Having performed the nations first minimally invasive coronary surgery in 1994, Dr. Valavanur Subramanian and his team in the Department of Cardiothoracic Surgery continue to innovate and provide leadership for this cutting edge technology. By performing both routine and complex surgeries without making large incisions into the body, our team is able to

http://www.lenoxhillhospital.org/departments.aspx?id=318

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catheter surgeries

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You can use the word "surgery" in the plural when it relates to the procedures.

Since the text does not appear to be geared to the medical profession, I would go with 'heart'

e.g.,

But they also learned that the total costs incurred for congenital heart surgeries varied significantly among the hospitals examined in this study.
https://dcri.org/research/news/2011-news-archives/hospital-c...

By doing so, the life quality of the patients will be enhanced and the costs related to diabetes treatments (heart surgeries, amputation, medication, and collateral complications) will be reduced.
http://www.imaginenationchallenge.ca/winning-ideas-2/

We do 35 heart surgeries in a day. As you keep doing more operations, your results get better."
Shetty said his aim is to reduce the cost of heart surgery to $800 per person.
http://www.studentnews.cnn.com/2011/WORLD/asiapcf/04/06/indi...

While all open heart surgeries involve some risk, major complications are rare because of improved technology and surgical techniques.
http://www.mayoclinic.org/heart-valve-surgery/

This would work if the original text was in a magazine or newspaper, for example, rather than a scientific paper.

The Development of Coronary Artery Surgery
www.ncbi.nlm.nih.gov › ... › Tex Heart Inst J › v.29(1); 2002
by JE Connolly - 2002 - Cited by 2 - Related articles
The Development of Coronary Artery Surgery. Personal Recollections. John E. Connolly, MD. The Department of Surgery, University of California, Irvine, Irvine, ...

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this doesn't need to be in the plural

as they are talking about a 30% reduction in number of operations

so

"surgery" in the singular is just fine.

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cirurgias de cateter

= cardiac catheteris/z/ation procedure

IMHO



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CardioSmart: Cardiac Catheterization
cardiosmart.org/HeartDisease/CTT.aspx?id=318
Cardiac catheterization is a medical procedure used to diagnose and treat certain heart conditions. A long, thin, flexible tube called a catheter is put into a blood ...

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Cirurgia das coronárias - Ponte de safena e mamária
www.copacabanarunners.net/ponte-safena.html - Translate this page
Na cirurgia das coronárias, artérias ou veias de outra parte do corpo do paciente são enxertadas às artérias coronárias, oferecendo um desvio ao estreitamento ...

in fact

if you don't use "coronary artery surgery"

Coronary artery by-pass surgery

is another possibility

Cirurgia das coronárias - Ponte de safena e mamária
www.copacabanarunners.net/ponte-safena.html - Translate this page
Na cirurgia das coronárias, artérias ou veias de outra parte do corpo do paciente são enxertadas às artérias coronárias, oferecendo um desvio ao estreitamento ...

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this site proves my last comments

https://docs.google.com/viewer?a=v&q=cache:5ampVsIpPtYJ:www....

cheers!