Comparison of Two Lung Ultrasound Protocols for Identification and Distribution of B-, I-, and Z-Lines in Clinically Healthy Cats

IF 1.2 3区农林科学 Q3 VETERINARY SCIENCES

Journal of veterinary emergency and critical care Pub Date : 2025-08-30 DOI:10.1111/vec.70011

Hugo K. J. Swanstein, Rebecca Langhorn, Kris Gommeren, Søren Boysen

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引用次数: 0

Abstract

Objective

To investigate the frequency and distribution of B-, I-, and Z-lines in clinically healthy cats and to determine whether there is a difference in frequency and distribution between two different lung ultrasound protocols.

Design

Prospective cross-sectional study from June to September 2022.

Setting

Companion animal referral hospital.

Animals

Sixty-four cats determined to be healthy based on history and physical examination.

Interventions

All cats had point-of-care lung ultrasound performed with frequency of B-, I-, and Z-lines recorded. Findings of a modified Calgary pleura and lung ultrasound (PLUS) protocol (19 sites recorded) and a veterinary Brief Lung Ultrasound Exam (VetBLUE) protocol (nine sites), both including the subxiphoid site, were compared.

Measurements and Main Results

B-lines were identified in 14%–27% of cats depending on the protocol used, with a median of <3 B-lines total per cat, <2 B-lines per hemithorax, and ≤2 positive B-line sites per hemithorax, regardless of the protocol used. The total number of B-, I-, or Z-lines identified was significantly higher for the modified Calgary PLUS compared with VetBLUE. The number of cats with ≥1 B- and I-lines was significantly higher with modified Calgary PLUS compared with VetBLUE, with 17 (26.6%) and 42 (65.6%) versus nine (14.1%) and 34 (53.1%) cats identified, respectively. Z-lines were identified in 62 (96.9%) cats regardless of the protocol used. Three (4.7%) cats had ≥1 B-line at the subxiphoid view.

Conclusions

B-lines were detected in <30%, I-lines in >50%, and Z-lines in >95% of clinically healthy cats regardless of protocol used. B-lines were rarely detected at the subxiphoid view. A significant difference between protocols was found when comparing the percentage of cats with B- and I-lines.

Abstract Image

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临床健康猫B-、I-和z -线识别和分布的两种肺超声方案的比较

目的：研究临床健康猫B-、I-和z -线的频率和分布，确定两种不同肺部超声检查方案的频率和分布是否存在差异。设计：2022年6月至9月的前瞻性横断面研究。单位：伴侣动物转诊医院。动物：64只猫根据病史和体格检查确定为健康。干预措施：所有猫都进行了B线、I线和z线频率的即时肺部超声检查。比较改良的卡尔加里胸膜和肺超声（PLUS）方案（记录了19个部位）和兽医简短肺超声检查（VetBLUE）方案（9个部位）的结果，包括剑突下部位。测量结果和主要结果：根据使用的方案，在14%-27%的猫中检测到b系，中位数为：结论：无论使用何种方案，在50%的临床健康猫中检测到b系，在95%的临床健康猫中检测到z系。剑突下位极少见b线。当比较B系和i系猫的百分比时，发现两种方案之间存在显著差异。

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来源期刊

Journal of veterinary emergency and critical care 农林科学-兽医学

CiteScore

2.50

自引率

15.40%

发文量

121

审稿时长

18-36 weeks

期刊介绍： The Journal of Veterinary Emergency and Critical Care’s primary aim is to advance the international clinical standard of care for emergency/critical care patients of all species. The journal’s content is relevant to specialist and non-specialist veterinarians practicing emergency/critical care medicine. The journal achieves it aims by publishing descriptions of unique presentation or management; retrospective and prospective evaluations of prognosis, novel diagnosis, or therapy; translational basic science studies with clinical relevance; in depth reviews of pertinent topics; topical news and letters; and regular themed issues. The journal is the official publication of the Veterinary Emergency and Critical Care Society, the American College of Veterinary Emergency and Critical Care, the European Veterinary Emergency and Critical Care Society, and the European College of Veterinary Emergency and Critical Care. It is a bimonthly publication with international impact and adheres to currently accepted ethical standards.