Persistent cough

A persistent cough typically results from a respiratory condition rather than a cardiovascular problem. However, if you have a history of cardiovascular disease, you should pay close attention to this symptom, particularly if the cough is persistent, frequently happens at night or while you're sleeping, or if it lasts longer than a week. An ongoing cough that won't go away might be brought on by hazardous cardiac conditions or by external stressors.

Cough is a physiological response of the body to a pathological stimulus. Coughing is beneficial because it helps eliminate foreign objects and fluids that obstruct the airways. However, when a persistent cough does not go away for a long time, it can cause damage to the respiratory tract leading to coughing up blood. Heart failure is the primary cause of cardiovascular illnesses that result in a cough. Blood pools in the lungs as a result of decreased cardiac output, or the amount of blood being delivered to the body. The patient experiences a painful and protracted cough that gets worse when they lie down as a result of the blood and fluid in the blood vessels leaking out and into the alveoli.