Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Randomized Controlled Trial Comparative Study
Increase in intraocular pressure is less with propofol than with sevoflurane during laparoscopic surgery in the steep Trendelenburg position.
Intraocular pressure is increased during laparoscopic surgeries performed in a steep Trendelenburg position. This study compared the effects of propofol with those of sevoflurane on intraocular pressure in patients undergoing robot-assisted laparoscopic radical prostatectomy in a 30° Trendelenburg position. ⋯ Intraocular pressure increases after pneumoperitoneum and the steep Trendelenburg position are established. This increase is less with propofol than with sevoflurane anesthesia. This trial was registered at ClinicalTrials.gov: NCT01744262.
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Aortic dissection is an infrequent but serious condition that often requires immediate operative intervention. We explore recent developments in the classification of aortic dissection and perioperative transesophageal echocardiography that assist with quantifying the severity of disease and facilitate its management. ⋯ Developments in the classification of aortic dissection have improved our perspective and understanding of the key presenting features that affect mortality. Improvements in patient outcome may be achieved in part by appropriately timed echocardiography-guided surgery.
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Observational Study
The utility of transthoracic echocardiography to confirm central line placement: An observational study.
Ultrasound visualization of neck vessels is the standard method used to assist with internal jugular vein (IJV) central line placement. Nevertheless, this practice has not eliminated the risk of carotid puncture and/or inadvertent arterial cannulation. Transesophageal echocardiography (TEE) effectively verifies wire placement within the heart but is invasive and not always available. We examined the feasibility and potential utility of using transthoracic echocardiography (TTE) to verify the distal wire in the right atrium (RA) before dilation and cannulation of the IJV. ⋯ Transthoracic echocardiography [corrected] is a feasible, noninvasive, and potentially useful method to confirm appropriate placement of the guidewire before dilation and cannulation of the IJV.
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Comment
From the Journal archives: Be alert to the risk of unexpected prolonged postoperative hypoxemia!
In 1978, Drs. R Knill and A. Gelb published the results of a study to measure the effect of subanesthetic levels of halothane on the ability of fit volunteers to respond to sustained hypoxia, and to determine how long potentially hazardous levels of halothane persist after a brief non-complex surgical procedure in healthy patients. The purpose of this commentary is to highlight the historical context of their findings and the impact of their work on our modern day practice of anesthesia. ⋯ Subanaesthetic halothane: Its effect on regulation of ventilation and relevance to the recovery room. Can Anaesth Soc J 1978; 25: 488-94.
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Douglas B. Craig, W.M. Wahba, Hillary Don ⋯ The work of Drs. D. Craig et al. published in the Journal more than 40 years ago was seminal to our understanding of how patient positioning has an important influence on lung volumes and on the age-related relationship between FRC and CV.