The Experts below are selected from a list of 120 Experts worldwide ranked by ideXlab platform
Hilary P. Grocott - One of the best experts on this subject based on the ideXlab platform.
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From the Journal archives: Airway closure and lung volumes in Surgical Positions.
Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2014Co-Authors: Hilary P. GrocottAbstract:Authors Douglas B. Craig, W.M. Wahba, Hillary Don Citation Can Anaesth Soc J 1971; 18: 92-9. Purpose Surgery and anesthesia expose patients to moderate and sometimes extreme positioning changes that are often unphysiological. The purpose of this article is to highlight and contextualize a seminal study from the Journal archives that explores the effect of several commonly utilized Surgical Positions (supine, Trendelenburg and lithotomy) and age on basic lung volumes as well as the volume at which small airway closure (AC) (also known as closing volume [CV]) occurs. These factors were examined with the aim of determining which patient position variables could be of clinical significance to gas exchange in the perioperative period. Principal findings This work showed that supine positioning, when compared with the seated position, results in a decrease of all lung volumes and capacities, including functional residual capacity (FRC) and CV. Trendelenburg positioning further decreases FRC, with no further changes induced by lithotomy positioning. Age is a clinically important factor in AC, occurring within the tidal volume range at a lower age when supine as compared with the seated position. Conclusions 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.
Tatsuhiko Kano - One of the best experts on this subject based on the ideXlab platform.
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sequential changes of arterial oxygen tension in the supine position during one lung ventilation
Anesthesia & Analgesia, 2000Co-Authors: Seiji Watanabe, Eiko Noguchi, Shinichi Yamada, Nobuya Hamada, Tatsuhiko KanoAbstract:To investigate how Surgical Positions affect the severity and progress of hypoxemia during one-lung ventilation (OLV), we studied 33 adult patients undergoing right thoracotomy with left OLV. The patients were divided into three groups according to the Positions during surgery as follows: the supine
Guangjian Zhang - One of the best experts on this subject based on the ideXlab platform.
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Application of panning axial turnover in placement of Surgical Positions before thoracic surgery
The Journal of practical nursing, 2019Co-Authors: Kun Fan, Jinteng Feng, Xiaopeng Wen, Linjuan Zhang, Guangjian ZhangAbstract:Objective To evaluate the application of panning axial turnover in placement of Surgical Positions before thoracic surgery. Methods From June 2017 to September 2017, altogether 140 patients who underwent thoracic surgery were enrolled in and randomly divided into two groups: the observation group and the control group. The control group was treated with traditional turnover method, while the observation group were treated with axial turnover. Results No significant changes were found in blood pressure, heart rate and respiratory rate (P>0.05) after turning over. There was no significant difference between the observation group and the control group about turn over time, (7.06±0.78)s vs. (7.01±0.81)s (P>0.05). The subjective evaluation results of the medical staff in the observation group were significantly better than those of the control group (Z=-7.111, P
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application of panning axial turnover in placement of Surgical Positions before thoracic surgery
The Journal of practical nursing, 2019Co-Authors: Kun Fan, Jinteng Feng, Xiaopeng Wen, Linjuan Zhang, Guangjian ZhangAbstract:Objective To evaluate the application of panning axial turnover in placement of Surgical Positions before thoracic surgery. Methods From June 2017 to September 2017, altogether 140 patients who underwent thoracic surgery were enrolled in and randomly divided into two groups: the observation group and the control group. The control group was treated with traditional turnover method, while the observation group were treated with axial turnover. Results No significant changes were found in blood pressure, heart rate and respiratory rate (P>0.05) after turning over. There was no significant difference between the observation group and the control group about turn over time, (7.06±0.78)s vs. (7.01±0.81)s (P>0.05). The subjective evaluation results of the medical staff in the observation group were significantly better than those of the control group (Z=-7.111, P<0.01) and the shift rate of double-lumen endotracheal tube in the observation group was 3.7% (2/54), which was significantly lower than 21.6% (11/51) of the control group (χ2=6.158, P<0.05). Conclusions The panning axial turnover properly guided the turn-over work with the principle of human body mechanics, which was more labor-saving and requires less operators. Besides, the panning axial turnover effectively reduced the double-lumen tracheal intubation shift rate. It′s worthy of clinical promotion. Key words: Surgical turnover; Surgical position; Lateral position; Thoracic surgery
Chungpei Chang - One of the best experts on this subject based on the ideXlab platform.
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left internal iliac artery and vein tear during microendoscopic lumbar discectomy a case report
Minimally Invasive Therapy & Allied Technologies, 2006Co-Authors: Chungpei ChangAbstract:As minimally invasive techniques have gained popularity across Surgical specialties, microendoscopic discectomy has been hailed as one of the newest and best methods for disc removal. Although problems are unusual and infrequent, the complications that can be associated with this procedure should be realized. Iatrogenic major vascular injury is a rare but serious complication during microendoscopic discectomy, and early detection is difficult due to the Surgical Positions, the specific anatomy of the spine, and the subtle changes of signs and symptoms the patient manifests. Here, we present a female patient who suffered from left internal iliac artery and vein tear during microendoscopic lumbar discectomy. We conclude that both surgeons and anesthesiologists should be aware of the possibility of this complication during surgery. When this complication occurs, it is vitally important that the correct crisis resolution protocols, such as proper massive transfusion algorithm and successful Surgical intervent...
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left internal iliac artery and vein tear during microendoscopic lumbar discectomy a case report
Minimally Invasive Therapy & Allied Technologies, 2006Co-Authors: Chungpei Chang, Weishih Lee, Shuchuan LeeAbstract:As minimally invasive techniques have gained popularity across Surgical specialties, microendoscopic discectomy has been hailed as one of the newest and best methods for disc removal. Although problems are unusual and infrequent, the complications that can be associated with this procedure should be realized. Iatrogenic major vascular injury is a rare but serious complication during microendoscopic discectomy, and early detection is difficult due to the Surgical Positions, the specific anatomy of the spine, and the subtle changes of signs and symptoms the patient manifests. Here, we present a female patient who suffered from left internal iliac artery and vein tear during microendoscopic lumbar discectomy. We conclude that both surgeons and anesthesiologists should be aware of the possibility of this complication during surgery. When this complication occurs, it is vitally important that the correct crisis resolution protocols, such as proper massive transfusion algorithm and successful Surgical interventions, be applied immediately during the critical period.
L. Venkatraghavan - One of the best experts on this subject based on the ideXlab platform.
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Effect of different Surgical Positions on the cerebral venous drainage: a pilot study using healthy volunteers.
Anaesthesia, 2016Co-Authors: Tze Yeng Yeoh, A. Tan, P. Manninen, Vincent W. S. Chan, L. VenkatraghavanAbstract:Excessive neck flexion and rotation in certain Surgical Positions may cause kinking of the internal jugular vein that obstructs cerebral venous blood flow and results in elevated intracranial pressure. The objective of this study was to measure internal jugular vein flow and identify potential impediments to venous flow in supine, prone, and park bench Positions using non-anaesthetised volunteers. Twenty-seven volunteers were recruited. Venous flow rate was derived from ultrasound measurements of the vessel cross-sectional area and flow velocity. Change from supine to prone position produced a significant increase in both jugular vein cross-sectional areas without affecting venous flows. In the right park bench position, the right internal jugular vein cross-sectional area decreased from 1.2 to 0.9 cm(2) (p = 0.027) without substantive changes in mean venous flow rate (p = 0.91) when compared with supine. In summary, the internal jugular vein flow was not compromised by either prone or park bench Positions in non-anaesthetised volunteers, and careful positioning may prevent kinking of the jugular vein. Further studies in anaesthetised and ventilated patients are needed to validate these results for clinical practice.