Embolia gasosa venosa inadvertida durante cesariana: bolsas retráteis ​​para líquidos intravenosos sem saídas autovedantes oferecem riscos. Relato de caso / Inadvertent venous air embolism during cesarean section: collapsible intravenous fluid bags without self-sealing outlet have risks. Case report / Embolia gaseosa venosa inadvertida durante cesárea: bolsas retráctiles para líquidos intravenosos sin salida de autosellado ofrecen riesgos. Relato de caso

O anestesiologista deve estar ciente das causas, do diagnóstico e do tratamento de embolia venosa e adotar padrões de prática para prevenir sua ocorrência. Embora a embolia gasosa seja uma complicação conhecida da cesariana, descrevemos um caso raro de desatenção que causou embolia gasosa iatrogênica quase fatal durante uma cesariana sob raquianestesia. uma das razões para o uso de bolsas autorretráteis para infusão em vez dos frascos convencionais de vidro ou plástico é a precaução contra embolia gasosa. Também demonstramos o risco de embolia venosa com o uso de dois tipos de bolsas plásticas retráteis (à base de cloreto de polivinil [PVC] e de polipropileno) para líquidos intravenosos. As bolsas para líquidos sem saídas autovedantes apresentam risco de embolia gasosa se o sistema de fechamento estiver quebrado, enquanto a flexibilidade da bolsa limita a quantidade de entrada de ar. bolsas à base de pvc, que têm mais flexibilidade, apresentam risco significativamente menor de entrada de ar quando o equipo de administração intravenosa (IV) é desconectado da saída. usar uma bolsa pressurizada para infusão rápida sem verificar e esvaziar todo o ar da bolsa IV pode ser perigoso.

The anesthesiologist must be aware of the causes, diagnosis and treatment of venous air embolism and adopt the practice patterns to prevent its occurrence. Although venous air embolism is a known complication of cesarean section, we describe an unusual inattention that causes iatrogenic near fatal venous air embolism during a cesarean section under spinal anesthesia. One of the reasons for using self-collapsible intravenous (IV) infusion bags instead of conventional glass or plastic bottles is to take precaution against air embolism. We also demonstrated the risk of air embolism for two kinds of plastic collapsible intravenous fluid bags: polyvinyl chloride (PVC) and polypropylene-based. Fluid bags without self-sealing outlets pose a risk for air embolism if the closed system is broken down, while the flexibility of the bag limits the amount of air entry. PVC-based bags, which have more flexibility, have signifi cantly less risk of air entry when IV administration set is disconnected from the outlet. Using a pressure bag for rapid infusion can be dangerous without checking and emptying all air from the IV bag.

El anestesiólogo debe de estar consciente de las causas, del diagnóstico y del tratamiento de la embolia venosa, y adoptar los estándares de práctica para prevenir su aparecimiento. Aunque la embolia gaseosa sea una complicación conocida de la cesárea, describimos aquí un caso raro de falta de atención que causó embolia gaseosa iatrogénica casi fatal durante una cesárea bajo raquianestesia. Una de las razones para el uso de bolsas autoretráctiles para infusión en vez de los frascos convencionales de vidrio o plástico, es la precaución contra la embolia gaseosa. También demostramos riesgo de embolia venosa con el uso de dos tipos de bolsas plásticas retráctiles (a base de cloruro de polivinil [PVC] y de polipropileno) para líquidos intravenosos. Las bolsas para líquidos sin salidas de autosellado, tienen un riesgo de embolia gaseosa si el sistema de cierre está roto, mientras la flexibilidad de la bolsa limita la cantidad de entrada de aire. Bolsas hechas a base de PVC, y que tienen más flexibilidad, también tienen un riesgo signifi cativamente menor de entrada de aire cuando el equipo de administración intravenosa (IV) se apaga en la salida. Usar una bolsa de presión para la infusión rápida sin verifi car y vaciar todo el aire de la bolsa IV puede ser peligroso.

effect of low dose rocuronium on intraocular pressure in laryngeal mask airway usage

We have compared the effect of low dose rocuronium on intraocular pressure [IOP] in larygeal mask airway usage during induction of anesthesia using propofol and fentanyl, in a randomized, double-blind study. We studied 30 patients randomly allocated to one of two groups. Anesthesia was induced with fentanyl 1 mg kg[-1] and propofol 2 mg kg[-1] until loss of eyelash reflex. This was followed by rocuronium 0,3 mg kg[-1] [group R, n=15] and normal saline [group S, n=15]. IOP was measured with Schiotz tonometry device preoperatively [IOP[pre]] and after propofol infection [IOP[0]] and immediately after LMA insertion [IOP[1]], 1. [IOP[2]], 2. [IOP[3]], 3. [IOP[4]], 4. [IOP[5]] and 15. [IOP[15]] minutes after laryngeal mask airway [LMA] insertion and after extubation [IOP[ext]]. The collected data were heart rate [HR], oxygen saturation [SpO[2]], end-tidal carbon-dioxide pressure [ETCO[2]] and mean arterial pressure [MAP]. After LMA insertion significant decrease was found in IOP in both groups. No significant difference was found between groups. Although there have been reports that LMA insertion minimally increases IOP, in our study, by using low dose rocuronium and LMA there was a decrease in IOP

Unexpected postoperative seizure after mastoid surgery. A case report

Postoperative seizures [expected after neurosurgery] are rare events. When they do occur, they are usually attributable to an identifiable drug reaction, a metabolic or neurological event. We report a case of postoperative seizure in postanesthesia care unit. A 19-yr-old female, 48 kg, was admitted to a hospital for left middle-ear surgery. Her medical history, physical examination and laboratory evaluation were normal. Anesthesia was induced with fentanyl 1 micro g/kg, thiopental 5 mg/kg and rocuronium 0.5 mg/kg to produce neuromuscular blockade. Anesthesia was initially maintained with oxygen, nitrous oxide and sevoflurane. Mastoid surgery was completed in 195 minutes after induction. The patient was extubated, but approximately 10 minutes after arrival in recovery she started to generalized tonic clonic convulsion. Oxygen was administered by face mask and thiopental 100 mg was administered intravenously. Blood sugar, electrolytes and body temperature were normal. After ten minutes convulsion episode was repeated. Because of the continuing seizure activity in a patient at risk of pulmonary aspiration and security of air way, her trachea was intubated by using thiopental and succinylcholine and ventilation controlled artificially. The seizures were controlled with midazolam and phenytoin. Computerized tomography [CT] showed left temporal cortical suspected hipodensity [Fig. 1] and the patient was transferred to ICU