One of the consequences of heart failure is the inability of the heart to properly contract and adequately pump blood out of the heart into the body. This is dangerous as blood backs up, causing symptoms of fluid overload like swelling and shortness of breath. Cardiac resynchronization therapy (CRT) is a treatment that can help the heart pump better by restoring synchrony between the right and left ventricles. It involves simultaneously stimulating both ventricles through wires to improve heart contractions. This CRT technology is incorporated into devices like pacemakers and implantable cardioverter defibrillators (ICD). Other techniques like conduction system pacing also exist, so it is important to be aware of the risks, benefits, and alternatives of all available options.