Succinylcholine and mivacurium are degraded more slowly in patients with a qualitatively or quantitatively reduced plasma cholinesterase and are therefore known for inducing a prolonged postoperative apnea. Perioperative laboratory screening even including plasma cholinesterase activity testing will not prevent this due to a possible aberration only in the qualitative cholinesterase activity. This is illustrated by introducing two cases reports of prolonged apnea after administration of mivacurium or succinylcholine. The pathophysiology of plasma cholinesterase is reviewed including genetically determined variants and the degradation pathways of mivacurium and succinylcholine. Only extensive laboratory chemical tests are sufficient to prevent this possible complication. Due to the rare incidence there is no evidence for recommending these laboratory investigations in all patients. Once prolonged apnea occurs following the administration of mivacurium or succinylcholine the best choice is ongoing ventilation combined with a sufficient sedation.
Maintaining the safety procedures the bilateral endobronchial intubation is an important and successful method in carina near tracheal rupture, perioperatively and for long-term ventilation.
The severity of the pulmonary hypoplasia is related to the duration of lung compression by the herniated organs. The time elapsing until the development of lung hypoplasia is shorter than expected. Tracheal occlusion seems to be an effective strategy for treatment of the defect CDH, but the best technique for achieving occlusion, and particularly the ideal point in time to carry out "Fetendo," are unknown. Further research into this congenital illness is required in order to treat it.
Decreasing pressure variation might indicate that lung growth has stopped and that the ideal point of time to remove the balloon is achieved. Increasing pressure has to be related to the morphometric analysis of the lung's structural development and maturation, comparing the efficacy of FETO in preventing or reversing pulmonary hypoplasia. Further investigation of continuous telemetric monitoring of tracheal pressure in the fetal lamb is required.
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