Definition. Pulmonary hypertension is a rare lung disorder characterized by increased pressure in the pulmonary artery. The pulmonary artery carries oxygen-poor blood from the lower chamber on the right side of the heart (right ventricle) to the lungs where it picks up oxygen.ulmonary hypertension is present when the blood pressure in the circulation of the lungs is measured at greater than 25 mm of mercury (Hg) at rest or 30 mm Hg during exercise. Pulmonary hypertension can be either primary or secondary: 1  Primary pulmonary hypertension. 2  The cause of pulmonary hypertension is unknown.
Serve gravy with the meat and the vegetables. How to Make a Pot Roast -- Oven Directions. Preheat the oven to 325 degrees F. Prepare as directed above, except in Step 3, bake pot roast, covered, for 1 hour.Add the vegetables and potatoes as directed. Cover and bake 45 to 60 minutes more or until the meat is tender.Prepare the gravy in a saucepan as directed in Step 7.erve gravy with the meat and the vegetables. How to Make a Pot Roast -- Oven Directions. Preheat the oven to 325 degrees F. Prepare as directed above, except in Step 3, bake pot roast, covered, for 1 hour.
1. Preheat the oven to 225 degrees. 2. Place the chuck roast over the vegetables. Turn off the heat under the dutch oven and place the chuck roast back inside, resting it over the vegetables. 1  If you don't have a dutch oven, place the vegetables and chuck roast into a 3 inch (7.6 cm) deep roasting pan.t's an inexpensive cut, with a rich, delicious flavor that makes it a classic main dish for a big home-cooked meal. For tender, pull-apart meat, it should be slow cooked to allow time for the meat to soften and become juicy. Read on to learn how to make a chuck roast. 1  Prep time: 30-45 minutes. 2  Cook time: 3-4 hours.