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J Vet Emerg Crit Care (San Antonio). 2017 Sep;27(5):499-505. doi: 10.1111/vec.12637. Epub 2017 Aug 1.

Frequency and number of B-lines using a regionally based lung ultrasound examination in cats with radiographically normal lungs compared to cats with left-sided congestive heart failure.

Author information

1
Hill Country Veterinary Specialists, Spicewood, TX.
2
Veterinary Emergency and Specialty Center, Richmond, VA.
3
Department of Research and Innovative Support, University of Pretoria, Gauteng, South Africa.
4
Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO.

Abstract

OBJECTIVE:

To establish a baseline lung ultrasound (LUS) artifact profile using a regionally based protocol in cats without clinical signs of respiratory disease and with radiographically normal lungs compared to a cohort of cats with left-sided congestive heart failure (CHF).

DESIGN:

Prospective case series.

ANIMALS:

Forty-nine cats without clinical signs of respiratory disease and with radiographically normal lungs and 7 cats with radiographic evidence of left-sided CHF.

INTERVENTIONS:

Application of a previously published LUS protocol. Frequency of B-lines was compared based on signalment, body condition score, investigator, and reasons for radiography and between 49 cats with radiographically normal lungs to 7 cats with radiographic evidence of left-sided CHF.

RESULTS:

Overall frequency of B-lines was 12% (95% confidence interval, 5-24%) in cats without respiratory disease versus 100% (95% confidence interval, 65-100%) in those with left-sided CHF. Six cats (6/49) had B-lines with 5/6 having B-lines at a single site; and 4/5 having a single B-line at 1 site, 1/5 having 2 B-lines at 1 site; and the sixth cat having 2 positive sites with a single B-line at each. In the cohort of cats with left-sided CHF, all cats (7/7) had >3 B-lines detected at every site.

CONCLUSIONS:

The lack of B-lines in cats without respiratory disease (with radiographically normal lungs) and the predominance of B-lines in cats with left-sided CHF suggest that a regionally based LUS protocol may be clinically useful for the identification and evaluation of feline respiratory conditions.

KEYWORDS:

CHF; TFAST; feline; pulmonary disease; ultrasonography

PMID:
28763158
DOI:
10.1111/vec.12637
[Indexed for MEDLINE]

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