Dr. Edgar H. Tan, a consistent honor student graduated Bachelor of Science major in Biology cum laude from Silliman University in 1982. A Faculty Silver Medal Awardee and graduated cum laude when he earned his Medical Degree from Cebu Doctors' College of Medicine in April of 1986.

He spent one year of post graduate internship at the prestigious Philippine General Hospital from May 1, 1986 to April 30, 1987 and subsequently passed his Philippine Medical Licensure Exam rank #15 in August of 1987. He pursued further training in Internal Medicine from 1989-1993 under the New York Medical College Program where he served as the Administrative Chief Medical Resident for one year. He subsequently did his Fellowship Training in Clinical/Invasive Cardiology under the consortium of Metropolitan & New York Medical College Program from 1993-1996. After his medical training in New York he practiced Internal Medicine/Invasive Cardiology in the State of South Carolina from 1996-1997 with privileges at Marlboro Park Hospital Bennettsville SC & McLeod Regional Medical Center in Florence SC. He holds an active medical license in the State of South Carolina from 1996 up to the present. He decided to come back to Cebu and practice his profession starting February 1998. His foresight at keeping his US medical license active inspite of practicing medicine outside the US has come handy for US expats currently in the Philippines wanting medical care recognized by US HMO's.

Dr. Tan is board certified by the American Board of Internal Medicine, American Board of Cardiovascular Disease and Philippine College of Physicians. He is also trained and certified in the field of Nuclear Cardiology. He is a Fellow of the American College of Physicians, American College of Cardiology and Philippine College of Physicians. His extensive background comes handy by making available the highest standard of US quality medical care right in the heart of Cebu City.

He is affiliated with Cebu Doctors' University Hospital, where he is currently the Section Head of Cardiology Department. He is also affiliated with UCMed and Perpetual Succour Hospital. His practice includes General Internal Medicine & Adult Clinical/Interventional Cardiology. He has admitting privileges at the University of Cebu Medical Center, Cebu Doctors' University Hospital & Perpetual Succour Hospital.

His office is located at Cebu Doctors' University Hospital Medical Arts Building 1, Suite 203-B, OsmeƱa Blvd. Cebu City Philippines. His office hours are 9am-12pm Mon-Sat. and 2pm to 5pm except Wed. and Sat. Tel: (032) 412-5136.

Email:EdgarTan62@yahoo.com or EdgarTanMD@gmail.com

Sunday, December 17, 2006

..........Angioplasty at a Glance!


The artery on the left has a severe narrowing/blockage. The middle artery shows a balloon being inflated to open up the clogged artery and the third shows a deflated balloon being pulled out leaving a widely open artery. This procedure called angioplasty introduced in 1977 revolutionized the way we treat and approach patients with coronary artery disease.

Are Drug Eluting Stents Safe? FEAR NOT!


Stents are the Cardiovascular Interventionalist's "Best Friend". It was Andreas Gruntzig, a Swiss radiologist who first demonstrated in 1977 that occluded coronary artery can be opened with the use of a balloon. A few years later came the use of a "metallic mesh" called stents to complement the plain balloon angioplasty. With widespread acceptance, we soon realized that the use of stents is limited by restenosis (reocclusion of the artery). A phenomenon (Restenosis) secondary to remodelling that usually occurs between 6 months to 1yr from implantation. A second generation stent called "Drug Eluting Stent" (DES) was developed and indeed made a significant impact in reducing restenosis by as much as 50% vs bare metal stent.

Latey however, we have been bombarded with negative news regarding the increased incidence of stent thrombosis (blood clotting) causing an acute myocardial infarction >6months after DES implantation called Late Stent Thrombosis (LST) or even >1-3yrs after implantation called Very Late Stent Thrombosis (VLST). Current indications suggest that these events were limited to those who stopped the use of an antiplatelet drug called Plavix. This incidence is very small yet it is a cause for concern. Overall however, this hardware (DES) is still considered safe and effective and I can almost guaranty its continued use in the years to come.

Our existing guideline dictates the use of plavix for a minimum of 6 months after implant. To date, we don't really know the exact duration of plavix therapy however, current data do suggest that continued use of this drug for at east 3-4 years perhaps indefinitely after implantation maybe warranted until further information is available.

The US FDA is currently convening a panel of experts to study this phenomenon and certainly a new set of guidelines with be forth coming in the near future. Again, let me reiterate that the use of DES is not only safe but also effective albeit, with minor glitch that needs further refinements in terms of guidelines for our coronary patients.
Additional studies are definitely needed to answer the two major questions we have today. These questions include the safe duration for Plavix therapy post implantation and how to identify these subset of patients at risk for this dreaded complication. I shall continue to update this blog, most importantly on this issue as soon as a new set of guidelines are available.

Sunday, November 12, 2006

FAQ's about CABG (Coronary Artery Bypass Grafting) done at Cebu Doctors' University Hospital

It is normal for patients to be apprehensive when they are about to undergo coronary artery bypass surgery. I consider this a normal human reaction which is very much understandable....after all who wouldn't be scared? Their precious lives are at stake. They ought to know more and their questions answered to alleviate their anxiety. For patients who have had surgery in our center and to those who have yet to undergo the procedure, I hope these FAQ's would help you better understand what this is all about.
1. What is the experience of CDUH/Cebu Cardiovascular Center with regard to open heart surgery.
Ans: The center formally opened its doors in November of 1997. Just like any new center, it has it's own share of ups and downs. Since inception until now, it has come a long way from being a start up, to becoming a major player with the most experience in heart surgery in the Visayas and Mindanao.
2. How many centers are doing cardiac surgery in Cebu City?
Ans: There are 3 centers doing heart surgery in Cebu City at the present time, Cebu Doctors' University Hospital, Chong Hua Heart Institute and Perpetual Succour Hospital.
3. Who are the surgeons involved in the different centers catering heart surgery in Cebu City?
Ans: First of all, I would like to let it be known that all our cardiac surgeons are experienced and well trained. The Chairman and Chief cardiac surgeon at CDUH is Dr. Philip Chua. He had his Cardiothoracic Surgery training in Texas Heart Institute under Dr. Denton Cooley. He visits Cebu City every other month.
Dr. Chua's partners at CDUH are Dr. Peter Yb. Mancao (incoming chair of the Dept. of Surgery CDUH) and Dr. Arnold Tan (Chairman, CV surgery at Chong Hua Heart Institute). Both are young, energetic and well trained CV surgeons from the Philippine Heart Center. Dr. Mancao did have a stint at Texas Heart Institute in the US as well. Both Drs. Mancao and Arnold Tan do heart surgery procedures at Chong Hua Heart Institute and Cebu Doctors' University Hospital (CDUH).
The surgeons from Perpetual Succour Hospital come from the Philippine Heart Center in Manila who comes to Cebu City whenever they have cases to do.
4. What kind of cardiac surgeries are done at CDUH?
Ans: Coronary bypass surgery and valve replacement procedures are the most commonly performed at our center, however, any surgical cardiac procedures can be done except heart transplant.
5. What is the success rate of cardiac surgery at CDUH?
Ans: This is a very complex issue to answer that deserves further explanation. Many times I encounter patients that would compare notes without realizing that each patient is unique and that no two patients are alike. Existing medical conditions play an important role in determining the outcome of such a complex procedure. For example, diabetic, poor ejection fraction (weak heart), smoker with COPD (Chronic Obstructive Lung Disease), female sex (women tend to have smaller heart arteries) are all predictors of adverse outcome. The risk of surgery is obviously not equal among the various patients hence, comparing one for the other must be weighed based on the presence or absence of existing comorbidities. Granting that all factors being equal, our outcome at CDUH is at par with the best there is.
6. What preparations are needed prior to cardiac surgery?
Ans: In our center just like anywhere else in Cebu City or the Philippines for that matter, walking blood donors need to be screened and prepared prior to the procedure. Usually, around 5-6 walking donors are needed to donate blood products in the perioperative period. The patients blood is thinned to prevent clotting during surgery so that when it is finished, the thinned blood must be reversed and normalize.
7. What is the cost of surgery in CDUH?
While cost is seldom an issue in western countries, it is one of the most important factor to consider in this part of the world because payment comes right out of the patients own pocket. Our cost is very competitive and because of the many variables in each patient, it is preferred that you discuss this issue with the cardiologist because he/she knows the patients medical condition more than anybody else.
8. Why does CABG cost vary a lot?
Ans: Certain procedures (not routinely done) maybe necessary before surgery i.e. insertion of intraaortic balloon pump and Swan Ganz catheter, to ensure safety and better hemodynamic support during surgery.
Some of the common post operative complications include, atrial fibrillation (irregular heart beat), infection, post pericardotomy syndrome, and bleeding that might require reoperation etc. etc.
Cost can vary not only among patients but also among the various institutions. If cost is of paramount importance, I suggest that you discuss this with your physician privately. In addition, I would advise that you ask around and inquire from patients or friends who have had surgery in the different institutions and ask the following questions: Overall cost of the procedure, length of hospital stay, any complications and their overall experience including level of satisfaction.
My last piece of advise is to go with your "gut feeling" and stay with the doctor/institution you feel you can trust and you feel you are most comfortable with.
9. What is the usual length of hospital stay after cardiac surgery?
Ans: Uncomplicated patients are generally discharged within 7 days. Sometimes patients stay longer for various reasons. Complications are very unpredictable at times so that cost estimates should be taken just as it is, "An estimate"!!
10. Why surgery should be done and how can we get additional information?
Ans: As a rule, we recommend surgery if the patient has multivessel coronary artery disease or if the left main coronary artery is severely diseased. Studies have shown that life is prolonged with surgical intervention in this select group of patients as compared medical therapy alone. For additional information email me at Edgar_Tan@yahoo.com or you can visit: http://www.cebudoctorsuniversity.edu/hospital/cardio/