SAS – Subaortic Stenosis In A 9-Month-Old Male Mastiff Mixed Breed: Our Case Of the Month July 2022

Case Of the Month

SAS – Subaortic Stenosis In A 9-Month-Old Male Mastiff Mixed Breed: Our Case Of the Month July 2022

A 9-month-old intact male Mastiff mixed breed with history of being underweight presented at a referral facility for echocardiogram due to heart murmur.

A 9-month-old intact male Mastiff mixed breed with history of being underweight presented at a referral facility for echocardiogram due to heart murmur.

DX

Subaortic stenosis with concurrent mitral and tricuspid insufficiency - Secondary left ventricular hypertrophy. - Periodic arrhythmia.

Outcome

Atenolol therapy was recommended in this patient depending upon EKG results. Guarded to poor long-term prognosis. Blood pressure measurements were indicated if not already performed. Follow up with the patient’s RDVM was unfortunately not available at the time of this study posting, we hope he is doing ok.

Image Interpretation

The echocardiogram in this patient demonstrated normal left atrial size based on 3 separate methods of LA evaluation. Mitral insufficiency noted at 6.3 m/sec. Concentric left ventricular hypertrophy noted in this patient with hypercontractility. The myocardium presented normal echogenicity without subjective evidence of significant fibrotic or ischemic disease. Aortic velocity was excessive at 6.0 m/sec with secondary aortic insufficiency at 5.0 m/sec. The right atrium and auricle revealed normal size, structure and content. No evidence of masses was noted. Tricuspid insufficiency noted at 2.8 m/sec. The right ventricle was of normal size (1/3 diameter of LV), chordae structure, myocardial echogenicity and thickness. Pulmonary outflow tract assessment revealed normal valve structure, laminar flow, and diameter (approx.1:1 pa/ao ratio). No visible pericardial or free pleura fluid was noted. The cranial mediastinum and pericardial and extra-cardiac regions were free of masses in the visible window. Periodic arrhythmia noted.

Patient Information

Patient Name : Thor SAS JENNA Animal Sounds 2022
Gender : Male, Intact
Species : Canine
Status : Complete

Clinical Signs

  • "Not Doing Right"
  • Heart Murmur

History

  • Heart Murmur

Exam Finding

  • Underweight

Images

laao_screen_shot_2022-07-11_at_5lv-mode_screen_shot_2022-07-11_at_6pa_screen_shot_2022-07-11_at_5sas_screen_shot_2022-07-11_at_5aorta_screen_shot_2022-07-11_at_5

Clinical Signs

  • "Not Doing Right"
  • Heart Murmur
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