Patients who are suffering from heart failure now have a new treatment option that will give them a new lease of life.
Shortness of breath. Fatigue. Edema, or excessive fluid build-up in the body. Heart palpitations.
These are just some of the symptoms that patients with heart failure have to battle everyday.
Traditional treatments for heart failure can include daily medication, while more serious cases may require surgery like angioplasty or even a heart transplant, if doctors find that the patient's heart is damaged beyond repair.
But now, doctors are turning to a Left Ventricular Assist Device, or LVAD, as a long-term treatment option for patients. One such doctor is cardiologist Dr Kenneth Ng from the Novena Heart Centre at Mount Elizabeth Novena Hospital, who specialises in taking care of patients with heart failure.
So what is an LVAD? It is basically a pump that is placed in the left ventricle of the heart and connects with the aorta, one of the heart's main blood vessels, with the aim of assisting a heart that is too weak to fulfil its function of pumping blood to the rest of the body. In the past, the LVAD was used as a "bridge to transplant" - a device to help keep a weak heart pumping until a suitable organ was found to allow the patient to undergo a heart transplant; or as a "bridge to recovery", to give the organ a chance to recover or grow stronger without putting too much stress on it.
New Hope for the Future
Early last year, the LVAD was approved by the Food and Drug Administration (FDA) in the United States as a destination therapy, which meant that doctors were allowed to use the device as permanent treatment for patients whose only option used to be a heart transplant. "Only two or three heart transplants are performed each year, and donor organs are few and far between," reveals Dr Ng. This is part of the reason why the use of LVAD as a destination therapy is growing in popularity. "Cumulative research evidence about the LVAD strongly supports the safety and benefits of the device," he adds.
To date, Dr Ng and his partners at Novena Heart Centre have performed over 10 cases of this surgery, and he believes that it is a very viable treatment option because it allows patients to return to their "normal" life post-surgery. "Most patients do very well after the surgery, and are able to return to the kind of lifestyle they enjoyed before they fell ill, allowing them to continue to be productive members of society," he states.
The Journey to Singapore
One patient who has experienced the life-changing effects of having the LVAD procedure is Mr Tin Win from Myanmar. The 71-year-old had his first bypass surgery in London in 1961, and led a full and active lifestyle until 2004, when he was diagnosed with dilated cardiomyopathy, a condition where the heart is weakened and unable to pump blood through the body efficiently. Last year, he started suffering from episodes of breathlessness and fatigue. "I felt very tired very easily, and my feet would swell. I would be admitted to hospital, the doctors would give me injections, and I would feel better and get discharged. But then the same symptoms would come back and I would have to go through the whole cycle of treatment again," explains Mr Tin. "My doctor in Myanmar tried to treat the condition with medication, but every time I went home I would start feeling tired again - I had no idea I was suffering from heart failure. Finally, when we asked her if there was a more effective treatment, she told me about the LVAD as an option and put me in touch with Dr Lim Chong Hee, a cardiothoracic surgeon in Singapore."
"Honestly, when I first came to Singapore for my appointment with Dr Lim, I was still hoping that he would be able to find some medicine to help me. I arrived on 21 March, 2013 and was admitted directly into the ICU from the airport," he recalls.
Partners in Novena Heart Centre, Dr Lim and Dr Ng worked together from the start to find a way to help Mr Tin, but found that medication was just not working for him. "When I met him, Mr Tin had advance heart failure, which was evidenced by the poor left ventricle ejection fraction, recurrent admissions for heart failure, and inotrope dependence," recalls Dr Ng. While there was the option of continuing with long-term inotropic therapy (medication) as a treatment to keep him out of heart failure, this would also shorten his lifespan. "We then considered him for the LVAD treatment. And because he was classified as INTERMACS category 3 [stable but dependent on inotropes], all other organ function was normal, and he had not had any prior stroke, I felt that he was a very good candidate for this treatment."
Life Changing Experience
The LVAD procedure was carried out on 29 March with the assistance of Dr Lim Chong Hee and Dr Lim Yeong Phang, another cardiothoracic surgeon. "Our biggest concerns about the surgery were actually during the peri-operative period, where there is a possibility that the patient can go into multi-organ failure, bleeding or severe infections. We tried to prevent them by optimising the patient before surgery by making sure that all the organs were functioning well, and improving the patient's nutritional status," shares Dr Ng.
Another concern for this procedure was the everyday use of the device in Myanmar. "We were worried about the reliability of the electricity supply because the batteries of the device need to be kept charged, and that the patient lives very far from our facility," says Dr Ng. To ensure that they have a constant supply of electricity, Mr Tin's family bought a generator for his home. The vendor will also be flying to Myanmar to have a look at the home facilities and layout, and to make the necessary changes before Mr Tin is due to return home. "To help with the use of the device, our team has taught not just Mr Tin but his family members to recognise the various alarms for the machine. We invited a cardiologist from Myanmar to Singapore to learn how to manage the device. The mobile phone and internet will also help us keep the lines of communication open."
Looking Ahead
Speaking to us a month after the procedure, Mr Tin was happy to be out and about. "Everyone tells me that considering that I had major open-heart surgery, my recovery has been spectacular. And I think Dr Ng and all the medical staff at the hospital had a big role to play in this. They took very good care of me and paid attention to everything I said - if I had a complaint or felt funny, they didn't ignore me and checked to make sure I would feel better," he shares.
Dr Ng is also very happy with Mr Tin's recovery. "I am very happy with the results - Mr Tin is well and able to move around independently without any symptoms, and his progress has been smooth," he smiles. "And the benefit of this surgery is that the major complication rate for the device is less than five per cent. The LVAD doesn't put many limitations on the patient - aside from having to be mindful of the life span of each battery charge, and not being able to immerse themselves in water, patients are able to go back to their original lifestyle."
Now that he is on his feet again, Mr Tin is looking forward to going back home to Yangon. "I can't wait to go back and spend time with my friends, exploring all the best restaurants in the city," he smiles. "And I'm looking forward to spending some time just relaxing on the beach!"