The pacemaker is as small as a capsule

HANOI The National Cardiovascular Institute applies a new technique to treat cardiac arrhythmias by placing a wireless pacemaker directly into the patient’s heart chamber.

Dr. Pham Tran Linh, Head of Department C5, National Heart Institute, said that this is a very small machine just like a capsule and weighs only 2 g, 93% lighter than a generator. Normal heart rate (28 g). The device is fully located in the patient’s right ventricle, and is inserted into the right ventricle via a catheter from the femoral vein. This device allows patients to create a heartbeat for up to 12 years. The device was licensed in 2016 by the US Food and Drug Administration (FDA).

“This is the most advanced treatment for arrhythmia,” said Dr. Linh. However, the price of this type of pacemaker is relatively high, about VND 380 million, so patients will have difficulty paying the costs.

The first patient to use the new technique was a 75-year-old man. More than a year ago, the patient fainted continuously, his heart beat was very slow, and he was diagnosed with complete atrioventricular block.

The patient was implanted with a regular 2-chamber pacemaker with 2 electrodes in the right and right atrium. After the intervention, he improved many symptoms, no more fainting, gradually recovered health. However, two weeks before the left breast area where the pacemaker implant was located was red, swollen and painful, revealing the pacemaker causing discomfort and fatigue.

Doctors this time diagnose patients with complications of pacemaker infection. The only treatment is to remove the old device and treat a systemic infection. However, if the patient removes the pacemaker and appears with a slow heartbeat, the atrioventricular block is completely life-threatening. On the other hand, after removal of the old pacemaker, a new pacemaker must be implanted with electrodes inserted into the heart chamber at a different position from the original position, and the risk of a second pacemaker infection is very high.
The doctor selected the solution to remove the old pacemaker and the two infected electrodes, cut and treat antibiotics in the old drive under the left chest muscle. At the same time, putting temporary pacemakers on skin supports heart contraction to ensure hemodynamics for patients. After two weeks of treatment, the infection was under control and the old drive was clean. At this time, the doctors decided to implant the wireless pacemaker directly into the right ventricular chamber to create a permanent pacemaker for the patient, ensuring the heart works almost normal and will avoid the risk of recurrent infection. Pacemakers under the skin.

With the technical assistance of Dr. Zulkeflee Muhammad from the National Heart Center Malaysia, Vietnamese doctors have successfully placed the wireless pacemaker. After placing the device, the patient’s heartbeat was stable, discharged after a day.
Associate Professor Pham Manh Hung, Director of the National Heart Center, said that every year, the Heart Institute inpatient treatment for nearly 30,000 patients with severe cardiovascular disease, outpatient examination for hundreds of thousands of times, echocardiography for over 60,000 visits. Especially, the three specialties are Cardiovascular Interventions, Cardiovascular Surgery and Emergency – cardiac care, each year more than 12,000 patients receive cardiovascular intervention. More than 1,000 patients underwent open heart bypass surgery, bypass bypass, repair of heart structures … including many of the leading advanced techniques in the world.

The National Cardiology Institute of Vietnam is the leading center in training and directing the whole country for cardiology. The Institute is one of the very few centers in the country that has the capacity to train and transfer technology to international colleagues, including to developed countries.
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