Validity and reliability of Doppler ultrasonography and direct arterial blood pressure measurements in anaesthetized dogs weighing less than 5 kg
Autor: | Anna Andaluz, Rosa Isabel Ferrer, Xavier Moll, Félix García, Adrià Aguilar |
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Rok vydání: | 2018 |
Předmět: |
Male
Mean arterial pressure 040301 veterinary sciences Validity Every 5 minutes 0403 veterinary science 03 medical and health sciences symbols.namesake Dogs 0302 clinical medicine 030202 anesthesiology Animals Medicine Anesthesia General Veterinary business.industry Body Weight Limits of agreement Reproducibility of Results Blood Pressure Determination Ultrasonography Doppler 04 agricultural and veterinary sciences Blood pressure Continuous noninvasive arterial pressure symbols Female Ultrasonography business Doppler effect |
Zdroj: | Veterinary Anaesthesia and Analgesia. 45:135-144 |
ISSN: | 1467-2987 |
Popis: | To assess the validity and reliability of Doppler ultrasonography (DOP) as compared with invasive arterial blood pressure measurements in anaesthetized dogs weighing less than 5 kg.Controlled, prospective, clinical study.A total of 41 privately owned dogs weighing less than 5 kg.The dogs were anaesthetized, and an intra-arterial catheter was placed aseptically in the dorsal pedal artery of the pelvic limb to perform invasive blood pressure (IBP) measurement. The contralateral metatarsal surface of the foot was clipped in order to perform DOP. Both techniques were used to record blood pressure measurements every 5 minutes during surgical procedures. The blood pressure measurements were categorized into two groups: hypotensive [mean arterial pressure (MAP)60 mmHg] and normotensive (MAP between 60 and 120 mmHg). A linear mixed model was used to compare the DOP and IBP values. The results were evaluated according to the requirements of the American College of Veterinary Internal Medicine (ACVIM) guidelines for the validation of devices.DOP provided higher values compared to the systolic arterial blood pressure (SAP) and MAP of IBP measurements. The closest agreement between the two techniques was found for SAP; the bias was 8.8, and limits of agreement (LOA) were -32.9 and 50.4. Similar results were observed when the IBP technique was categorized. The closest agreement was for SAP in animals categorized as normotensive; the bias was 8.2, and LOAs were -32.8 and 49.2. The level of agreement between DOP and IBP did not meet the ACVIM recommendations.Our results suggest there is poor agreement between DOP and IBP measurements in anaesthetized dogs weighing less than 5 kg. Hence, the use of DOP in these animals could be misleading. |
Databáze: | OpenAIRE |
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