Abstract:
:Recent reports suggest that endorphins may contribute to hemodynamic depression in septic and hemorrhagic shock. There is also evidence that reversal of endorphin effects with high dose naloxone may improve hemodynamic function and improve survival in shock states. The purpose of this study was to examine the effects of naloxone on hemodynamic parameters in anaphylactic shock. Anaphylactic shock was induced in sensitized rabbits with horse serum. Three minutes after serum challenge, rabbits were treated with a 3 mg/kg bolus of naloxone followed by a 3 mg/kg per h infusion (group I, n = 8), or by injection with an equal volume of saline (group II, n = 8). Cardiac output, blood pressure, heart rate and body temperature were monitored continuously for 60 min and the experiment was terminated. There was a significant increase in cardiac index in group I animals at 10 min (P less than 0.01) and 15 min (P less than 0.01). Stroke volume index was also higher in naloxone treated animals at 10 min and 15 min (P less than 0.05). Although mean blood pressure was higher in group I animals at all time intervals after naloxone was begun, the difference was statistically significant only at 60 min (P less than 0.05). Peripheral vascular resistance index was not significantly different for the two groups.
journal_name
Resuscitationjournal_title
Resuscitationauthors
Barsan WG,Hedges JR,Syverud SAdoi
10.1016/0300-9572(86)90076-6subject
Has Abstractpub_date
1986-07-01 00:00:00pages
223-31issue
4eissn
0300-9572issn
1873-1570pii
0300-9572(86)90076-6journal_volume
13pub_type
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