But reduced function of the right ventricle can also occur in heart failure. As blood begins to back up behind the failing left ventricle and into the lungs, it will become harder for the right ventricle to pump returning blood through the lungs. Like the left ventricle, the right ventricle will weaken with time and start to fail.
http://www.webmd.com/heart-disease/heart-failure/tc/right-sided-heart-failure-topic-overview
In addition, the pressure in the veins of the lung increases, which may cause fluid accumulation in the lung. This results in shortness of breath and pulmonary edema. Common causes of left-sided failure include the following: 1  Drinking too much alcohol. 2  Heart attack. 3  Heart muscle infections. 4  High blood pressure. 5  Hypothyroidism. 6  Leaking or narrow heart valves.
http://www.nytimes.com/health/guides/disease/left-sided-heart-failure/overview.html
Medical research articles related to Right heart failure include: 1  Diuretics for heart failure. 2  Pulmonary hypertension: an increasingly recognized complication of hereditary hemolytic anemias and HIV infection. 3  Diagnosis and management of chronic kidney disease. 4  Diagnosis and Treatment of Acute and Chronic Heart Failure.
http://www.rightdiagnosis.com/r/right_heart_failure/intro.htm
By themselves, any one sign of heart failure may not be cause for alarm. But if you have more than one of these symptoms, even if you haven't been diagnosed with any heart problems, report them to a healthcare professional and ask for an evaluation of your heart. View an animation of heart failure. If you have been diagnosed with heart failure, it's important for you to manage and keep track of symptoms and report any sudden changes to your healthcare team. Download our Self-Check Plan for help with tracking your symptoms.
http://www.heart.org/HEARTORG/Conditions/HeartFailure/WarningSignsforHeartFailure/Warning-Signs-of-Heart-Failure_UCM_002045_Article.jsp
Right heart failure: Introduction. Failure of the right side of the heart to pump blood efficiently which causes the blood to back up and produce congestion. It can be caused by conditions such as pulmonary hypertension, heart valve disease and is frequently associated with coronary artery disease.
http://www.rightdiagnosis.com/r/right_heart_failure/intro.htm
Heart failure usually is a chronic, or long-term, condition that gradually gets worse. By the time most people notice and see a doctor about their symptoms, the heart has been failing, little by little, for a long time. This is a good reason to have regular health checkups.
https://www.ucsfhealth.org/conditions/heart_failure/signs_and_symptoms.html
Left-sided heart failure is a life-threatening condition in which the left side of the heart cannot pump enough blood to the body.
http://www.nytimes.com/health/guides/disease/left-sided-heart-failure/overview.html
See full list of 6 causes of Right heart failure. More information about causes of Right heart failure: 1  Underlying causes of Right heart failure. 2  Right heart failure as a complication caused by other conditions. 3  Right heart failure as a symptom.
http://www.rightdiagnosis.com/r/right_heart_failure/intro.htm
Symptoms. People who experience any of the symptoms associated with heart failure, even if they are mild, should consult a doctor as soon as possible. Once a person is diagnosed, it's important to keep track of symptoms and report any sudden changes. Typical signs of heart failure include: Breathlessness or Shortness of Breath (Dyspnea) — When the heart begins to fail, blood backs up in the veins attempting to carry oxygenated blood from the lungs to the heart. As fluid pools in the lungs, it interferes with normal breathing.
https://www.ucsfhealth.org/conditions/heart_failure/signs_and_symptoms.html
A number of studies have shown that heart failure symptoms can be improved with a special type of pacemaker. It paces both the right and left sides of heart. This is referred to as biventricular pacing or cardiac resynchronization therapy.
http://www.nytimes.com/health/guides/disease/left-sided-heart-failure/overview.html
right heart failure symptoms
The  symptoms of  right heart failure is Breathlessness and Shortness of Breath. Breathlessness or Shortness of Breath is the symptom of right heart failure.