ABSTRACT
A 2-year-old neutered male Jack Russell terrier dog was presented for persistent, involuntary, bilateral contractions of the hypochondriac regions of the abdominal wall that had been present for 1.5 y. Electrocardiography and fluoroscopic evaluation revealed that the contractions were synchronous with the heartbeat, consistent with a synchronous diaphragmatic flutter. Thoracic radiographs, echocardiography, and serum electrolytes did not identify an underlying cause. This case report describes a rare presentation of idiopathic, long-lasting, synchronous diaphragmatic flutter in a dog. Key clinical message: Synchronous diaphragmatic flutter is a rare condition characterized by contractions of the diaphragm that are synchronous with the heartbeat; this condition can mimic a serious cardiac or respiratory condition.
Flottement diaphragmatique synchrone idiopathique chez un chien Jack Russell terrier de 2 ans. Un chien terrier Jack Russell mâle castré de 2 ans a été présenté pour des contractions persistantes, involontaires et bilatérales des régions hypocondriaques de la paroi abdominale qui étaient présentes depuis 1,5 ans. L'électrocardiographie et l'évaluation fluoroscopique ont révélé que les contractions étaient synchrones avec le rythme cardiaque, et compatibles avec un flottement diaphragmatique synchrone. Les radiographies thoraciques, l'échocardiographie et les électrolytes sériques n'ont pas permis d'identifier de cause sous-jacente. Ce rapport de cas décrit une présentation rare de flottement diaphragmatique idiopathique, de longue durée et synchrone chez un chien.Message clinique clé :Le flottement diaphragmatique synchrone est une affection rare caractérisée par des contractions du diaphragme synchrones avec les battements cardiaques; cette condition peut imiter une affection cardiaque ou respiratoire grave.(Traduit par Dr Serge Messier).
Subject(s)
Abdominal Wall , Dog Diseases , Male , Dogs , Animals , Diaphragm , Dog Diseases/diagnostic imagingABSTRACT
BACKGROUND: In a previous study, telmisartan suppressed aldosterone secretion in healthy cats but not in cats with primary hyperaldosteronism (PHA). HYPOTHESES: Telmisartan suppresses aldosterone secretion in middle-aged healthy cat and cats with diseases that may result in secondary hyperaldosteronism, but not in those with PHA. ANIMALS: Thirty-eight cats: 5 with PHA; 16 with chronic kidney disease (CKD), subclassified as hypertensive (CKD-H) or non-hypertensive (CKD-NH); 9 with hyperthyroidism (HTH); 2 with idiopathic systemic arterial hypertension (ISH); and 6 healthy middle-aged cats. METHODS: Prospective, cross-sectional study. Serum aldosterone concentration, potassium concentration, and systolic blood pressure were measured before and 1 and 1.5 hours after PO administration of 2 mg/kg of telmisartan. The aldosterone variation rate (AVR) was calculated for each cat. RESULTS: No significant difference in the minimum AVR was observed among groups (median [quartile 1 (Q1); quartile 3 (Q3)]: 25 [0; 30]; 5 [-27; -75]; 10 [-6; -95]; 53 [19; 86]; 29 [5; 78]) for PHA, CKD, HTH, ISH, and healthy cats, respectively (P = .05). Basal serum aldosterone concentration (pmol/L) was significantly higher in PHA cats (median [Q1; Q3]: 2914 [2789; 4600]) than in CKD-H cats (median [Q1; Q3]: 239 [189; 577], corrected P value = .003) and CKD-NH cats (median [Q1; Q3]: 353 [136; 1371], corrected P value = .004). CONCLUSIONS AND CLINICAL IMPORTANCE: The oral telmisartan suppression test using a single dose of 2 mg/kg telmisartan did not discriminate cats with PHA from healthy middle-aged cats or cats with diseases that may result in secondary hyperaldosteronism.
