7. Hypotension
Seventh, hypotension (i.e., low blood pressure), a severe sign in the context of a pulmonary embolism that denotes the need for an aggressive treatment strategy and close monitoring as it could be the beginning of a catastrophic complication known as obstructive shock. Hypotension is usually due to abrupt obstruction of the normal central circulation of blood from the right side of the heart through the lung for oxygenation and then back carrying oxygenated blood to the left side of the heart. When this is altered it causes low cardiac output state and hypotension.
