Department of Medicine and Epidemiology, University of California-Davis, Davis, California, USA.
Department of Surgical and Radiological Sciences, University of California-Davis, Davis, California, USA.
J Vet Intern Med. 2023 May-Jun;37(3):1155-1165. doi: 10.1111/jvim.16699. Epub 2023 Apr 26.
Pyothorax, an accumulation of inflammatory fluid in the pleural space, is often caused by foreign body inhalation in dogs, whereas the etiology in cats can be more difficult to discern.
Compare clinical, microbiologic findings, and etiology in cats and dogs with pyothorax.
Twenty-nine cats and 60 dogs.
Medical records of cats and dogs diagnosed with pyothorax from 2010 to 2020 were reviewed. Clinical findings, fluid analysis, and microbiologic results were retrieved.
Antimicrobials had been administered to equal proportions of cats and dogs before fluid sampling (45% and 47%). Groups did not differ in age or total protein concentration or percentage neutrophils in pleural fluid, but effusion cell count was significantly higher in cats than in dogs (P = .01). Neutrophils containing intracellular bacteria were identified in more cats (27/29, 93%) than dogs (44/60, 73%; P = .05). Penetrating damage to the thorax was implicated as the cause of pyothorax in equal percentages of cats (76%) and dogs (75%). Etiology could not be determined in 2 cats and 1 dog. Cats had higher numbers of bacterial isolates per patient (median, 3) than dogs (median, 1; P = .01) and anaerobes were isolated more often in cats (23/29, 73%) than in dogs (27/60, 45%; P = .003).
Pyothorax had similar etiologies in cats and dogs. Cats had higher fluid cell counts, higher numbers of bacterial isolates identified per patient, and intracellular bacteria detected more commonly than did dogs.
胸腔积脓是指胸腔内积聚炎性液体，常因犬只吸入异物引起，而猫胸腔积脓的病因则更难确定。
比较猫和犬胸腔积脓的临床、微生物学发现和病因。
29 只猫和 60 只狗。
回顾 2010 年至 2020 年诊断为胸腔积脓的猫和犬的病历。检索临床发现、液体分析和微生物学结果。
在进行液体采样之前，猫和犬接受抗生素治疗的比例相同（分别为 45%和 47%）。两组在年龄或总蛋白浓度或胸腔积液中中性粒细胞百分比方面无差异，但猫的渗出液细胞计数明显高于犬（P = .01）。在更多的猫（27/29，93%）中发现含有细胞内细菌的中性粒细胞，而在犬（44/60，73%）中发现的比例较低（P = .05）。同样比例的猫（76%）和犬（75%）被认为是穿透性胸壁损伤导致胸腔积脓。2 只猫和 1 只犬的病因无法确定。猫的每位患者的细菌分离株数量（中位数 3）高于犬（中位数 1；P = .01），且猫中分离出的厌氧菌（23/29，73%）多于犬（27/60，45%；P = .003）。
猫和犬胸腔积脓的病因相似。与犬相比，猫的胸腔积液细胞计数更高，每位患者的细菌分离株数量更多，且更常发现细胞内细菌。
