Слайд 1Heart failure treatment and transplantation
РОХИТ БИСВАС
3-й КУРС
Слайд 2Валерий Иванович Шумаков
a Russian surgeon and transplantologist, famous for being the founding
father
of organ transplants in Russia and was a pioneer of artificial organ surgery.
Known
for first successful human-to-human
heart transplant in Russia
Слайд 4The Heart Disease and Stroke Statistics—2019 Update from the Heart
Association indicates that:
116.4 million, or 46% of adults are estimated
to have hypertension. ...
On average, someone dies of CVD every 38 seconds. ...
On average, someone dies of a stroke every 3.70 minutes.
Слайд 5Diagnosis
After the physical exam, your doctor may also order some
of these tests:
Blood tests blood sample to look for signs
of diseases that can affect the heart. He or she may also check for a chemical called N-terminal pro-B-type natriuretic peptide (NT-proBNP) if your diagnosis isn't certain after other tests.
B-type natriuretic peptide (BNP) blood test. BNP is a substance secreted from the heart in response to changes in blood pressure that occur when heart failure develops or worsens. BNP blood levels increase when heart failure symptoms worsen, and decrease when the heart failure condition is stable. The BNP level in a person with heart failure -- even someone whose condition is stable -- may be higher than in a person with normal heart function. BNP levels do not necessarily correlate with the severity of heart failure.
Слайд 6Stress test
Cardiac computerized tomography (CT) scan
Magnetic resonance imaging (MRI). In a
cardiac MRI, you lie on a table inside a long
tubelike machine that produces a magnetic field, which aligns atomic particles in some of your cells. Radio waves are broadcast toward these aligned particles, producing signals that create images of your heart.
Слайд 7Magnetic resonance imaging (MRI).
Electrocardiogram (ECG).
Chest X-ray.
Echocardiogram. An echocardiogram uses
sound waves to produce a video image of your heart.
This test can help doctors see the size and shape of your heart along with any abnormalities. An echocardiogram measures your ejection fraction, an important measurement of how well your heart is pumping, and which is used to help classify heart failure and guide treatment.
Слайд 8Treatment
Medications
Angiotensin-converting enzyme (ACE) inhibitors.
These drugs help people with systolic heart
failure live longer and feel better. ACE inhibitors are a
type of vasodilator, a drug that widens blood vessels to lower blood pressure, improve blood flow and decrease the workload on the heart. Examples include enalapril (Vasotec), lisinopril (Zestril) and captopril (Capoten).
Angiotensin II receptor blockers.
These drugs, which include losartan (Cozaar) and valsartan (Diovan), have many of the same benefits as ACE inhibitors. They may be an alternative for people who can't tolerate ACE inhibitors.
Слайд 9Diuretics. Often called water pills, diuretics make you urinate more frequently
and keep fluid from collecting in your body. Diuretics, such
as furosemide (Lasix), also decrease fluid in your lungs so you can breathe more easily.
Because diuretics make your body lose potassium and magnesium, your doctor may also prescribe supplements of these minerals. If you're taking a diuretic, your doctor will likely monitor levels of potassium and magnesium in your blood through regular blood tests.
Слайд 10Inotropes. These are intravenous medications used in people with severe heart
failure in the hospital to improve heart pumping function and
maintain blood pressure.
Digoxin (Lanoxin). This drug, also referred to as digitalis, increases the strength of your heart muscle contractions. It also tends to slow the heartbeat. Digoxin reduces heart failure symptoms in systolic heart failure. It may be more likely to be given to someone with a heart rhythm problem, such as atrial fibrillation.
Слайд 11Aldosterone antagonists. These drugs include spironolactone (Aldactone) and eplerenone (Inspra). These
are potassium-sparing diuretics, which also have additional properties that may
help people with severe systolic heart failure live longer.
Unlike some other diuretics, spironolactone and eplerenone can raise the level of potassium in your blood to dangerous levels, so talk to your doctor if increased potassium is a concern, and learn if you need to modify your intake of food that's high in potassium.
Слайд 12Beta blockers. This class of drugs not only slows your heart
rate and reduces blood pressure but also limits or reverses
some of the damage to your heart if you have systolic heart failure. Examples include carvedilol (Coreg), metoprolol (Lopressor) and bisoprolol (Zebeta).
These medicines reduce the risk of some abnormal heart rhythms and lessen your chance of dying unexpectedly. Beta blockers may reduce signs and symptoms of heart failure, improve heart function, and help you live longer.
Слайд 13Surgery and medical devices
Coronary bypass surgery.
If severely blocked arteries are
contributing to your heart failure, your doctor may recommend coronary
artery bypass surgery. In this procedure, blood vessels from your leg,
arm or chest bypass a blocked
artery in your
heart to allow blood to
flow through
your heart more freely.
Слайд 14Heart valve repair or replacement.
If a faulty heart valve causes
your heart failure, your doctor may recommend repairing or replacing
the valve. The surgeon can modify the original valve to eliminate backward blood flow. Surgeons can also repair the valve by reconnecting valve leaflets or by removing excess valve tissue so that the leaflets can close tightly. Sometimes repairing the valve includes tightening or replacing the ring around the valve (annuloplasty).
Valve replacement is done when valve repair isn't possible. In valve replacement surgery, the damaged valve is replaced by an artificial (prosthetic) valve.
Certain types of heart valve repair or replacement can now be done without open heart surgery, using either minimally invasive surgery or cardiac catheterization techniques.
Слайд 16Implantable cardioverter-defibrillators (ICDs). An ICD is a device similar to a
pacemaker. It's implanted under the skin in your chest with
wires leading through your veins and into your heart.
The ICD monitors the heart rhythm. If the heart starts beating at a dangerous rhythm, or if your heart stops, the ICD tries to pace your heart or shock it back into normal rhythm. An ICD can also function as a pacemaker and speed your heart up if it is going too slow.
Слайд 18Cardiac resynchronization therapy (CRT)
biventricular pacing. A biventricular pacemaker sends timed electrical
impulses to both of the heart's lower chambers (the left
and right ventricles) so that they pump in a more efficient, coordinated manner.
Many people with heart failure have problems with their heart's electrical system that cause their already-weak heart muscle to beat in an uncoordinated fashion. This inefficient muscle contraction may cause heart failure to worsen. Often a biventricular pacemaker is combined with an ICD for people with heart failure.
Слайд 20Ventricular assist devices (VADs).
A VAD, also known as a mechanical
circulatory support device, is an implantable mechanical pump that helps
pump blood from the lower chambers of your heart (the ventricles) to the rest of your body. A VAD is implanted into the abdomen or chest and attached to a weakened heart to help it pump blood to the rest of your body.
Doctors first used heart pumps to help keep heart transplant candidates alive while they waited for a donor heart. VADs may also be used as an alternative to transplantation. Implanted heart pumps can enhance the quality of life of some people with severe heart failure who aren't eligible for or able to undergo heart transplantation or are waiting for a new heart.
Слайд 24Heart Transplant
Your surgeon then removes the diseased heart and sews the donor heart into
place. He or she then attaches the major blood vessels
to the donor heart. The new heart often starts beating when blood flow is restored. Sometimes an electric shock is needed to make the donor heart beat properly.
Слайд 25Factors that may affect your eligibility for a heart transplant
Are
an advanced age that would interfere with the ability to
recover from transplant surgery
Have another medical condition that could shorten your life, regardless of receiving a donor heart, such as a serious kidney, liver or lung disease
Have an active infection
Have a recent personal medical history of cancer
Are unwilling or unable to make lifestyle changes necessary to keep your donor heart healthy, such as not drinking alcohol or not smoking
Слайд 26What are the risks of a heart transplant?
As with any
surgery, complications may occur. Potential risks of a heart transplant
may include:
Infection
Bleeding during or after the surgery
Blood clots that can cause heart attack, stroke, or lung problems
Breathing problems
Kidney failure
Coronary allograft vasculopathy (CAV). This is a problem with the blood vessels that carry blood to the heart muscle itself. They become thick and hard. This can cause serious heart muscle damage.
Failure of the donor heart
Death
Слайд 27What kind of diseases require a heart transplant?
A transplant can
greatly enhance the quality and length of life for people
with severe heart diseases, such as:
Advanced heart failure.
Arrhythmia.
Cardiomyopathy.
Congenital heart disease.
Coronary artery disease.
Heart valve diseases.
Слайд 29Orthotopic Heart Transplantation
Orthotopic heart transplantation is carried out via a median sternotomy, and
the general approach is similar to that used for coronary revascularization or
valve replacement. Frequently, patients will have undergone a prior median sternotomy; repeat sternotomy is cautiously performed using an oscillating saw. The groin should be prepped and draped to provide a rapid route for cannulation for cardiopulmonary bypass (CPB) if necessary. After the pericardium is opened, the aorta is cannulated as distally as possible and the IVC and SVC are individually cannulated via the high right atrium. Manipulation of the heart before institution of CPB is limited if thrombus is detected in the heart with transesophageal echocardiography (TEE
Слайд 30 After initiation of CPB and cross-clamping of the aorta,
the heart is arrested and excised The aorta and PA
are separated and divided just above the level of their respective valves, and the atria are transected at their grooves. A variant of this classic approach totally excises both atria, mandating bicaval anastomoses. This technique may reduce the incidence of atrial arrhythmias, better preserve atrial function by avoiding tricuspid regurgitation, and enhance cardiac output (CO) after transplantation.
Слайд 32Heterotopic heart transplantation (HHT)
is a surgical procedure that allows the graft
to be connected to the native heart in a parallel fashion. The
main advantage of HHT is to assist the patient's native heart and to maintain circulation in the cases of severe acute rejection
It is once-in-a-lifetime procedure a doctor performs. The surgery – known as a heterotopic or piggyback heart transplant – is rare and worldwide only about 150 such procedures have ever been reported