BACKGROUND Left-lateral tilt position is used to reduce assumed aortocaval compression by the pregnant uterus. METHODS Magnetic resonance images of 10 singleton parturients at full term and 10 healthy nonpregnant women were obtained for measurement of the abdominal aorta and inferior vena cava volume between the L1-L2 disk and L3-L4 disk levels in both the supine and left-lateral tilt positio...

To determine the effect of change in body position on gas exchange after thoracotomy, 12 patients with potentially resectable lung tumours were studied before and 24 hours after operation. Measurements of arterial blood gas tension (PaO2, PaCO2), alveolar-arterial oxygen difference (A--adO2), venous admixture effect (Qs/Qt percent), and physiological dead space to tidal volume ratio (Vd/Vt), we...

The patient is placed in a right lateral and rotated decubitus, with the abdomen rotated at 45 (Fig. 1a). The abdominal slope obtained with the maximal right rotation of the operating table (ALM, OrleÂans, France) reaches 65 . The video monitor is viewed distally on the left side of the patient. The surgeon is facing the patient's abdomen (Fig. 1b). The 0 endoscope (Storz-France SA, Paris, Fran...

IN SURGICAL PROCEDURES necessitating one-sided thoracotomy in the lateral position it is becoming evident that, despite the use of end,tracheal and double lumen tubes, the amount of alveolar arterial (a-A) oxygen difference is very high and the Pao~ of many patients may become dangerously low?,-" Investigations were carried out on a practical level to try to find the cause for this and to devis...

An 18-year-old male with huge anterior mediastinum mass was scheduled for thoracotomic incisional biopsy under general anesthesia after failed fluoroscopy-guided percutaneous needle biopsy. Under propofol and succinylcholine anesthesia, intubation was successfully achieved using a Univent tube. However, when we changed the patient's position from supine to right lateral decubitus, oxygen satura...

Canine transmigration is a very rare dental anomaly in which an unerupted mandibular canine migrates, crossing the mandibular midline. This unusual condition is most often diagnosed by chance during a routine X-ray examination. The most common clinical signs announcing the presence of this anomaly are over-retention of the deciduous canine and the absence of permanent canine from the dental arc...

The purpose of this study was to determine and compare the Vertebral Heart Size (VHS) Cardio-Thoracic Rate (CTR) in normal Wistar Rats. size organs chest cavity heart can be measured by taking thorax radiographs. Thorax radiographs 85 male rats were taken under anesthesia, VHS CTR calculated digital environment. mean 7.22 mm right lateral position 7.34 left position. In radiography ventrodorsal...

BACKGROUND Platypnea-orthodeoxia syndrome is a rare syndrome characterized by dyspnea and hypoxia when the patient is sitting or standing. Here we report a case of platypnea-orthodeoxia syndrome caused by a right hemidiaphragmatic elevation with giant liver cyst that triggered a right-to-left shunt through the patent foramen ovale. This case report is the first presentation of a case secondary ...