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Dual lumen endotracheal tube

Li-Huan Zhu, Quan Du, Long Chen, Shengsheng Yang, Yuanrong Tu, Shengping Chen, Weisheng Chen
OBJECTIVES: Thoracic sympathectomy is considered the most effective method to treat palmar hyperhidrosis. We developed a novel approach for thoracic sympathectomy in patients with palmar hyperhidrosis through the umbilicus, using an ultrathin gastroscope. The aim of this study was to evaluate the continuing efficacy and patient satisfaction of this innovative surgery. METHODS: All procedures were performed under general anesthesia and the patients were intubated with a dual-lumen endotracheal tube...
January 2014: Journal of Thoracic and Cardiovascular Surgery
Weisheng Chen, Long Chen, Lihuan Zhu, Shengsheng Yang, Xuegang Feng, Jixue Zhang, Xianjin Cheng, Daoming Liu, Wen Wang
BACKGROUND: Primary palmar hyperhidrosis is very common in women. Video-assisted thoracic sympathectomy is recognized as an effective treatment for patients with severe hyperhidrosis, which has usually been performed with more than 2 skin incisions. We developed a novel approach for thoracic sympathectomy in women with palmar hyperhidrosis through the umbilicus using an ultrathin gastroscope. The approach requires only 1 tiny incision, which is hidden in the umbilicus. METHODS: Under general anesthesia, patients were intubated with a dual-lumen endotracheal tube...
December 2013: Annals of Thoracic Surgery
Jixue Zhang, Lihuan Zhu, Shengsheng Yang, Long Chen, Dazhou Li, Heping Zheng, Weisheng Chen
OBJECTIVES: Thoracoscopic sympathectomy is an effective treatment for palmar hyperhidrosis. Current methods are associated with risks of chronic neuropathic pain and a visible chest scar. We developed a novel surgical technique for the performance of sympathectomy by embryonic natural orifice transumbilical endoscopic surgery with a flexible endoscope in a porcine model. METHODS: Transumbilical flexible endoscopic thoracic sympathectomies were performed in seven farm pigs (three acute and four 4-week survivals)...
July 2013: Interactive Cardiovascular and Thoracic Surgery
Robert M DiBlasi, David Crotwell, Jeremy M Geiduscheck, Peter Richardson, Austin Smith, John W Salyer, Margaret Rosenfeld
OBJECTIVE: Pulmonary alveolar proteinosis is a rare condition that can cause life-threatening respiratory failure attributable to excessive alveolar accumulation of surfactant proteins. The standard treatment for removing these secretions is through therapeutic bilateral lung lavage. Descriptions of procedures for performing therapeutic bilateral lung lavage and methods used to evaluate the overall effectiveness of this invasive procedure in children with pulmonary alveolar proteinosis have not been adequately described in the medical literature...
May 2010: Pediatric Critical Care Medicine
F G Salerno, N Shinozuka, J J Fredberg, M S Ludwig
When isolated constricted airway smooth muscle is oscillated, muscle tone decreases. We investigated whether changing tidal volume (VT) would affect induced bronchoconstriction in an in vivo canine model. Open-chest dogs were intubated with a double-lumen endotracheal tube, which isolated each main bronchus, and mechanically ventilated with a dual-cylinder ventilator. Bronchial pressure (Pbr) and flow were measured separately in each lung. Resistance and elastance were calculated by fitting the changes in Pbr, flow, and volume to the equation of motion...
November 1999: Journal of Applied Physiology
A Valls-i-Soler, B Fernández-Ruanova, J López-Heredia y Goya, L Román Etxebarría, J Rodriguez-Soriano, V Carretero
AIM: To determine if 1-minute instillation of Curosurf via a dual-lumen endotracheal tube without interruption of mechanical ventilation could decrease the incidence of hypoxia (drop in oxygen saturation [SaO2] to <80%, or of transcutaneous partial pressure of oxygen [PtcO2] to <50 mm Hg [6.6 kPa]) and bradycardia (heart rate below 80 beats/minute) at dosing, without affecting the efficacy of the standard bolus delivery. DESIGN: Prospective, multicenter, randomized, nonblinded clinical trial...
April 1998: Pediatrics
A A Pellett, J M Cairo, M G Levitzky
Hypoxemia interferes with hypoxic pulmonary vasoconstriction (HPV). We investigated the respective roles of the autonomic nervous system and the mixed venous PO2 (PVO2) in the attenuation of HPV by hypoxemia. Pentobarbital-anesthetized dogs had their lungs separately ventilated with a dual-lumen endotracheal tube. Left (Ql) and total (Qt) pulmonary blood flows were determined using electromagnetic flow probes. HPV was initiated by ventilating the left lung with nitrogen for 5-10 min while the right lung received 100% oxygen...
September 1997: Respiration Physiology
R D Hubmayr, G A Farkas, H Y Tao, G C Sieck, S S Margulies
We studied dogs with unilateral papain-induced emphysema to answer two questions: (1) Do emphysema lung-apposed hemidiaphragm (DiE) and normal lung-apposed hemidiaphragm (DiN) have equal capacities for lowering lung surface pressure? and (2) Are side-to-side differences in intrathoracic pressure the result of unequal force outputs by DiE and DiN or are they caused by differences in their mechanical efficiency as pressure generators? After the airways of the emphysematous and normal lungs were intubated with a dual lumen endotracheal tube, both phrenic nerves were maximally stimulated at rates between 1 and 50 Hz and the changes in airway occlusion pressure (delta PaoE,N) and diaphragm length (sonomicrometry) were recorded...
April 1993: Journal of Clinical Investigation
S M Hall, M Chapleau, J Cairo, M G Levitzky
High-frequency positive-pressure ventilation (HFPPV) was compared to intermittent positive-pressure ventilation (IPPV) during unilateral atelectasis with and without halothane anesthesia. Dogs with electromagnetic flow probes chronically implanted on their main (Qt) and left (Ql) pulmonary arteries were ventilated via Carlen's dual-lumen endotracheal tubes. In eight closed-chest dogs, about 43% of the cardiac output perfused the left lung during bilateral ventilation by either a Harvard animal respirator (IPPV) or a Health-dyne model 300 high-frequency ventilator (HFPPV)...
August 1985: Critical Care Medicine
C Schmidt, R Schön, J Russ
The effectiveness of tracheobronchial lavage in the traditional manner with application of a rinsing solution into the endotracheal tube of artificially ventilated patients is unsatisfactory. In order to improve this a new double lumen catheter was developed. Beside the suction channel with a normal diameter is another very small channel, through which a rinsing solution or drugs can easily be applied endobronchially. The rinsing solution can be poured with high speed through this small channel into the peripheral bronchi...
June 1988: Der Anaesthesist
P C Corcoran, Y Wang, N M Katz, S S Rajan, A R Analouei, M L Foegh, R B Wallace
Optimal techniques for lung preservation are yet to be defined. Platelet activating factor is a phospholipid released by a variety of cells and produces pulmonary abnormalities similar to posttransplantation pulmonary dysfunction. We investigated the strength of the effect of the platelet activating factor antagonist BN 52021 as compared with that of deferoxamine, an iron chelator previously shown to improve lung preservation. Differential lung function and pulmonary hemodynamics were used to assess preservation after a 6-hour period of cold ischemic storage in a modified canine model of left lung allotransplantation...
July 1992: Journal of Thoracic and Cardiovascular Surgery
M G Levitzky
Dogs with electromagnetic flow probes implanted on their left (QL) and main (QT) pulmonary arteries, catheters in their left atria and external jugular veins, and chronic tracheostomies were trained to accept Carlens dual-lumen endotracheal tubes into their tracheostomies, thus allowing separate ventilation of the two lungs. Swan-Ganz catheters were inserted through the jugular vein catheters. Pneumotachographs measured air flow to each lung. During bilateral ventilation with room air or O2, QL was about 36% of QT...
July 1979: Respiration Physiology
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