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C Hervás

Publications and source records attributed to C Hervás.

10 recordsLinked to original sources
PubMed1997

[On the 150th anniversary of the introduction of anesthesia in Spain: the role of dentists].

We first discuss the circumstances that were influential in the role played by dentists during the early stages of anesthesia. We then study the positions of several Spanish dentists on the new technique for eliminating pain. Two opposing groups are found: on the one hand physician-dentists were cautions and prudent, and on the other, professionals with lesser qualifications such as surgeon-dentists, healers and bloodletters were clearly and boldly in favor of the new technique.

Anesthesia↗
PubMed1995

Multicomponent kinetic determinations using artificial neural networks.

Neural networks were successfully used for multicomponent kinetic determinations of species with rate constant ratios approaching unity without the aid of spectral discrimination. The ensuing method relies on two inputs describing the profile of the kinetic curve for each mixture, which is obtained by preprocessing kinetic data using nonlinear least-squares regression. A straightforward network architecture (2:4s:21) was used to resolve mixtures of 2- and 3-chlorophenol; the trained network estimated the concentrations of both components in the mixture with a relative standard error of prediction of approximately 5%, which is much lower than that obtained with Kalman filtering. The effect of some variables such as the rate constant and analyte concentration ratios on the proposed multicomponent determination is discussed.

Chlorophenols↗
PubMedDate not supplied

[Approach to the scientific work of Jaume Raventós (1905-1982)].

We analyze the scientific work done by Jaume Raventós (1905-1982) preceded by a brief biographic profile. The work of this Catalonian investigator has been separated into two stages: The first one, called the Barcelona period, is the training phase and comprises three moments: during the first one (1925-1927) the scientific participation of Raventós is still marginal; during the second period (1928-1933) he began to collaborate in large projects with A. Pi Sunyer and F. Doménech Alsina; and during the third period (1932-1934) he developed its own experimental line that culminated with his Doctoral Thesis. The second stage, called the British period, includes all work done during his exile at the United Kingdom. This phase can also be divided into three periods: the first one (1936-1939) took place in Edinburgh and was characterized by a continuation of the scientific line initiated in Barcelona; the second period developed in Manchester (1939-1954) and includes the studies with intravenous barbiturates; the third period (1956-1965) encompasses the last years of Raventós investigative activity which was devoted to the study of fluothane a new volatile anesthetic agent.

Anesthesiology↗
PubMedDate not supplied

[Changes in blood calcium during liver transplant in children].

We have evaluated the changes in plasma total and ionic calcium levels in twenty hepatic transplantations in pediatric patients. Direct intraoperative monitoring of ionic calcium is fundamental, because its variability is unrelated with total calcium levels; in addition, normal ionic calcium levels contribute to the hemodynamic stability of the patient. Although at the end of the operation total and ionic calcium levels were similar to the postinduction measurement, their values were dissociated in the perianhepatic period. In the anhepatic phase ionic calcium reached its lowest value (1.00 mmol/l) although total calcium increased above postinduction level from 2.13 to 2.46 mmol/l (p less than 0.05). In hepatic transplantation in pediatric patients calcium administration is indicated during the transfusion of citrated blood, being particularly necessary during the anhepatic phase to prevent ionic hypocalcemia.

Adolescent↗
PubMedDate not supplied

[Scientific communication in Spanish anesthesiology: medical congresses (1864-1936)].

This historical-medical study proposed to determine the evolution of knowledge in Spanish anesthesiology by examining conferences and presentations at medical congresses on record for the period between the first Spanish medical congress (1864) and the start of the Spanish Civil War (1936). We have found reports of 34 scientific meetings held during this period. All but two included news on anesthesiology or related matters. Ten were international meetings, while 25 were nation-wide conferences. We have been able to arrive at a good understanding of Spanish anesthesiology's evolution as a scientific discipline during this period.

Anesthesiology↗
PubMedDate not supplied

[A Spanish modification of the caudal block: S. Gil Vernet's exradural anesthesia (1917)].

This paper describes a technique for caudal epidural anesthesia proposed by S. Gil Vernet in order to achieve a high enough level of anesthesia for use in prostate surgery. The method, proposed in 1917, modified earlier work. The acceptance of the technique among other urological surgeons in Barcelona at the time is also analyzed.

Anesthesia, Caudal↗
PubMedDate not supplied

[More on amylene].

Explore the source record for details and available documents.

Anesthetics↗