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Canadian Journal of Anaesthesia

, Volume 49, Issue 7, pp 718–723 | Cite as

Alfentanil does not increase resistance of the respiratory system in ASA I patients ventilated mechanically during general anesthesia

  • Giorgio Conti
  • Germano De Cosmo
  • Maria Grazia Bocci
  • Massimo Antonelli
  • Giorgia Ferro
  • Roberta Costa
  • Geremia Zito
  • Rodolfo Proietti
Cardiothoracic Anesthesia, Respiration and Airway

Abstract

Purpose

Several experimental and clinical studies have demonstrated a direct bronchoconstrictor effect of opioids on smooth bronchial musculature followingiv administration. The aim of this study was to evaluate the effects of alfentanil on respiratory system mechanics in a group of ASA I patients ventilated mechanically during general anesthesia.

Clinical features

Twenty consecutive ASA I patients (ten men and ten women) scheduled for general surgery interventions were studied (mean age 45.4 ± 9.9 yr, mean weight 61.9 ± 6.7 kg). Exclusion criteria were a history of chronic obstructive pulmonary disease, asthma or other pulmonary disease, atopy, wheezes, smoking and age below 18 yr. Subjects were randomly divided in two groups: Group A, receiving alfentanil at a 15 μg·kg−1 dose and Group B receiving alfentanil at a 30 μg·kg−1 dose. Respiratory mechanic variables were acquired at baseline (T0) and after three, ten and 15 min (T1, T2 and T3, respectively). We compared the basal values to the values measured at each time interval; basal values, prior to drug administration, served as control for each patient. P values < 0.05 were considered statistically significant.

Results

We did not observe significant differences in respiratory mechanic variables after the administration of alfentanil, 15 and 30 μg·kg−1. More specifically, respiratory system compliance and the different subcomponents of respiratory system resistances (i.e., maximum, minimum and delta resistance of respiratory system) were within normal limits and did not vary after alfentanil administration.

Conclusion

No respiratory adverse effect was reported after alfentaniliv administration.

Keywords

Alfentanil Smooth Bronchial Musculature Respiratory System Compliance Cisatracurium Besilate Respiratory System Mechanic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

L’alfentanil n’augmente pas la résistance du système respiratoire chez des patients d’état physique ASA I ventilés mécaniquement pendant l’anesthésie générale

Résumé

Objectif

De nombreuses études expérimentales et cliniques ont démontré un effet bronchoconstricteur direct des opioïdes intraveineux sur la musculature lisse bronchique. Le but de notre étude était d’évaluer les effets de l’alfentanil sur la mécanique du système respiratoire chez un groupe de patients ASA I ventilés mécaniquement pendant une anesthésie générale.

Éléments cliniques

Vingt patients consécutifs ASA I ont été étudiés (dix hommes) pendant une intervention de chirurgie générale (âge moyen 45,4 ± 9,9 ans, poids moyen 61,9 ± 6,7 kg). Les critères d’exclusion étaient: un historique de bronchite chronique obstructive, asthme ou autres maladies pulmonaires, allergies, tabagisme, sibilances à l’auscultation pulmonaire et un âge inférieur à 18 ans. Les sujets ont été randomisés en deux groupes: Groupe A, recevant 15 μg·kg− 1 d’alfentanil et Groupe B recevant 30 μg·kg− 1 d’alfentanil. Les variables de la mécanique respiratoire ont été mesurés au départ (T0) et après trois, dix et 15 min (T1, T2 et T3, respectivement. Les données de base ont été comparées avec les données mesurées après chaque intervalle de temps, les valeurs de P < 0,05 ont été jugées statistiquement significatives.

Résultats

Aucune différence significative entre les variables de mécanique respiratoire n’a été observée après l’administration d’alfentanil, aussi bien après une dose de 15 que de 30 μg·kg− 1. En particulier, la compliance du système respiratoire et les différentes variables des composantes des résistances du système respiratoire (les résistances maximale, minimale et delta du système respiratoire) se situaient dans des limites normales et n’ont pas montré de variations significatives après alfentanil.

Conclusion

Aucun effet secondaire sur la mécanique respiratoire n’a été remarqué après l’administration iv d’alfentanil.

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Copyright information

© Canadian Anesthesiologists 2002

Authors and Affiliations

  • Giorgio Conti
    • 1
  • Germano De Cosmo
    • 1
  • Maria Grazia Bocci
    • 1
  • Massimo Antonelli
    • 1
  • Giorgia Ferro
    • 1
  • Roberta Costa
    • 1
  • Geremia Zito
    • 1
  • Rodolfo Proietti
    • 1
  1. 1.Department of AnesthesiaUniversity of Cattolica del Sacro Cuore di Roma, Policlinico Universitario “A. Gemelli”RomeItaly

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