And the companion Sasaa bin SohanAl Abdi who was the ambassador of the Commander of the Faithful to Mu`awiyah, and he and Mu`awiyah have many stories that historians have transmitted to us. Historians have called them this title because they agreed on a Thursday that they would die for the sake of the Commander of the Faithful. The tomb of Zayd ibn Suhan is still visited in Bahrain and is called by Bahrainis as Prince Zaid, as well as the tomb of the great companion Sasaa bin Sohan Al Abdi who is buried in Bahrain. Oman
In Oman, Sayyid is used by members of the Al Said ruling royal family. The absolute ruler of the country retains the title Sultan with members of the royal family eligible for succession to the throne given the title Sheikh, these may also use the title Sayyid should they wish to, although as Sheikh supersedes this, it is not a widely used practice. Members of the extended family or members by marriage carry the title Sayyid or Sayyida for a female. Such titles in Oman are hereditary through paternal lineage or in some exceptional circumstances, such as an honorary title given by royal decree. Members of the Al Said family use the term Sayyid solely as a title and not as a means of indicating descent, as the Al Said royal family does not descend from Banu Hashim or from Imam Ali and instead descends from the Qahtanite Zahran tribe.
Indeed, in aortic stenosis, because of the fixed obstruction to blood flow out from the heart, it may be impossible for the heart to increase its output to offset peripheral vasodilation.A third mechanism may sometimes be operative. Due to the hypertrophy of the left ventricle in aortic stenosis, including the consequent inability of the coronary arteries to adequately supply blood to the myocardium (see "Angina" below), abnormal heart rhythms may develop. These can lead to syncope.Finally, in calcific aortic stenosis at least, the calcification in and around the aortic valve can progress and extend to involve the electrical conduction system of the heart. If that occurs, the result may be heart block, a potentially lethal condition of which syncope may be a symptom. Congestive heart failure
Congestive heart failure (CHF) carries a grave prognosis in people with AS. People with CHF attributable to AS have a 2-year mortality rate of 50% if the aortic valve is not replaced. CHF in the setting of AS is due to a combination of left ventricular hypertrophy with fibrosis, systolic dysfunction (a decrease in the ejection fraction) and diastolic dysfunction (elevated filling pressure of the LV). Associated symptoms
In Heydes syndrome, aortic stenosis is associated with gastrointestinal bleeding due to angiodysplasia of the colon. Recent research has shown that the stenosis causes a form of von Willebrand disease by breaking down its associated coagulation factor (factor VIII-associated antigen, also called von Willebrand factor), due to increased turbulence around the stenotic valve.