scholarly journals Cats undergoing spay with medetomidine, ketamine and butorphanol develop arterial oxygen desaturation independent of surgical positioning and increased intraocular pressure in Trendelenburg position

2020 ◽  
Vol 162 (9) ◽  
pp. 539-550
Author(s):  
D Corona ◽  
E Ranninger ◽  
F Jörger ◽  
E Goldinger ◽  
A Stefan ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Oxygen Desaturation ◽  
Arterial Oxygen ◽  
Trendelenburg Position ◽  
Surgical Positioning

scholarly journals Arterial oxygen desaturation during sleep and atrial fibrillation

Heart ◽  
2006 ◽  
Vol 92 (12) ◽  
pp. 1854-1855 ◽  
Author(s):  
T Tanigawa ◽  
K Yamagishi ◽  
S Sakurai ◽  
I Muraki ◽  
H Noda ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Oxygen Desaturation ◽  
Arterial Oxygen

scholarly journals Systematic review and meta-analyses of trendelenburg and prone position on intraocular pressure in adult patients undergoing surgery

2019 ◽  
Author(s):  
◽  
Sharon Ann Van Wicklin
Keyword(s):  
Intraocular Pressure ◽  
Prone Position ◽  
Vision Loss ◽  
Meta Analysis ◽  
Adult Patients ◽  
Trendelenburg Position ◽  
Time Points ◽  
Comprehensive Search ◽  
Meta Analyses ◽  
Difference Effect

Background. Patients undergoing surgery in the Trendelenburg and prone positions may be at risk for postoperative vision loss associated with increased intraocular pressure. The purpose of this dissertation research is to estimate the magnitude of the increase in intraocular pressure at specific perioperative time points in adult patients undergoing surgery in the Trendelenburg and prone positions. Methods. Comprehensive search strategies were used to identify eligible studies for two meta-analyses and to address the research questions. For each meta-analysis, standardized mean difference effect sizes were calculated for selected perioperative time points. Results. Using a random effects model, the meta-analysis examining the effect of Trendelenburg position, showed that intraocular pressure decreased significantly after induction and before arousal. Intraocular pressure increased significantly after abdominal insufflation and during Trendelenburg position. The meta-analysis examining the effect of prone position, showed that intraocular pressure increased significantly between induction of anesthesia and up to 10 minutes of prone position and continued to increase significantly until the end of the prone position. Conclusions. Intraocular pressure increases of the magnitude found in this research demonstrate the need for implementing interventions to reduce the risk for postoperative vision loss in patients undergoing surgery in the Trendelenburg and prone positions.

Platypnoea-orthodeoxia syndrome: the importance of the patient’s posture for diagnosis

2021 ◽  
Vol 14 (6) ◽  
pp. e243210
Author(s):  
Carla Pereira Fontes ◽  
Samuel Barbosa Fonseca ◽  
Mário Santos
Keyword(s):  
Transthoracic Echocardiography ◽  
Rare Condition ◽  
Definitive Diagnosis ◽  
Clinical Suspicion ◽  
Oxygen Desaturation ◽  
Arterial Oxygen ◽  
Common Cause ◽  
Intracardiac Shunt ◽  
High Clinical Suspicion ◽  
Functional Components

Platypnoea-orthodeoxia syndrome (POS) is a rare condition characterised by the association of dyspnoea and arterial oxygen desaturation induced by standing and relieved by recumbency. The precise mechanism remains poorly understood, but it appears to involve both anatomical and functional components producing a significant right-to-left shunting under certain postural conditions. This syndrome is associated with either intracardiac or extracardiac aetiologies, and the diagnosis depends on high clinical suspicion. Intracardiac shunt is the most common cause of POS and can be identified through echocardiography with bubble study. We report the case of a patient with POS secondary to a paradoxical shunt through the patent foramen oval, whose definitive diagnosis was only possible with contrasted transthoracic echocardiography in the sitting and standing positions.

Preoperative Brimonidine Tartrate 0.2% Does not Prevent an Intraocular Pressure Rise During Prostatectomy in Steep Trendelenburg Position

2018 ◽  
Vol 27 (11) ◽  
pp. 965-970 ◽  
Author(s):  
David J. Mathew ◽  
Rana A. Greene ◽  
Yousaf J. Mahsood ◽  
Numan Hallaji ◽  
Ana M.B. Vargas ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Pressure Rise ◽  
Trendelenburg Position ◽  
Steep Trendelenburg Position ◽  
Brimonidine Tartrate
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