I am Dr Tryzelaar and a retired cardio thoracic surgeon. After a life-long career in the treatment of heart diseases, I created this web site to help you with your cardiac disease questions. This is what you'll get:





Healthline Best of the Web

Follow Us


Newsletter Signup




Ask the Doctor your cardiac related questions today!

2 years ago my husband had quad CABG. (No heart attack). During a colonoscopy 3 years ago they noticed PVCc on his ECG, he wasn't even aware of them. However, in the last year they have increased noticably, he says they "wear him out". He is on a beta blocker and Lisinopril and Pravastin. He has...
Hi Mary, It is unlikely his meds have anything to do with the PVCs. The Beta Blockers reduces their frequency but not eliminate them. However, any time a change occurs it should be checked with a re-evaluation. That may include blood tests, an EKG, Holter monitor and/or a...


Sign up for our new Ask Dr T Live Video Session on 4/25/14!


If you have a Google Gmail account, some of you can participate via video, while an unlimited number of others can ask questions after signing up. 


I'll try to answer your questions during the live show and expect the session will last about an hour. If sucessful, we'll do this on a weekly basis. 


I will answer questions from the form you can find here:










Reports, medical articles,
and industry news information
for health care professionals.

Surgical competence requires a complex set of interdependent roles and abilities that include psychomotor, cognitive,...
Surgical Anatomy Lecture, Tufts University School of Medicine GI Tract Embryology Joan F. Tryzelaar, MD, FACS, FACCP 1/...
Surgical Anatomy Lecture, Tufts University School of Medicine Embryology of Body Cavities Joan F. Tryzelaar, MD, FACS,...