Titre
In situ control of cardiotomy suction reduces blood trauma
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Tevaearai, H. T.
Auteure/Auteur
Mueller, X. M.
Auteure/Auteur
Horisberger, J.
Auteure/Auteur
Augstburger, M.
Auteure/Auteur
Bock, H.
Auteure/Auteur
Knorr, A.
Auteure/Auteur
von Segesser, L. K.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1058-2916
Statut éditorial
Publié
Date de publication
1998-10
Volume
44
Numéro
5
Première page
M380
Dernière page/numéro d’article
3
Peer-reviewed
Oui
Notes
Comparative Study
Journal Article --- Old month value: Sep-Oct
Journal Article --- Old month value: Sep-Oct
Résumé
Cardiotomy suction is known for its deleterious effects on formed and unformed blood elements. The authors investigated an "intelligent" remote controlled automatic suction system. A suction cannula with an optic sensor at its tip was connected to a special closed cardiotomy reservoir. Contact with blood immediately generated a reservoir vacuum from 0 to -100 mmHg, permitting aspiration until the blood was no longer detected (automatic shut off). Blood trauma was evaluated in a bovine model, comparing the automatic suction system vs standard continuous aspiration (control) adjusted to -100 mmHg. After full systemic heparinization, five calves (weight, 62.5 +/- 4.4 kg) for the automatic suction system group, and four (weight, 62.8 +/- 5.1 kg) for the control group, were equipped with a jugular cannula connected via a roller pump to the cardiotomy reservoir. Through a small thoracotomy, a standardized hole was created in the right atrium, allowing for a blood loss of approximately 400 ml/min. The suction cannula was placed into the chest cavity in a fixed position. Blood samples were drawn at regular intervals for cell count and chemistry. Lactate dehydrogenase values, for the automatic suction system and the control groups, respectively, expressed as percent of baseline value, were 88 +/- 14 vs 116 +/- 22 after 1 hr; 94 +/- 16 vs 123 +/- 23 after 2 hr; and 97 +/- 19 vs 140 +/- 48 after 3 hr (p < 0.05). Values for free hemoglobin in plasma (percent of baseline value), for the automatic suction system and the control groups, respectively, were 102 +/- 18 vs 200 +/- 69 after 1 hr; 98 +/- 29 vs 163 +/- 37 after 2 hr; and 94 +/- 37 vs 179 +/- 42 after 3 hr (p < 0.05). Compared with a standard continuous aspiration system, in situ regulation of suction significantly reduces blood trauma.
Sujets
PID Serval
serval:BIB_DDCF43138C26
PMID
Date de création
2008-02-14T13:18:30.348Z
Date de création dans IRIS
2025-05-21T06:06:47Z