LEFT-SIDED CHF - A disorder where the left side of the heart fails to pump blood effectively. This results in a back flow (and pressure) and congestion of blood into the lungs. The causes of this condition include, valvular heart disease, cardiomyopathy, anemia, hyperthyroidism, atrial myxoma, drug toxicity, and congenital heart disease. Risk factors include diabetes, alcoholism, obesity, and smoking. Symptoms include increasing shortness of breath with activity and while lying flat. Other symptoms include cough, palpitations, fatigue, decreased urine production, and waking in the middle of the nigh with difficulty breathing. Complications include pulmonary edema, arrhythmias, and pleural effusion.