Arguments for a Celtic cult of the severed head include the many sculptured representations of severed heads in La Tène carvings, and the surviving Celtic mythology, which is full of stories of the severed heads of heroes and the saints who carry their own severed heads, right down to Sir Gawain and the Green Knight, where the Green Knight picks up his own severed head after Gawain has struck it off in a beheading game, just as Saint Denis carried his head to the top of Montmartre.A further example of this regeneration after beheading lies in the tales of Connemaras Saint Féchín, who after being beheaded by Vikings carried his head to the Holy Well on Omey Island and on dipping it into the well placed it back upon his neck and was restored to full health. Classical antiquity
The ancient Greeks and Romans regarded decapitation as a comparatively honorable form of execution for criminals. The traditional procedure, however, included first being tied to a stake and whipped with rods. Axes were used by the Romans, and later swords, which were considered a more honorable instrument of death. Those who could verify that they were Roman citizens were to be beheaded, rather than undergoing the much more horrific experience of crucifixion. In the Roman Republic of the early 1st century BC, it became the tradition for the severed heads of public enemies—such as the political opponents of Marius and Sulla, for example—to be publicly displayed on the Rostra in the Forum Romanum after execution.
As pulmonary heart disease progresses, most individuals will develop symptoms like:
Shortness of breath
Wheezing
Cyanosis
Ascites
Jaundice
Enlargement of the liver
Raised jugular venous pressure (JVP)
Third heart sound
Intercostal recession
Presence of abnormal heart sounds

Causes
The causes of pulmonary heart disease (cor pulmonale) are the following:

Acute respiratory distress syndrome (ARDS)
COPD
Primary pulmonary hypertension
Blood clots in lungs
Kyphoscoliosis
Interstitial lung disease
Cystic fibrosis
Sarcoidosis
Obstructive sleep apnea (untreated)
Sickle cell anemia
Bronchopulmonary dysplasia (in infants)

Pathophysiology
The pathophysiology of pulmonary heart disease (cor pulmonale) has always indicated that an increase in right ventricular afterload causes RV failure (pulmonary vasoconstriction, anatomic disruption/pulmonary vascular bed and increased blood viscosity are usually involved), however most of the time, the right ventricle adjusts to an overload in chronic pressure. According to Voelkel, et al., pressure overload is the initial step for changes in RV, other factors include:
Ischemia
Inflammation
Oxidative damage
Epigenetics
Abnormal cardiac energetics

Diagnosis
Investigations available to determine the cause of cor pulmonale include the following:
Chest x-ray – right ventricular hypertrophy, right atrial dilatation, prominent pulmonary artery
ECG – right ventricular hypertrophy, dysrhythmia, P pulmonale (characteristic peaked P wave)
Thrombophilia screen- to detect chronic venous thromboembolism (proteins C and S, antithrombin III, homocysteine levels)

Differential diagnosis
The diagnosis of pulmonary heart disease is not easy as both lung and heart disease can produce similar symptoms. Therefore, the differential diagnosis (DDx) should assess:
Atrial myxoma
Congestive heart failure
Constrictive pericarditis
Infiltrative cardiomyopathies
Right heart failure (right ventricular infarction)
Ventricular septal defect

Treatment
The treatment for cor pulmonale can include the following: antibiotics, expectorants, oxygen therapy, diuretics, digitalis, vasodilators, and anticoagulants. Some studies have indicated that Shenmai injection with conventional treatment is safe and effective for cor pulmonale (chronic).Treatment requires diuretics (to decrease strain on the heart).