The idea of finding and raising the Titanic was thought of very soon after the sinking of the vessel. However, the first successful attempt at locating the Titanic Wreck was in 1985 by a French and American expedition led by Jean-Louis Michel and Dr. Robert Ballard.
The higher the pressure, the harder the heart has to pump. Normal adult blood pressure is defined as a blood pressure of 120 mm Hg1 when the heart beats (systolic) and a blood pressure of 80 mm Hg when the heart relaxes (diastolic).
The five blood pressure ranges as recognized by the American Heart Association are: 1  Normal blood pressure. Congratulations on having blood pressure numbers that are within the normal (optimal) range of less than 120/80 mm Hg. 2  Prehypertension (early stage high blood pressure)