Arterial to end-tidal CO2 gradient reversal during laparoscopic pheochromocytoma resection

Unexpected Increase in Arterial to End-Tidal CO2 Gradient in a Child Undergoing Embolization of MAPCAs

A 17-month-old infant with multiple aorto-pulmonary collateral arteries (MAPCAs) and pulmonary hypertension presented for diagnostic catheterization. On the day of the procedure, the infant was asymptomatic with oxygen saturation in the 90’s on 1.0 L/min O2 nasal cannula. His parents denied any recent illness. During the procedure, one coil was inadvertently embolized into the right lung result...

End tidal-to-arterial CO2 and O2 gas gradients at low- and high-altitude during dynamic end-tidal forcing.

We sought to characterize and quantify the performance of a portable dynamic end-tidal forcing (DEF) system in controlling the partial pressure of arterial CO2 (Pa(CO2)) and O2 (Pa(O2)) at low (LA; 344 m) and high altitude (HA; 5,050 m) during an isooxic CO2 test and an isocapnic O2 test, which is commonly used to measure ventilatory and vascular reactivity in humans (n = 9). The isooxic CO2 te...

End-tidal CO2 monitoring during anesthesia.

Laparoscopic resection of ectopic pheochromocytoma.

Ectopic pheochromocytoma (EP) is considered as pheochromocytoma located at extra-adrenal site. Surgical removal is believed to be the best choice for treatment of pheochromocytoma. We present a series EP resected by laparoscopic approach (LEP) and confirm its feasibility. We retrospectively reviewed clinical data of 4 patients underwent laparoscopic resection of LEP (periaortocaval EP, n = 1; r...

Arterial to end-tidal carbon dioxide differences during neurosurgical procedures.

experimental investigation performed in dogs in vivo has found no beneficial effect with paneuronium on pulmonary resistance, 6 contrary to what was expected by Kuwahara and Goresky from pancuronium sympathomimetic properties. Moreover, low doses of pancuronium increased pulmonary resistance (likely by blocking prejunctional M2-muscarinic receptors) whereas vecuronium was devoid of this side ef...