Case 37

Primary clinician: Sarah Miller, DVM, DACVIM (Cardiology)
Supervising clinician: Mark D. Kittleson, DVM, PhD, DACVIM (Cardiology)

Case 37 patient photo

Signalment

  • Nine-week-old male rottweiler weighing 9 kg (Howie).

Presenting Complaint

  • Heart murmur

Pertinent History

  • Howie presented to the UCD VMTH Cardiology Service for evaluation of a III/VI systolic murmur ausculted by the referring veterinarian. He and his sister were adopted 3 weeks ago. Four other puppies in the litter were stillborn, and 2 were presumably consumed by the mother. Howie has always been smaller and tires more easily than his sister. He has shown no signs of coughing, collapse or dyspnea/tachypnea.
  • No c/s/v/d/PU/PD. Diet: Science Diet puppy.

Physical Examination

  • Gen: BARH. T=101.0, P=160, R=pant. Wt=9.0 kg. BCS=5/9.
  • Integ: Full clean hair coat. No masses or parasites.
  • EENT: Clear OU. Mild ceruminous discharge AU. Slight serous nasal discharge bilaterally. MM pink. CRT < 2 sec. No dental calculus or gingivitis.
  • MS: BCS=5/9. Ambulatory x 4.
  • CV: HR=160. Grade V/VI systolic murmur heard bilaterally, loudest over right basilar region. Palpable thrill at right base. Grade I/VI diastolic murmur heard best at left apex. Femoral pulses strong and synchronous.
  • Resp: RR=pant. Lungs clear and eupneic.
  • GI: Soft non-painful abdomen. Smooth intestinal loops. No masses or organomegaly.
  • GU: Prepuce clean. Testicles descended bilaterally.
  • NS: Mentally alert.
  • LN: Mandibular, prescapular, popliteal < 0.5 cm.

Problems

  • Grade V/VI systolic right basilar heart murmur
  • Grade I/VI left apical diastolic heart murmur

Quiz

1. Which of the following cardiac abnormalities would be considered least likely based on the location of the systolic heart murmur?

2. What is the most likely cause of a diastolic heart murmur in a dog?