Revista espanola de anestesiologia y reanimacion最新文献

Introduction

Pulmonary atelectasis is common in patients undergoing laparoscopic abdominal surgery under general anaesthesia, which increases the risk of perioperative respiratory complications. Alveolar recruitment manoeuvres (ARM) are used to open up the lung parenchyma with atelectasis, although the duration of their benefit has not been clearly established. The aim of this study was to determine the effectiveness of an ARM in laparoscopic colon surgery, the duration of response over time, and its haemodynamic impact.

Methods

Twenty-five patients undergoing laparoscopic colon surgery were included. After anaesthetic induction and initiation of surgery with pneumoperitoneum, an ARM was performed, and then optimal PEEP determined. Respiratory mechanics and gas exchange variables, and haemodynamic parameters, were analysed before the manoeuvre and periodically over the following 90 min.

Results

Three patients were excluded for surgical reasons. The alveolar arterial oxygen gradient went from 94.3 (62.3−117.8) mmHg before to 60.7 (29.6−91.0) mmHg after the manoeuvre (P < .05). This difference was maintained during the 90 min of the study. Dynamic compliance of the respiratory system went from 31.3 ml/cmH₂O (26.1–39.2) before the manoeuvre to 46.1 ml/cmH₂O (37.5−53.5) after the manoeuvre (P < .05). This difference was maintained for 60 min. No significant changes were identified in any of the haemodynamic variables studied.

Conclusion

In patients undergoing laparoscopic colon surgery, performing an intraoperative ARM improves the mechanics of the respiratory system and oxygenation, without associated haemodynamic compromise. The benefit of these manoeuvres lasts for at least one hour.

Background and objectives

The harmful effects of excess fluids frequently manifest in the lungs. Thoracic fluid content (TFC) is a variable provided by the STARLINGTM bioreactance monitor, which represents the total volume of fluid in the chest. The objective is to analyse the association between the variation in TFC values (TFCd0%) at 24 h postoperatively, postoperative fluid balance, and postoperative pulmonary complications.

Material and methods

Prospective and analytical observational study. Patients scheduled for major abdominal surgery at a tertiary teaching hospital were included. They were monitored during the intervention and the first 24 postoperative hours with the monitor. STARLINGTM, measuring TFC and its variation in different stages of the perioperative period. Serial lung ultrasounds were performed and postoperative pulmonary complications were recorded. Logistic regression was performed to predict the occurrence of atelectasis and pulmonary congestion. The Pearson correlation coefficient was calculated to verify the association between TFC and fluid balance.

Results

50 patients were analyzed. TFCd0% measured on the morning of the first postoperative day increased by a median of 27.1% [IQR: 20.3–37.5] and was correlated at r = 0.44 with the postoperative balance of 677 ml [IQR: 125.5−1,412]. Increased TFC was related to a higher risk of atelectasis (OR = 1.24) and pulmonary congestion (OR = 1.3).

Conclusions

TFCd0% measured 24 h after surgery presents a moderate correlation with postoperative fluid balance. Its increase is a risk factor for the appearance of postoperative pulmonary complications.

A 61-year-old man with no predisposition to thrombosis underwent sequential double lung transplantation without extracorporeal membrane oxygenation (ECMO) support due to terminal stage COPD. After implantation and reperfusion of both lungs, a complete transoesophageal echocardiography study was performed to check the pulmonary venous anastomosis. The study showed a large, heterogeneous, dense, hyperechoic free-floating mass in the left atrium compatible with a clot in transit from the pulmonary circulation. The surgical team were notified of this finding so that they could reopen the anastomosis and remove the clot to prevent a major complication. There were no clinical manifestations when the patient was awakened.

Hysteroscopy is an exploratory endoscopic technique that studies the interior of the uterine cavity and the endocervical canal. Various fluids, such as physiological saline, are used to optimise visualisation of the internal structures during this procedure. A rare complication of hysteroscopy is fluid overload, which can be associated with intravascular absorption syndrome, usually after lengthy procedures or tissue dissection. There are no data on the incidence and prevalence of this syndrome, and few cases involving physiological saline solution have been reported. We present a case of hysteroscopic myomectomy complicated by vascular absorption syndrome, which gave rise to acute pulmonary oedema that required admission to the intensive care unit.

The Airway Management section of the Spanish Society of Anesthesiology, Resuscitation, and Pain Therapy (SEDAR), the Spanish Society of Emergency Medicine (SEMES), and the Spanish Society of Otorhinolaryngology and Head and Neck Surgery (SEORL-CCC) present the Guide for the comprehensive management of difficult airway in adult patients. Its principles are focused on the human factors, cognitive processes for decision-making in critical situations, and optimization in the progression of strategies application to preserve adequate alveolar oxygenation in order to enhance safety and the quality of care. The document provides evidence-based recommendations, theoretical-educational tools, and implementation tools, mainly cognitive aids, applicable to airway management in the fields of anesthesiology, critical care, emergencies, and prehospital medicine. For this purpose, an extensive literature search was conducted following PRISMA-R guidelines and was analyzed using the GRADE methodology. Recommendations were formulated according to the GRADE methodology. Recommendations for sections with low-quality evidence were based on expert opinion through consensus reached via a Delphi questionnaire.

The Airway Management section of the Spanish Society of Anesthesiology, Resuscitation, and Pain Therapy (SEDAR), the Spanish Society of Emergency Medicine (SEMES), and the Spanish Society of Otorhinolaryngology and Head and Neck Surgery (SEORL-CCC) present the Guide for the comprehensive management of difficult airway in adult patients. Its principles are focused on the human factors, cognitive processes for decision-making in critical situations, and optimization in the progression of strategies application to preserve adequate alveolar oxygenation in order to enhance safety and the quality of care. The document provides evidence-based recommendations, theoretical-educational tools, and implementation tools, mainly cognitive aids, applicable to airway management in the fields of anesthesiology, critical care, emergencies, and prehospital medicine. For this purpose, an extensive literature search was conducted following PRISMA-R guidelines and was analyzed using the GRADE methodology. Recommendations were formulated according to the GRADE methodology. Recommendations for sections with low-quality evidence were based on expert opinion through consensus reached via a Delphi questionnaire.

This meta-analysis was done to investigate the role of intrathecal midazolam in lower limb surgeries regarding prolongation of spinal block, postoperative pain control and associated side effects. The included studies reported onset and duration of sensory and motor block, time to first request analgesia, 24 h opioid consumption, postoperative pain control, and associated side effects following use of intrathecal midazolam for lower limb surgeries. This review was performed following the PRISMA guidelines and using the online databases, Medline, Science Direct, Google scholar and Cochrane library. We registered this review with the PROSPERO database (ID-CRD42022346361) in August 2022. A total of 10 randomised controlled trials were included in this meta-analysis.

Our results showed patients receiving 1 mg intrathecal midazolam showed significantly faster onset of sensory block [P = .001 (CI: −0.98, −0.31)]. Duration of sensory and motor block were also significantly prolonged in intrathecal midazolam group [P < .00001 (CI: 18.08, 39.12), P = .002 (CI: 0.45, 2). Intrathecal midazolam also increased the time to first request analgesia [P = .0003, (CI: 1.22, 4.14)]. Pain scores at 4 and 12 h postoperatively were significantly lower in patients receiving intrathecal midazolam [P = .00001 (CI: −1.20, −0.47) and P = .05 (CI: −0.52, −0.01) respectively]. In conclusion, the addition of intrathecal midazolam to local anesthetics in lower limb surgeries results in early onset of sensory and motor block. It also increases the duration of sensory and motor block. The time to first request analgesia is increased. VAS pain scores at 4 and 12 h postoperatively were also lower without any increased side effects.