Inflammatory Heart Disease
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1 Inflammatory Heart Disease
2 Pericarditis inflammation of the pericardium Causes: may result from bacterial, viral or fungal infection can be assoc. w/ systemic diseases such as autoimmune disorders, rheumatic fever, tuberculosis, cancer, leukemia, kidney failure, HIV infection, AIDS, and hypothyroidism Heart attack (post-mi pericarditis) and myocarditis radiation therapy to the chest and medications that suppress the immune system injury (including surgery) or trauma to the chest, esophagus, or heart.
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4 Pericarditis
5 Pathophysiology
6 Acute Pericarditis result to exudate formation (if severe, can lead to cardiac tamponade) Chronic Pericarditis result to fibrosing (hardening) of the pericardial sac - the thick fibrous pericardium tightens around the heart and efficiency as a pump (Constrictive Pericarditis)
7 Clinical Manifestations Pericardial friction rub Severe precordial chest pain caused by the inflamed pericardium rubbing against the heart Usually relieved by sitting up and leaning forward Pleuritis type: a sharp, stabbing pain May radiate to the neck, left shoulder & arm, back or abdomen Often intensify with deep breathing and lying flat, and may with coughing and swallowing Breathing difficulty when lying down Need to bend over or hold the chest while breathing Dry cough Ankle, feet and leg swelling (occasionally) Anxiety muffled or heart sounds Fatigue if severe- rales, breath sounds Fever
8 Diagnostic tests Chest x-ray Echocardiogram Chest MRI or CT scan show enlargement of the heart from fluid collection in the pericardium, and signs of inflammation. They may also show scarring and contracture of the pericardium (constrictive pericarditis) ECG is abnormal in 90% of pts. w/ acute pericarditis. may mimic the ECG changes of MI. To rule out heart attack, serial cardiac marker levels (CK -MB and troponin I) may be ordered Blood culture CBC, may show increased WBC count Pericardiocentesis, with chemical analysis and pericardial fluid Culture
9 Constrictive Pericarditis a chronic form of pericarditis in w/c the pericardium is rigid, thickened, scarred, and less elastic than normal The pericardium cannot stretch as the heart beats, which prevents the chambers of the heart from filling w/ blood CO & blood backs up behind the heart
10 symptoms of heart failure The inflamed pericardium may cause pain when it rubs against the heart.
11 Causes: most common causes are conditions that induce chronic inflammation of the pericardium: tuberculosis, radiation therapy to the chest, and cardiac surgery. may also result from mesothelioma (a tumor) of the pericardium incomplete drainage of abnormal fluid accumulating in the pericardial sac, which can occur in purulent pericarditis or in post-surgery hemopericardium(bleeding w/in the pericardial sac). S/Sx: dyspnea that develops slowly and progressively worsens Fatigue, excessive tiredness - CO Weakness weak heart sounds distended neck veins chronic swelling (edema) of the legs, ankles hepatomegaly, ascites
12 Interventions identify the cause, if possible analgesics for pain, anti-pyretics, anti-inflammatory drugs(nsaids) such as aspirin and ibuprofen, in some cases, corticosteroids may be prescribed Diuretics- to remove excess fluid Pericardiocentesis - using a 2D-echo-guided needle aspiration or surgically in a minor procedure Antibiotics or antifungal agents(can be instilled directly to the sac) Bed rest, proper positioning, low-na+ diet If the pericarditis is chronic, recurrent, or causes constrictive pericarditis, cutting or removing part of the pericardium may be recommended (Pericardiectomy)
13 Cardiac Tamponade compression of the heart caused by blood or fluid accumulation in the space between the myocardium and the pericardium prevents the ventricles from expanding fully, so they cannot adequately fill or pump blood CO & signs of CHF
14 Causes: Pericarditis caused by bacterial or viral infections Heart surgery dissecting aortic aneurysm (thoracic) wounds to the heart end-stage lung cancer acute MI Other potential causes: heart tumors, kidney failure, recent heart attack, recent open heart surgery, recent invasive heart procedures,
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16 Clinical Manifestations weak or absent PMI & peripheral pulses distended neck veins muffled or decreased heart sounds BP, narrowing pulse presure pulsus paradoxus (BP falls when pt. inhales deeply) Anxiety, restlessness, tachycardia, dyspnea, RR, palpitations Fainting, light-headedness, pallor or cyanosis Chest pain- sharp, stabbing, worsened by deep breathing or coughing signs of CHF CXR, Echocardiogram pericardial effusion
17 Interventions an Emergency condition! Goal: save the patient's life, improve heart function, relieve symptoms, and treat the tamponade Pericardiocentesis (to drain the fluid around the heart) or by cutting & removing part of the pericardium (pericardiectomy or pericardial window). IV Fluids- to maintain normal blood pressure Dopamine, dobutamine - BP Oxygen therapy - workload on the heart Identify and treat cause of tamponade give antibiotics or surgical repair of injury.
18 Myocarditis inflammatory disease of the myocardium that causes infiltration and injury to myocardial tissue Causes: infectious process viral, bacterial, parasitic infection - invasion of myocardial tissue by organisms or production of toxins (Ex. polio, influenza, rubella) autoimmune reaction rheumatic fever cardiac damage is char. by thrombus formation, dilation of ventricles, scarring (fibrosis), hypertrophy, disintegration of cardiac muscle cells heart muscles weaken signs of heart failure
19 S/Sx: fever, tachycardia, abnormal heart beats abnormal heart sounds (murmurs, extra heart sounds) pericardial friction rub chest pain fatigue, shortness of breath, orthopnea fainting often related to arrhythmias peripheral edema other signs suggestive of infection: rashes, sore throat, itchy eyes, swollen joints
20 Interventions: bed rest, low Na+ diet cardiac workload, promote healing Digitalis (digoxin) myocardial contractility, HR, to prevent heart failure Diuretics to control pulmonary or systemic congestion Antibiotics, anti-inflammatory drugs, steroids Bacterial Endocarditis infection of the inner lining of the heart (endocardium) caused by direct invasion of bacteria or other organisms leading to deformity of the valve leaflets
21 Causative agents: Streptococcus viridans (found in the mouth) - 50% of cases, Staphylococcus aureus and enterococcus. Less common organisms include pseudomonas, serratia, and candida. Classification: 1. Acute bacterial endocarditis rapidly progressing infection high fever, murmurs, spleenomegaly, emboli formation follows a rapid course and may severely damage the endocardium early in the disease 2. Subacute bacterial endocarditis slower progressing infection fever, wt. loss, fatigue, joint pains, headache, malaise
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23 Predisposing factors: Who are at risk? congenital heart defects damaged valves by rheumatic fever, atherosclerosis artificial heart valves may occur after cardiac surgery, invasive procedures (dental procedures, catheterization, prolonged IV therapy) minor surgery, gynecologic examinations, dialysis may follow after acute infection of the tonsils, gums, teeth, skin, lungs, GIT, GUT immunocompromised patients drug abusers (injections)
24 Pathophysiology
25 Clinical Manifestations Infection fever, chills, night sweats, malaise, fatigue, anorexia wt. loss, muscle aches, joint pains Cardiac murmurs (valve dysfunction), tachycardia - advanced signs of CHF Peripheral Manifestations: Petechiae small pinpoint hemorrhages in the conjunctiva, mucous membranes, neck, ankles Splinter hemorrhages - small, dark lines under the fingernails Osler s nodes (red, painful nodes with a white center on the pads of fingers, toes, palms or soles) a late sign of infection Janeway lesions (flat, painless, red to bluish-red spots on the palms and soles) an early sign of endocardial infection Roth s spots ( boat shaped retinal hemorrhages near the optic disc seen in fundoscopy
26 Janeway lesions
27 Clinical Manifestations (cont.) enlarged spleen continuous antigenic process Embolic manifestations Lung hemoptypis, chest pain, shortness of breath Kidney hematuria Heart myocardial infarction Brain sudden blindness, paralysis, meningitis, brain abscess
28 Complications: CHF - most common, due to damage to the aortic, mitral valve Embolic episodes ischemia and necrosis of organs arrhythmias atrial fibrillation Glomerulonephritis Stroke
29 Diagnostic tests blood cultures & sensitivity to identify organism best test for detection - obtain sample just before & during height of fever 2D Echo valvular vegetations CBC high ESR, high WBC, anemia ECG
30 Prevention: Prophylactic antibiotics are often given to people with predisposing heart conditions before dental procedures or surgeries involving the respiratory, urinary, or intestinal tract Continued medical follow-up is advised for people with a history of endocarditis
31 Medical Interventions 1. Identify the infectious organism - serial blood cultures 2. Destroy the infectious org., stop the growth of valvular vegetations IV Antibiotics 4-6 weeks (Penicillin, Aminoglycosides) - to ensure high blood levels of medication - to eradicate the bacteria from the chambers & valves repeated blood cultures are done to assess effectiveness of the drug 3. Surgical repair of valvular deformities and congenital defects 4. Provide nutritional supplementation & bed rest 5. Prevent relapse and recurrent fever & infection - good oral hygiene, avoid invasive procedures as possible prophylactic antibiotic therapy, aseptic technique
32 Nursing Interventions Provide comfort measures, fever encourage adequate fluids & nutrition CBR if w/ signs of valve dysfunctions (murmurs) assess for signs of heart failure, tachycardia, embolic manifestation provide health teachings: cause of infection, prolonged use of antibiotic, prophylactic antibiotics, preventing recurrence of infection (good oral hygiene), monitor signs of recurrence
33 Rheumatic Fever an acute or chronic systemic inflammatory process, characterized by attacks of high fever, polyarthritis, severe carditis (valvular damage) Predisposing Factors: Age years old, can also affect elderly socioeconomic factors Poor persons living in crowded, urban areas (slum areas) are more susceptible due to malnutrition, greater exposure to bacterial infections, less money for medical care and medications Genetic
34 Etiology: Group A Beta Hemolytic Streptococci the body undergoes an allergic response to invading streptococci the host develops an autoimmune response in w/c the streptococcal antibodies attack host tissue follows after an URTI by group A beta- hemolytic strep. after 18 days, only 2-3 percent develops rheumatic fever Pathophysiology: a diffuse, proliferative & exudative inflammatory process that affects connective tissues in organs through the body ( heart, joints, nervous system, respiratory system) produces permanent & severe heart damage if valves are Involved
35 Rheumatic Heart Disease (RHD) can develop during 1st 2nd week may involve one or all of the layers of the heart myocarditis temporary loss of contractile power of the heart pericarditis pericardial friction rub endocarditis inflammation, ulceration, erosion of valve leaflets Progressive fibrosis (hardening) scarring calcification of valve leaflets valve stenosis & insufficiency/regurgitation
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37 Clinical Manifestations Polyarthritis joint swelling, tenderness, redness, limited movement & pain ( fingers, knees, ankles) Carditis tachycardia, murmurs, muffled heart sounds, pericardial friction rub, precordial pain, cardiomegaly, signs of CHF fever subcutaneous nodules small, painless, firm nodules (knees,knuckles, elbows) erythema marginatum non-pruritic rash, macules on the trunk and inner aspect of extremities, macules join together looks like chicken wire appearance on skin Chorea (Sydenham s Chorea, St. Vitus Dance) nervous disorder, involuntary grimacing and jerky, purposeless movements, late stage of the disease
38 Clinical Manifestations (cont.) Abdominal pain engorgement of liver Minor Manifestation malaise, weakness, wt. loss, anorexia epistaxis, ESR, WBC Evidence of streptococcal infection: - (+) ASO- antistreptococcal antibodies titer in the blood - (+) throat culture of Group A streptococcus a person is diagnosed w/ rheumatic fever if he meets 2 major criteria or 1 major and 2 minor criteria, as well as having evidence of a recent streptococcal infection Clinical Manifestations (cont.)
39 Management Goals: 2.Suppression of acute inflammatory process steroids, aspirin for fever and joint pain 3.Eradication of the streptococcal infection antibiotics (Penicillin/ Erythromycin) 4.Prevention of disease occurrence 5.To protect the heart against damaging effects of carditis
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