Ultrasonographic Assessment of Caudal Vena Cava to Aorta Ratio as a Novel Endpoint in Hemorrhagic Shock Resuscitation in Dogs
<strong>Objective-</strong> The aim of this study was to assess ultrasonography-derived caudal vena cava to aorta ratio (CVC/Ao) as a novel endpoint in the resuscitation of experimental hemorrhagic shock in dogs.<br /> <strong>Design-</strong> Experimental study.<br...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Iranian Veterinary Surgery Association (IVSA)
2019-10-01
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| Series: | Iranian Journal of Veterinary Surgery |
| Subjects: | |
| Online Access: | http://www.ivsajournals.com/article_92138_bb564107f1174e40bda93ea50e3aa03a.pdf |
| Summary: | <strong>Objective-</strong> The aim of this study was to assess ultrasonography-derived caudal vena cava to aorta ratio (CVC/Ao) as a novel endpoint in the resuscitation of experimental hemorrhagic shock in dogs.<br /> <strong>Design-</strong> Experimental study.<br /> <strong>Animals-</strong> Ten adult mongrel healthy dogs.<br /> <strong>Procedures-</strong> After induction of anesthesia (control assessments), hemorrhagic shock was induced by blood withdrawal to a mean arterial pressure of 40 to 50 mmHg within 30 minutes and then maintained in a hypovolemic situation for an additional 30 minutes (second and third stages of assessments). Afterward, the dogs were randomly assigned to two groups which received 20 ml/kg lactated Ringer's solution or 5 ml/kg Hydroxyethyl starch, in four consecutive 15 minutes intervals (fourth stage of assessments). One hour after the last resuscitation step, final ultrasonographic assessments were performed.<br /> <strong>Results-</strong> Hemorrhagic shock caused a significant decrease in the CVC and Ao diameters as well as the CVC/Ao (2.14 ± 0.28 cm, 0.85 ± 0.07 cm and 0.4 ± 0.06, respectively) (p<0.05). Following the fluid resuscitation, CVC/Ao increased and returned to pre-shock values in both groups.<br /> <strong>Conclusion and clinical relevance-</strong> Findings indicated that serial ultrasonographic assessment of the CVC/Ao can be a useful endpoint in the resuscitation of dogs with hemorrhagic shock. |
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| ISSN: | 2008-3033 2008-3033 |