Neumomediastino espontáneo en un paciente con COVID-19. Reporte de caso / Spontaneous Pneumomediastinum in a Patient With COVID-19. Case Report

Resumen Dentro de las distintas complicaciones que se han descrito en pacientes con neumonía viral por SARS-CoV-2 tiene especial interés clínico el neumomediastino espontáneo (NE), por tratarse de una condición rara reportada en aproximadamente 1% de los pacientes con COVID-19. Se define por la presencia de aire en el mediastino en pacientes sanos o en ausencia de algún origen iatrogénico o traumático. Su presentación clínica suele ser insidiosa y puede acompañarse de otras complicaciones respiratorias. Presentamos el caso de un paciente con COVID-19 que durante su hospitalización desarrolló NE asociado a enfisema en regiones extratorácicas. No hubo presencia de enfisema subcutáneo ni neumotórax.

Abstract Among the different complications that have been described in patients with viral pneumonia due to SARS-CoV-2, spontaneous pneumomediastinum (SP) is of special clinical interest, as it is a rare condition reported in approximately 1% of patients with COVID-19. It is defined by the presence of air in the mediastinum in healthy patients or in the absence of any iatrogenic or traumatic origin. Its clinical presentation is usually insidious and may be accompanied by other respiratory complications. We present the case of a patient with COVID-19 who developed SP associated with emphysema in extrathoracic regions during hospitalization. There was no presence of subcutaneous emphysema or pneumothorax.

Complicaciones respiratorias en el posoperatorio de cirugía cardíaca en adultos / Respiratory complications in the postoperative period of cardiac surgery in adults / Complicações respiratórias no pós-operatório de cirurgia cardíaca em adultos

Resumen: Todos los pacientes que cursan un posoperatorio de cirugía cardíaca desarrollan alteraciones respiratorias. Por esta razón, es muy importante la implementación de todas las medidas tendientes a minimizar el impacto de estas. El verdadero desafío consiste en la detección precoz de dichas complicaciones y el desarrollo de estrategias terapéuticas tempranas con el objetivo de minimizar su impacto. En el presente trabajo, se analizan las principales complicaciones respiratorias en el escenario del posoperatorio de cirugía cardíaca y las acciones terapéuticas correspondientes.

Summary: All patients who undergo cardiac surgery develop respiratory disorders in the postoperative period. It is very important to implement all measures to minimize the impact of these alterations. The real challenge consists in the early detection of complications and the development of early therapeutic strategies in order to minimize their impact. In the present study, the main respiratory complications in the postoperative setting of cardiac surgery, and the corresponding therapeutic actions, are analyzed.

Resumo: Todos os pacientes submetidos à cirurgia cardíaca desenvolvem distúrbios respiratórios no pós-operatório. É muito importante implementar todas as medidas para minimizar o impacto dessas alterações. O verdadeiro desafio consiste na detecção precoce das complicações e no desenvolvimento de estratégias terapêuticas precoces de forma a minimizar o seu impacto. No presente trabalho, são analisadas as principais complicações respiratórias no pós-operatório de cirurgia cardíaca e as respectivas ações terapêuticas.

Disfunções respiratórias em portadores de doença de Parkinson: revisão sistemática / Respiratory Dysfunction in patients with Parkinson's disease: systematic review

A Doença de Parkinson (DP) é uma patologia neurodegenerativa, lentamente progressiva. As alterações posturais típicas da DP, associado à rigidez dos músculos intercostais, comprometem a mobilidade da caixa torácica, repercutindo na diminuição da expansibilidade pulmonar na inspiração e da depressão torácica na expiração. A dinâmica respiratória é afetada pela diminuição da força dos músculos respiratórios, a qual leva a atelectasia, hipoxemia e insuficiência ventilatória. OBJETIVO: Identificar através de revisão sistemática quais as disfunções respiratórias na doença de Parkinson. MATERIAS e MÉTODOS: trata-se de um estudo de Revisão Sistemática, sobre as disfunções respiratórias na doença de Parkinson. Foram realizadas buscas nas bases de dados, Medline, PubMED, Lilacs, SciELO, Scopus não foi imposta restrição de idiomas para pesquisa. Para critério de inclusão foram selecionados estudos que relataram as disfunções respiratórias na DP, desenvolvidos nos últimos 10 anos. A qualidade metodológica dos estudos foi analisada utilizando a escala de PEDro. RESULTADOS: Na buscar iniciada no período de 2009 a outubro de 2019, foram incluídos 10 artigos nesta revisão sistemática que demostraram as disfunções respiratórias na doença de Parkinson. CONCLUSÃO: Os estudos demostraram que a doença de Parkinson apresenta diminuição do volume expiratório forçado no primeiro segundo, diminuição da capacidade vital forçada, aumento do volume residual e resistências das vias aéreas.

Parkinson's disease (PD) is a slowly progressive neurodegenerative disorder, being the characteristic neurological sign of the loss of dopaminergic neurons in the compact part of substantia nigra, causing and unknown and affecting elderly people over 65 years. The clinical features published in PD are used for signs and symptoms such as tremor at rest, bradykinesia, hypokinesia, postural alteration, loss of postural reflexes and freezing phenomenon. Because typical postural changes in PD, associated with intercostal muscle stiffness, compromise rib cage mobility, decrease the impact on pulmonary expansion on inspiration, and thoracic changes in respiration, respiratory respiration is affected by respiratory muscle strength, occasionally respiratory muscle strength intercostal muscles stiffness and bradykinesia leading to atelectasis, hypoxemia and ventilatory insufficiency. OBJECTIVE: Identify, through systematic review, what are the respiratory dysfunctions in Parkinson's disease. MATERIALS AND METHODS: This is a systematic review study on respiratory dysfunction in Parkinson's disease. Searches were performed in the databases Medline, Pubmed, Lilacs, Scielo, and no language restrictions were imposed for research. For inclusion criteria, studies related to respiratory dysfunction in PD lasting 10 years were selected. The methodological quality of the studies was analyzed using a PEDro scale. RESULT: In the research initiated between 2009 and October 2019, 10 articles were included in this systematic review that demonstrated respiratory dysfunction in Parkinson's disease. CONCLUSION: Studies of Parkinson's disease showed decreased forced expiratory volume in one second, decreased forced vital capacity, increased residual volume and airway resistance.

Study of respiratory complications and outcome in meconium stained deliveries

Background: To study the development of respiratory complications in the form of meconium aspiration syndrome (MAS), persistent pulmonary hypertension of newborn (PPHN), pulmonary hemorrhage and pneumothorax in neonates born through meconium stained liquor.Methods: It was a prospective study conducted during the period of February to October 2018. All live babies associated with meconium stained liquor were included.Results: Total 606 neonates with meconium stained amniotic fluid (MSAF) were enrolled. Chance of meconium passage was more after 37wk of gestation, in birth weight >2.5 kg and in AGA babies. The rate of LSCS was higher in MSAF group. MAS developed in 28% cases, out of which 42.9% expired. PPHN developed in 6.9% cases, out of which 80% expired. 100% mortality was there in babies with pulmonary hemorrhage. Apgar scores <7 is significantly associated with the development of respiratory complications. 22.8% of vigorous babies and all non-vigorous babies developed respiratory complications showing statistical significance with P-value of <0.00001. Mortality in MSAF was 12%. All babies who expired had severe meconium aspiration syndrome. 83.9% of the patients stayed for <7 days in the hospital. All of the expiry except one occurred within 7 days of life due to development of respiratory complications.Conclusions: MSAF is associated with the development of respiratory complications and mortality in neonates. Non-vigorous babies and the babies with Apgar scores <7 at birth are more prone to developing respiratory complications. Most of the MSAF babies were discharged and mortality was more in patients with respiratory complications.

Factores de riesgo de complicaciones respiratorias en cirugía oncológica de mama con anestesia total intravenosa / Risk factors of respiratory complications in breast cancer surgery with total intravenous anesthesia

A prospective longitudinal cohort study was performed in patients with breast cancer operated surgically with the use of total intravenous anesthesia in the provincial hospital Carlos Manuel de Céspedes de Bayamo, from the Cauto region during the period from January 1 from 2014 to December 31, 2016, with the aim of identifying the risk factors hypothetically related to the appearance of respiratory complications. It was established that the exposed cohort was constituted by 79 patients who developed complications during the study period and met the inclusion criteria. The diagnosis of respiratory complications was made during the entire surgical procedure and finished. The magnitude of the associations was estimated by calculating the relative risks (RR) of complications. The age of the patient equal to or greater than 65 years, and smoking were the surgical risk factors depending on the patient related to the onset of respiratory complications in breast cancer surgery with total intravenous anesthesia, not alcoholism. Anemia, obesity, low weight and recent respiratory tract infection were surgical risk factors dependent on associated diseases related to the appearance of respiratory complications. The ASA III-IV classification and the surgical time of more than three hours were surgical risk factors related to surgery related to the appearance of respiratory complications.

Se realizó un estudio longitudinal prospectivo de cohorte en pacientes con cáncer de mama intervenidos quirúrgicamente con el empleo de anestesia total intravenosa en el hospital provincial "Carlos Manuel de Céspedes de Bayamo, procedentes de la región del Cauto durante el período comprendido desde el 1ro de enero de 2014 hasta 31 de diciembre de 2016, con el objetivo de identificar los factores de riesgo hipotéticamente relacionados con la aparición de complicaciones respiratorias. Se estableció que la cohorte expuesta estuvo constituida por 79 pacientes que desarrollaron complicaciones en el período de estudio y cumplieron con los criterios de inclusión. La evaluación del diagnóstico de complicaciones respiratorias se realizó durante todo el procedimiento quirúrgico y terminado éste. La magnitud de las asociaciones se estimó mediante el cálculo de los riesgos relativos (RR) de complicaciones. La edad de la paciente igual o superior a 65 años, y el tabaquismo fueron los factores de riesgo quirúrgico en función del enfermo relacionados con la aparición de complicaciones respiratorias en cirugía oncológica de mama con anestesia total intravenosa, no así el alcoholismo. La anemia, la obesidad, bajo peso y la infección reciente del tracto respiratorio fueron los factores de riesgo quirúrgico dependiente de enfermedades asociadas relacionados con la aparición de complicaciones respiratorias. La clasificación ASA III-IV y un tiempo quirúrgico superior a tres horas se constituyeron en los factores de riesgo quirúrgico en función de la cirugía relacionados con la aparición de complicaciones respiratorias.

Relationship between cigarette smoking and the carbon monoxide concentration in the exhaled breath with perioperative respiratory complications / Relação entre consumo de tabaco e concentração de monóxido de carbono na expiração com complicações respiratórias perioperatórias

Abstract 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. Methods One hundred and fifty two patients (smokers, Group S and non-smokers, Group NS), who underwent laparoscopic cholecystectomies under general anesthesia, were studied. Patients completed the Fagerstrom Test for Nicotine Dependence. The preoperative carbon monoxide level in the exhaled breath levels were determined using the piCO+ Smokerlyzer 12 h before surgery. Respiratory complications were recorded during induction of anesthesia, intraoperatively, during extubation, and in the recovery room. Results Statistically significant increases were noted in group S with respect to the incidence of hypoxia during induction of anesthesia, intraoperative bronchospasm, bronchodilator treatment intraoperatively, and bronchospasm during extubation. The carbon monoxide level in the exhaled breath and the Fagerstrom Test for Nicotine Dependence, and number of cigarettes smoked 12 h preoperatively were designated as covariates in the regression model. Logistic regression analysis of anesthetic induction showed that a 1 unit increase in the carbon monoxide level in the exhaled breath level was associated with a 1.16 fold increase in the risk of hypoxia (OR = 1.16; 95% CI 1.01-1.34; p = 0.038). Logistic regression analysis of the intraoperative course showed that a 1 unit increase in the number of cigarettes smoked 12 h preoperatively was associated with a 1.16 fold increase in the risk of bronchospasm (OR = 1.16; 95% CI 1.04-1.30; p = 0.007). While in the recovery room, a 1 unit increase in the Fagerstrom Test for Nicotine Dependence score resulted in a 1.73 fold increase in the risk of bronchospasm (OR = 1.73; 95% CI 1.04-2.88; p = 0.036). Conclusions Cigarette smoking was shown to increase the incidence of intraoperative respiratory complications while under general anesthesia. Moreover, the estimated preoperative carbon monoxide level in the exhaled breath level may serve as an indicator of the potential risk of perioperative respiratory complications.

Resumo Justificativa O objetivo deste estudo foi determinar os efeitos do tabagismo pré-operatório e o nível de monóxido de carbono no ar expirado sobre complicações respiratórias perioperatórias em pacientes submetidos a colecistectomias laparoscópicas eletivas. Métodos No total, 152 pacientes (Grupo F: fumantes; Grupo NF: não fumantes) submetidos a colecistectomias laparoscópicas sob anestesia geral foram avaliados. Os pacientes completaram o Teste para Dependência de Nicotina de Fagerstrom. Os níveis pré-operatórios de monóxido de carbono no ar expirado foram determinados usando o piCO + Smokerlyzer 12 h antes da cirurgia. As complicações respiratórias foram registradas durante a indução da anestesia, no intraoperatório, durante a extubação e na sala de recuperação. Resultados Aumentos estatisticamente significativos foram observados no Grupo F em relação à incidência de hipóxia durante a indução da anestesia, broncoespasmo intraoperatório, tratamento broncodilatador intraoperatório e broncoespasmo durante a extubação. O nível de monóxido de carbono no ar expirado, o Teste para Dependência de Nicotina de Fagerstrom e o número de cigarros fumados em 12 h no pré-operatório foram designados como covariáveis no modelo de regressão. A análise de regressão logística da indução anestésica mostrou que um aumento de uma unidade no nível de monóxido de carbono no ar expirado foi associado a um aumento de 1,16 vez do risco de hipóxia (OR = 1,16; IC de 95% 1,01-1,34; p = 0,038). A análise de regressão logística do período intraoperatório mostrou que um aumento de uma unidade no número de cigarros fumados em 12 h no pré-operatório foi associado a um aumento de 1,16 vez no risco de broncoespasmo (OR = 1,16; IC de 95% 1,04-1,30, p = 0,007). Enquanto na sala de recuperação, um aumento de uma unidade no escore do Teste para Dependência de Nicotina de Fagerstrom resultou em um aumento de 1,73 vez no risco de broncoespasmo (OR = 1,73; IC de 95% 1,04-2,88; p = 0,036). Conclusões O tabagismo mostrou aumentar a incidência de complicações respiratórias intraoperatórias sob anestesia geral. Além disso, o nível estimado de monóxido de carbono no ar expirado no pré-operatório pode servir como um indicador do risco em potencial de complicações respiratórias perioperatórias.

Inspirometria de incentivo e breath stacking: repercussões sobre a capacidade inspiratória em indivíduos submetidos à cirurgia abdominal / Incentive spirometry and breath stacking: effects on the inspiratory capacity of individuals submitted to abdominal surgery

CONTEXTUALIZAÇÃO: As complicações respiratórias são as principais causas de aumento da morbidade e da mortalidade em indivíduos submetidos à cirurgia de andar superior do abdômen. A eficácia dos procedimentos fisioterapêuticos precisa ser melhor definida, assim como é necessário o conhecimento da melhor estratégia terapêutica a ser implementada. OBJETIVO: Comparar o volume inspiratório mobilizado durante a técnica de breath stacking, com o volume na inspirometria de incentivo em pacientes submetidos à cirurgia abdominal. MATERIAIS E MÉTODOS: Doze pacientes, no primeiro dia de pós-operatório, foram orientados a inspirar profundamente por meio do inspirômetro de incentivo Voldyne® e a realizar esforços inspiratórios sucessivos pela máscara facial adaptada para realização da manobra de breath stacking. Cada técnica foi realizada cinco vezes de acordo com a randomização. No período pré-operatório, os pacientes realizaram prova espirométrica, foram avaliados e instruídos quanto à realização das técnicas. Um ventilômetro de Wright® permitiu o registro da capacidade inspiratória. RESULTADOS: A capacidade inspiratória foi significativamente maior durante o breath stacking do que durante a inspirometria de incentivo, tanto no pré quanto no pós-operatório. Houve redução significativa dos volumes após o procedimento cirúrgico, independentemente da técnica realizada. CONCLUSÕES: A técnica de breath stacking mostrou-se eficaz e superior à inspirometria de incentivo para a geração e sustentação de volumes inspiratórios. Por não haver descrição de efeitos adversos, essa técnica pode, provavelmente, ser utilizada de forma segura e eficaz, principalmente em pacientes pouco cooperativos.

BACKGROUND: Respiratory complications are the main causes of increased morbidity and mortality in individuals who undergo upper abdominal surgery. The efficacy of physical therapy procedures needs clarification, and it is necessary to know which therapeutic approaches are the best ones to implement. OBJECTIVE: To compare the inspiratory volume during the breath stacking maneuver with the volume during incentive spirometry, in abdominal surgery patients. METHODS: Twelve patients, on their first postoperative day, were instructed to take a deep breath through the VoldyneTM incentive spirometer and to make successive inspiratory efforts using a facemask that had been adapted for performing the breath stacking maneuver. Each technique was performed five times according to the randomization. Before the operation, the patients performed a spirometric test. They were also assessed and instructed about the procedures. A WrightTM ventilometer allowed inspiratory capacity to be recorded. RESULTS: The inspiratory capacity during breath stacking was significantly higher than during incentive spirometry, both before and after the operation. There was a significant reduction in volumes after the surgical procedure, independent of the technique performed. CONCLUSIONS: The breath stacking technique was shown to be effective. This technique was better than incentive spirometry for generating and sustaining inspiratory volumes. Since no adverse effects have been described, this technique can probably be used safely and effectively, particularly in uncooperative patients.

Postoperative Respiratory Management and Complications Prevention after Thymectomy in Patients with Myasthenia Gravis / 上海第二医科大学学报

Objective To evaluate the methods of postoperative respiratory management and complications prevention of patients with myasthenia gravis who received thymectomy. Methods According to the accumulated scores of myasthenic crisis prediction, the patients with myasthenia gravis who underwent thymectomy in the past 5 years were divided into 2 groups: high risk group(12, n=11). The time of mechanical ventilation, restoration of muscle strength and spontaneously breathing during extubation, results of arterial blood gas analysis, body temperature, chest X-ray examination and sputum culture of each patient were analyzed. Results The time of mechanical ventilation in high risk group (18~30 h, 26 h in average) was longer than that in control group(4~28 h, 14 h in average)(P

Discharge Decision-Making by Intensivists on Readmission to the Intensive Care Unit

Patients readmitted to the intensive care unit (ICU) have a significantly higher mortality rate. The role of intensivists in judging when to discharge patients from the ICU is very important. We undertook this study to evaluate the effect of the intensivists' discharge decision-making on readmission to ICU. The intensivists actively participated in the discharge decision-making, with the discharge guideline taken into consideration, in respect of group 1 patients, but not in respect of group 2. The readmission rate in group 1 was lower than that in group 2. The readmission in patients in each group was associated with higher mortality rates and longer lengths of stay at the ICU. Respiratory failure was the major cause of readmission. In the non-survivors out of the readmitted patients, the Acute Physiology and Chronic Health Evaluation (APACHE) III scores on the initial discharge and readmission, the multiple organ dysfunction syndrome (MODS) scores on the initial admission, discharge and readmission were higher than the corresponding indices in the survivors. We conclude that the readmission rate was lower when intensivists participated in the discharge decision-making, and that APACHE III and MODS scores on the first discharge and readmission were significant prognostic factors in respect of the readmitted patients.

Influence of Thoracic Epidural Analgesia on Postoperative Respiratory Complications in Esophageal Cancer Patients / 대한마취과학회지

BACKGROUND: Respiratory complications have been the main cause of death after a resection of esophageal cancer. This retrospective study was conducted to investigate the effect of thoracic epidural analgesia on respiratory complications after a resection of esophageal cancer. METHODS: This study enrolled two groups of patients undergoing an esophageal resection during a 7-year period. The first group (control group) was comprised of 105 patients in whom thoracic epidural analgesia was not used. The second group (epidural group) was comprised of 121 patients in whom thoracic epidural analgesia was done routinely. The latter group received an initial bolus of 0.1% bupivacaine 10 ml with 2 mg of morphine at the end of surgery and an infusion of 2 ml/hr of the solution comprised of 0.1% bupivacaine with 0.2 mg/ml morphine for 3 days. The incidence of respiratory complications and the duration of ventilator care and ICU stay were investigated by reviewing of charts. RESULTS: There were no significant differences in the incidence of respiratory complications and the duration of ventilator care and ICU stay in both groups. CONCLUSIONS: The results of this study suggest that the routine use of thoracic epidural analgesia did not reduce the incidence of respiratory complications after resection of esophageal cancer.

Earlier application of the breathing volumetric exerciser to improve the lung function of patient after OPCAB / 重庆医科大学学报

Objective:To study the earlier application of the breathing volumetric exerciser to improve the lung function and prevent the respiratory complications of the postoperative patient of OPCAB.Methods:80 patients were randomly divided into following groups:group A,with breathing exercise;group B, control group.Results:Compared with group B the maximal inspiratory capacity in group A increased significantly(P