To the Editor:—I read the letter by Dr. Stone with keen interest. I have three concerns about the technique the author describes. First, the author defines two attempts as a criterion for labeling difficult venous access, which may not be true. This is subjective, because the procedure may be performed by junior staff or there may be a bias effect because the operator knows that if two attempts...

RI~SUMt~ Par une mdthode applicable ~t un tr~s grand nombre de milieu anisotropique, l'auteur utilise les in6galit6s concern~nt la d~croissance de l'6nergie darts le cas d'un probl~me plan et dans l'hypoth6se de conditions 61astostatiques lin~ahes, l'auteur pr6cise la validit6 du principe de Saint-Venant dans le cadre de ses applications. Une limite in fdrieure (en fonction des constantes 61ast...

This article comprised the data related to the research article entitled "Feasibility and usefulness of three-dimensional optical coherence tomography guidance for optimal side branch treatment in coronary bifurcation stenting" (Nagoshi et al., In press) [1]. In this article we reports details about two patterns of guide wire (GW) recrossing position after crossover stenting in bifurcation lesi...

Direct percutaneous endoscopic jejunostomy (DPEJ) is an infrequent procedure as it is not always easy to obtain transillumination, being this the main reason for failure of this technique. In patients with previous surgery, this procedure is more complex and there are only 6 reported cases in pediatric population. In our case, we provide the use of an endoscopic triangulation system with "T" pe...

ECKSTEIN, RICHARD Mr., HOWARD E. ROWEN, JR., AND KATSURO SHIMOMURA. Technique for placement of catheters in the common left coronary artery. J. Appl. Physiol. 25(5): 636-637. 1968.-The construction of a device and its use for placement of catheters in the common left coronary artery and the origin of its major branches are described. Essentially, the technique consists of the introduction of a ...

A new catheter for peritoneal dialysis in neonates and infants was used on 28 occasions in 17 patients. Advantages over other catheters included easy safe introduction over a guide wire, absence of early leakage of dialysate, and the ability to change the catheter without creating a second abdominal wound.

The authors report the embolization of an unruptured nondissecting vertebral fusiform aneurysm using a new silicone detachable balloon that they have developed, which is advanced without inflation over a guide wire.

Endobronchial balloon tamponade is an alternative method that can be used to control massive hemoptysis. Several different techniques have been used for this purpose. We describe a new parallel method, in which biopsy forceps introduced through a bronchoscope channel is used to grasp a balloon catheter. As the bronchoscope is advanced to the bleeding site, the balloon catheter is pulled into po...

PURPOSE To investigate the efficacy of a second-generation prototype magnetic guidance system in complex vessel phantoms versus conventional navigation in simulated interventional radiology procedures and to analyze procedure and fluoroscopy times. MATERIALS AND METHODS The magnetic guidance system consists of two focused-field permanent magnets on each side of the body that create a 0.1-T na...

OBJECTIVE To analyze the natural exit of the wire guides in major trochanter through retrograde femoral approach, in cadaver specimens. MATERIAL AND METHOD 100 femurs had been perforated between the femoral condyles, at 1.2 cm of the intercondylar region. A 3-mm straight wire guide was introduced, through retrograde approach, until the proximal extremity of femur was reached. Femurs were asse...