Rupture involving the splenic vein, the gastrointestinal tract, or the pancreatic ducts. Part 2: Causes and Risk Factors What causes splenic artery aneurysm? Possible causes include atherosclerosis, portal hypertension due to liver cirrhosis, and pregnancy. Multiparity and pregnancy-associated hormonal effects as well as portal hypertension are believed to cause dilatation of the weak walls of the splenic artery. Other possible causes include congenital defects such as berry aneurysms and arterio-venous malformations.
Causes The following conditions can lead to heart failure, but many people are unaware that they have them: Coronary artery disease is the most common cause of heart failure. It causes constriction of arteries that supply blood to the heart muscle. A previous heart attack can be separated from the scar tissue that interferes with the normal pump ability of the heart muscle. High blood pressure (also called hypertension) allows the heart to work harder than blood circulation around the body. Heart valve disease caused by rheumatic fever or other infections in the past will force your heart to work harder to maintain blood flow; Over time, this extra work weakens the heart.
Why Buildings Collapse or Fail Introduction Buildings and structures are designed to contain and support certain load, the loads mostly be the weight of the live loads and the dead loads. The live loads are like pressure of wind rain and snow, the dead load is the building weight including floor and finishing weight mechanical weight. The causes of building collapse like in accurate design, constructs faults, excessive loads, failure of foundation and combination of more than cause or natural hazards. The inaccurate design is completely the structure engineer fault. The constructions faults may cause by contractors not following the code specifications or by using some low quality materials, The excessive loads such as massive storage load or heavy
FIG : NORMAL HEART FIG : HYPERTROPHIC HEART (Hypertrophic cardiomyopathy,Cleveland clinic) Above figure in the left shows physiology of the normal heart while the right one shows physiology of hypertrophic heart having leaky mitral valve, thickened septum and narrowed outflow tract. Symptoms of hypertrophic cardiomyopathy: (Marian Ali .,2010) • Arrhythmias: This condition mainly occurs when heart rhythms of the patient are irregular due to improper flow of blood from the heart to rest of the body. This could further lead to cardiac failure along with sudden death of the patient. • Syncope: It does not occur frequently but usually in patients having left ventricular outflow
HEART FAILURE This is also referred to as Congestive heart failure. it is a clinical syndrome which occurs when the heart is unable to pump sufficient amount of blood to meet the metabolic requirement of the tissue for oxygen. It can also result from structural cardiac abnormalities which impair the ability of the ventricle to fill or eject blood. The heart is weakened and cannot pump enough blood as strongly as before this implies that less oxygen is reaching the organs and muscles which can cause tiredness or shortness of breath. Etiology of cardiac failure: • Systemic hypertension-The most common cause in 75% of cases • Changes in the structure of the heart -changes in the valves causes volume and pressure overload • Disease conditions-valvular
Hypertrophic Cardiomyopathy Also known as HCM, Hypertrophic Cardiomyopathy is a cardiac disease that causes the ventricles of the heart to become abnormally thick and stiff. When the ventricles become thick and stiff, it causes them to not be able to pump enough blood, which can cause a blood as well as oxygen deprivation to the rest of the body. HCM can be genetically inherited as well as diseases like diabetes and thyroid diseases can make the odds of HCM contraction higher. HCM can cause sudden death as a result of fatal ventricular arrhythmias. In 1958, the first contemporary account of Hypertrophic Cardiomyopathy was made by Dr. Robert Donald Teare, a pathologist at St. George’s hospital in London.
The damage will cause the walls to harden over time and lose elasticity and increase blood pressure, as well as increase the work load on the heart. (Neighbors) The harden vessel cannot expand and accept the surge of blood that is produced by the heart. Once the inner wall of your artery is damaged from injuries, inflammation or disease; this creates a weak area or tear in the artery walls where the buildup of plaque and other cellular waster products will accumulate at the site and develop into a process called Atherosclerosis. Atherosclerosis is characterized by deposits of fatty or lipid materials in the thickening of the walls. Should this process continue and build up inside the walls of your arteries, it will slow down, or even block the rate of blood flow to your heart muscle.
When the blockage is temporary or partial, angina (chest pain or pressure) may occur. When the blockage completely and suddenly cuts off the flow of blood, the result is myocardial infarction. Congenital defects and spasms of a coronary artery may also block blood flow. There is evidence that infection from organisms such as chlamydia bacteria may be responsible for some cases of coronary artery disease. A number of major contributing factors increase
Everyone may have the same heart condition but everyone has different baselines, comorbidities, different weights, different ages, and different extracurricular activities. extracurricular activities is defined as, smoking, drinking, eating habits etc. So, to be able to look at this and get a mental image of what I’m trying to say is this. If you know all the signs and symptoms and manifestations of heart failure, but you don’t know the patients baselines or medical history, how will you know if they are having a manifestation, sign or symptom, or if this is just normal for them? And that’s what Heart2home is all about.
c.Prior myocardial infarction is the occlusion of a heart vessel leading to tissue oxygen deprivation and heart dysfunction. Recent ischemia, is reduced blood to an area causing it not to receive sufficient oxygen supply and accumulation of toxins Pulmonary embolism, is the blockage of the pulmonary artery which causes pooling of the blood in front of the embolus and little to no blood to flow past. Myocardial hypertrophy. a disease in which a portion of the myocardium is hypertrophic (enlarged) creating functional impairment of the heart 8. The following questions refer to the 12 lead