The Cardiology Department at Phyathai 2 International Hospital is a premier facility for comprehensive cardiac care, committed to offering patients cutting-edge therapies and procedures. The hospital offers cutting-edge diagnostic methods to ensure precise evaluations and diagnoses with a focus on providing exceptional care. The hospital's cardiac department offers a variety of diagnostic procedures, such as an ECG, chest X-rays, blood tests, dopplers (an ultrasound of the blood vessels), cardiac computed tomography, cardiovascular magnetic resonance imaging (CMR), etc.

A team of surgeons develops the best treatment strategy after determining the size of the hole in the atria. While it may be possible to control heartbeat and lower the risk of blood clots with medication, surgery is typically necessary to treat the condition. Medium-sized to large atrial septal defects are treated at Phyathai Hospital by patching the heart wall during open heart surgery. Robotic surgery and minimally invasive surgery are both options available to surgeons. Catheter-based repairs are carried out in the hospital's cath lab. The defect is completely sealed, and heart muscles start growing to fill in the gap. Assoc. Prof. Dr. Kittichai Luengtaviboon and Assist. Prof. Dr. Boonlawat Homvises are some of the cardiac specialists at the hospital.