamiento resultan fundamentales para disminuir los riesgos en esta cirugía, la cual constituye un reto para el anestesiólogo (AU)

Pheochromocytomas are rare neuroendocrine tumors with a highly variable clinical presentation usually includes high blood pressure, headache and sweating. Patients with pheochromocytoma may develop potentially lethal cardiovascular complications without adequate perioperative management, including cardiomyopathy. These complications are due to the secretion of catecholamines. During the preoperative period the patient should be prepared pharmacologically to prevent a hypertensive crisis during surgery. Three intraoperative periods are the most critical for the patient: intubation, surgical manipulation of the tumor and ligation of venous drainage of the tumor. The first two are associated with catecholamine release, and the latter to a relative deficiency of these; this stage after tumor resection is characterized by a severe hypotension requiring anesthesiologic care as their consequences can become serious complications. Knowledge of the alterations caused by the secretion of catecholamines and therapeutic options for treatment are essential to reduce the risk in this surgery, which is a challenge for the anesthesiologist (AU)