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Clinical Negligence led to an Abdominal Aortic Aneurysm fatality

I have recently been instructed by a family who sadly lost a loved one due to a failure to diagnose and treat a ruptured Abdominal Aortic Aneurysm (AAA).
What is an AAA ?
The Heart pumps blood upwards along the Ascending Aorta, around a curve and then downwards along the Descending Aorta. Where the wall of the Aorta becomes weak it can stretch and weaken (like a balloon inflating) to form an Aneurysm. Pressure from the blood can then burst that wall. This is known as a Ruptured Aortic Aneurysm. The condition is an emergency. If the patient is to survive, the rupture must be diagnosed without delay and repaired by surgeons. Surgery can be very successful but prompt action is key.
More men develop Aortic Aneurysms than women and most are over 40. Warning signs are sudden pain in the Abdomen spreading to the Back, collapse, vomiting, falling blood pressure and a rapid pulse.
Accident and Emergency doctors must be able to recognise the signs, arrange CT or Ultrasound Scans and then refer to surgeons urgently. Provided the Aneurysm can be repaired and the procedure is done quickly, surgery usually saves lives.
Unfortunately Clinical Negligence errors in diagnosis can happen. Doctors may fail to spot the condition, confuse it with something else, fail to do the right investigations or not involve surgeons quickly. Mistakes are catastrophic. A patient who is not properly treated may die within hours.