Graduate Thesis Or Dissertation
 

Effect of Audible Static on Blood Pressure Measurement by Doppler Ultrasound Sphygmomanometry in Cats

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/1j92gg71m

Descriptions

Attribute NameValues
Creator
Abstract
  • Systemic hypertension, a persistent elevation in systemic arterial blood pressure (BP), is a well-recognized disorder in cats. Failing to diagnose it accurately could lead to organ damage or unnecessary lifelong therapy. Doppler ultrasonic flow detectors are commonly used for indirect BP measurements in cats. However, whether the audible static from these devices falsely increases BP readings in cats due to causing stress or fear remains unclear. The use of headphones is recommended during BP measurement to potentially reduce stress in cats by minimizing noise and enhancing the clarity of pulse signals for better detection by operators. However, the specific benefits of this practice have not been evaluated in cats. Additionally, current guidelines recommend a series of BP readings while excluding the initial measurement for accurate BP measurement. However, ambiguity persists regarding the comparability between the initial BP reading and the subsequent average of readings. To evaluate this, we conducted a randomized crossover study. Our study enrolled 32 healthy client-owned cats over a year old. BP measurements were taken twice, 14 days apart, with and without a veterinarian wearing headphones to eliminate audible static to the cat. Physiologic parameters including heart rate (HR), respiratory rate (RR), body temperature, Fear Anxiety and Stress (FAS) score were recorded after the BP measurements. Additionally, the time taken to measure BP was documented. A linear mixed-effects model was used to compare the impact of wearing headphones on BP measurement. Pearson’s weighted correlation analysis was used to assess the relationship between BP with HR, RR and FAS score. To compare FAS scores, body temperature, HR, RR, and the initial BP reading (BP 1) and the average of subsequent readings (BP 2-6) with and without headphones, paired t-test or Wilcoxon matched paired signed rank tests were used. 47% of cats showed an average BP measurement at least 10 mmHg higher when headphones were not used, with the majority (73%) being young adult cats. There was no difference in BP measurements with or without headphones. However, the use of headphones led to lower BP readings, especially in young adult cats. There was no difference in the time taken for BP measurement, whether headphones were used or not. However, BP measurement without headphones took approximately half a minute longer for all cats including both young adult and mature adult/senior cat age groups. There was no difference between the initial BP reading (BP 1) and the average of subsequent readings (BP 2-6). Our study suggests that using headphones during BP measurement with Doppler sphygmomanometry might mitigate situational hypertension, particularly in young adult cats. These findings highlight the importance of consistent use of headphones when comparing serial BP measurements in cats. Moreover, current guidelines might benefit from re-evaluation regarding the potential inclusion of the initial BP reading.
License
Resource Type
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Conference Name
Conference Section/Track
Conference Location
  • Austin, Texas, USA
Academic Affiliation
Rights Statement
Publisher
Peer Reviewed
Language

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details UematsuSayaka2024.pdf 2023-12-26 Public Download