Publicidad

Aneurysm

Staff nurse en Oxford University hospitals
6 de Jan de 2018
Publicidad

Más contenido relacionado

Publicidad
Publicidad

Aneurysm

  1. According to American heart association an aneurysm occurs when part of an artery wall weakness, allowing it to widen abnormally or balloon out. An aneurysm is a localized sac or dilation formed at a weak point in the wall of the aorta Because of the high pressure in the arterial system, aneurysms can enlarge, producing complications by compressing surrounding structures Aneurysm is the second most frequent disease of the aorta after atherosclerosis
  2. CLASSIFICATION CAN BE BASED ON True aneurysm False aneurysm Saccular aneurysm Fusiform aneurysm Berry aneurysm Secondary to atherosclerotic, Syphilis.
  3. THE LAYERS OF VESSEL WALL INVOLVED TRUE ANEURYSM  PSEUDO ANEURYSM
  4. MORPHOLOGICAL FEATURES ( SHAPE AND SIZE OF ANEURYSM) SACCULAR ANEURYSM They are spherical in shape and involve only a portion of the vessel wall, they very in size and are often filled either partially or fully by a thrombus. FUSIFORM ANEURYSM A localized dilation of an artery in which the entire circumference of the vessel is distended. The result is an elongated, tubular, or spindle like swelling.
  5. BERRY ANEURYSM A berry aneurysm, which looks like a berry on a narrow stem, is the most common type of brain aneurysm. They make up 90 percent of all brain aneurysms, according to Stanford Health Care. Berry aneurysms tend to appear at the base of the brain where the major blood vessels meet, also known as the Circle of Willis. When a berry aneurysm ruptures, blood from the artery moves into the brain causing subarachnoid haemorrhage.
  6.  The aneurysm ruptures it can lead to haemorrhage stroke.  A raptured aneurysm quickly become life threatening and requires prompt medical treatment.  According to the meta analysis done by Boogaarts ‘etal’ in the year 2015 they found that aneurysmal rupture prior to treatment is a major cause of death and morbidity in aneurysmal subarachnoid haemorrhage. They also found that aneurysm size is an important risk factor for aneurysmal bleeding.
  7. ATHEROSCLEROTIC ANEURYSM  Atherosclerotic Aneurysms are aneurysms caused by atherosclerosis and typically occur in the abdominal aorta.  Inflammation associated with atherosclerosis leads to destruction, thinning and thus weakening of vascular wall, specifically the tunica media, which leads to aneurysmal dilation of the vessel.
  8. SYPHILITIC ANEURYSM  Syphilitic Aneurysms arise during tertiary syphilis due to chronic inflammation in the tunica adventitia of large elastic arteries, particularly the aorta. Ischemia of the tunica media, combined with further syphilitic invasion into the tunica media itself, results in medial destruction and weakening, ultimately causing dilation and aneurysm- formation.
  9. AORTIC ANEURYSM
  10. THORACIC AORTIC ANEURYSM  It is primarily in the thorax.  It is the ballooning of the upper aspect of aorta, above the diaphragm.  The principal causes of death due to thoracic aneurysmal disease are dissection and rupture.  Once rupture occurs the mortality rate is 50 to 80%.
  11. COMPLICATION OF THORACIC ANEURYSM
  12. SIGNS AND SYMPTOMS OF TAA  Compression of Superior venacava may produce congestion of head, neck and upper extremities.  Pulse and BP differences  Chest pain  Abnormal pulsation apparent on chest  Shortness of breath  Cough  Hoarseness  Dysphagia
  13. ABDOMINAL AORTIC ANEURYSM Vast majority of aneurysm are asymptomatic unless raptured. Rupture may result in pain in the abdomen or back, low blood pressure and often result in death.
  14. COMMON CAUSES FOR ANEURYSM ETIOLOGY/ RISK FACTORS  Atherosclerosis may contribute to weakening of blood vessel  Infection which affect the arterial wall  Syphilis  Marfan syndrome  Penetrating or blunt trauma  High blood pressure it may enlarge or weaken the blood vessel  Older age(greater than 60)  Male sex  Smoking  Family history of aneurysmal disease
  15. GENERAL PATHOPHYSIOLOGY
  16. DIAGNOSIS
  17. PHYSICAL EXAMINATION
  18. MANAGEMENT OF ANEURYSM
  19. INDICATION OF SURGERY FOR AORTIC ANEURYSM
  20. ENDO VASCULAR GRAFT PROCEDURE  It is an alternative to conventional surgical repair of AAA.  This techniques involves the placement of a suture less aortic graft into the abdominal aorta inside the aneurysm via femoral artery cut down  After the graft is delivered to the predetermined point , the graft is pressed or implanted against the vessel wall by balloon inflation  The blood then flows through the vascular graft, thus preventing the expansion of the aneurysm due to pressure, and the aneurysmal wall begin to shrink over time because the blood is now being diverted through the endograft.
  21. OPEN SURGICAL REPAIR – Longer Recovery Time Longer Hospital Stay – 90% Long Term Success – Younger patients typically. EVAR – Shorter length of stay – Reduction in blood loss – ICU utilization reduced – Reduce morbidity/mortality rate – Older patients typically – Needs long-term follow-up – May need secondary procedures for end leaks.
  22. BENEFIT V/S COMPLICATIONS OF ENDOVASCULAR REPAIR BENEFITS COMPLICATIONS
  23. SURGICAL MANAGEMENT
  24. CLIPPING THE ANEURYSM
  25. WRAPPING THE ANEURYSM .
  26. COILING OF ANEURYSM A catheter is introduced in to the femoral artery and threaded up to the cerebral blood vessel Platinum coils attached to a thin wire are inserted into the catheter and then placed in the aneurysm until the aneurysm is filled with the coil. So it packing prevents the blood from circulating through the aneurysm and reduce the risk of rupture.
  27. NURSING DIAGNOSIS AND INTERVENTION Monitor vital signs, Obtain information regarding back or abdominal pain Explain all procedures in simple words Reduce unnecessary external stimuli Instruct the patient not to lift any heavy objects(beyond 2.5 kg) for about 6 to 12 weeks after surgery . Teach the client about the importance of wound care.
  28. CONCLUSION
  29. BIBLIOGRAPHY
Publicidad