https://www.vetsurgeon.org/f/clinical-questions/17705/ecg-of-possible-pulmonic-stenosis 12wk puppy (PomXJRT I think) with loud grade 5/6 systolic murmur PMI over pulmonic area I think and radiating to right side of chest. Did an ECG mainly for interest using a cheapo handheld medical ECG with only 3 leads (red, yellow and green)en-USTelligent Community 10https://www.vetsurgeon.org/thread/106048?ContentTypeID=1Wed, 29 Jan 2014 08:48:32 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:5b2369c2-f765-4f0d-ab2c-9a536411477bKirsten Simpson<p>Last puppy I had with a grade 5/6 murmur was referred to the Vet School for cardiology and was found to have Tetralogy of Fallot!! First ever case I&#39;ve seen. He has pulmonic stenosis, VSD and dextraposition of the heart! So Pulmonic stenosis very likely in this case based on murmur alone plus severe VSD or PDA would be my other guesses.</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/106045?ContentTypeID=1Wed, 29 Jan 2014 07:48:04 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:f083d218-560f-4f0f-a7a8-d1f1a2f2dd16Jenny Smith<p>Not much help on the ecg front, but the times I have seen a PDA the murmur has been unmistakeable - sounded like a washing machine. For once the dogs read the textbooks :)</p><div style="clear:both;"></div>