The role of hypovolemic stress in the production of fat embolism in rabbits. 1. Morphologic alterations of the lungs.

Abstract:

:In rabbits, an experimental model of fat embolism was produced that simulates the course of events in the clinical situation. Small doses of fat-cell suspension (0.075 ml/kg of body weight), prepared by collagenase treatment of homologous adipose tissue, were injected intravenously. Concomitantly, hypovolemia was produced in two animal groups by either withdrawing 20 percent of the estimated blood volume or by application of a hind-limb ischemic tourniquet for 90 minutes. The presence of pathoanatomic characteristics typical of fat embolism was evaluated by recording lung/body weights, macroscopic appearance, and semiquantitative microscopic estimation in the lungs of edema, hemorrhage, atelectasis, intravascular coagulation, and leukocytic thrombi. Mean indices of lung/body weight were higher in all animals receiving injections of fat-cell suspension, as compared to controls. The score for microscopic generalized pulmonary damage was significantly higher in rabbits exposed to both fat-cell injections and hypovolemia than in controls or after fat-cell injections alone. It is concluded that hypovolemia enhances the development of fat embolism in rabbits subjected to small doses of fat-cell suspension.

journal_name

Chest

journal_title

Chest

authors

Cotev S,Rosenmann E,Eyal Z,Weinberg H,Shafrir E,Davidson JT

doi

10.1378/chest.69.4.523

subject

Has Abstract

pub_date

1976-04-01 00:00:00

pages

523-8

issue

4

eissn

0012-3692

issn

1931-3543

pii

S0012-3692(16)52913-4

journal_volume

69

pub_type

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