Simple Catheter Research Articles

A catheter technique for the production of communicating hydrocephalus.

The authors describe a simple catheter technique for the production of communicating hydrocephalus by altering cerebrospinal fluid absorption in the parasagittal region. This method should prove to be of value in understanding the alterations of CSF absorption in communicating hydrocephalus.

Percutaneous transfemoral right heart catheterization: The pulmonary wedge catheter

A simple catheter design is presented which allows obtaining the wedge position in the pulmonary lung field with a catheter passed from the femoral route. The catheter is made from very flexible polyethylene tubing in which a reverse curve is positioned 2.5 cm from its single, end hole tip. This catheter deserves trial by those physicians desiring to perform total right heart catheterization from the femoral route.

SIMPLE CONTINUOUS BLOOD-SAMPLING DOUBLE-LUMEN CATHETER

SIMPLE CONTINUOUS BLOOD-SAMPLING DOUBLE-LUMEN CATHETER

The Aortic Loop Technique for Femorocerebral Angiography

Abstract The aortic loop technique for catheterizing tortuous neck vessels via a femoral approach is described. It has proved to be as successful as employing a variety of specific preshaped catheters and is easier to use, since it requires only a simple S-shaped catheter and a movable-core guide wire.

A SIMPLE CATHETER FOR CONTINUOUS INTRAVASCULAR SAMPLING

A SIMPLE CATHETER FOR CONTINUOUS INTRAVASCULAR SAMPLING

A simple catheter for intermittent intravenous anaesthesia in animal surgery.

RECENT allograft experiments on rabbits in our laboratories prompted the development of a simple and safe anaesthetic technique which could be administered by the surgeon to two animals simultaneously. Inhalation techniques require the almost constant attention of another assistant; parenteral barbiturate administration requires repeated and increasingly difficult intravenous injections for maintenance. The following intravenous catheter and continuous technique were therefore devised, based on the standard technique of pentothal induction of anaesthesia in human surgery.

EPIDURAL CAUDAL ANESTHESIA IN PROSTATIC SURGERY

In the choice of an anesthetic in prostatic cases there are several factors of importance to be considered. The first of these is the kidneys. A large proportion of all cases of prostatic hypertrophy are associated with so much back pressure that definite impairment of the kidney function is present. Fortunately, under drainage, generally with a simple urethral catheter, the function rapidly improves and the operation under almost any general anesthetic is fairly free from danger; but there are many cases in which, with the best preoperative care, the kidney is far from normal when operation must be carried out. In such cases ether anesthesia is considered dangerous, nitrous oxide less so, and perhaps ethylene the least of general anesthetics, but in all such cases it would be preferable to operate under some other anesthesia than general. Cardiovascular conditions also occur in a very large percentage of cases. In our

The gastric and pancreatic secretions of the newborn

I have been able by means of a simple duodenal catheter to obtain for the first time access to the duodenum in the living infant. This has enabled me to investigate the secretion of the upper part of the small intestine. This catheter is, in brief, merely a Nelaton soft rubber catheter No. 14 (F). That I actually do reach the intestine is proved by X ray photographs which I show.The present report concerns solely newborn infants, which had never obtained any nourishment. I have found some interesting conditions not only as concerns intestinal secretions but also regarding the secretion of the gastric juice. It is noteworthy that there have been no previous investigations in this regard; in fact I have been able to find note of only one test of the gastric secretion of the newborn before it has been given food.I found that in almost all cases hydrochloric acid is present in the stomach of these newborn infants whether they are examined one half hour or twenty hours after birth. The hydrochloric acid varies...