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Pathology Test 3
Heart and Blood Diseases
77
Pathology
Graduate
10/27/2009

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Term
What types of cardiac diseases arise from cardiac dysfunction?
Definition
  1. Ischemic heart disease
  2. Mitral and aortic valvular disease
  3. Hypertensive heart disease
  4. Primary (non-ischemic) myocardial disease
Term
What is ischemic heart disease?
Definition
It's a heart disease resulting from myocardial ischemia. CAD or CHD since the cause of damage to the heart uscle is brought about by a disorder in the coronary arteries.
Term
What are the causes of myocardial ischemia in IHD?
Definition
  • reduction in coronary blood flow
  • conditions that increase in cardiac energy demand (hypertrophy)
  • conditions that lower systemic BP (shock)
  • conditions that cause hypoxemia (respiratory problem)
  • rapid HR
Term
What are the consequences of myocardial ischemia in IHD?
Definition
  1. Reduced nutrient supply and inadequate removal of metabolites
  2. Reduced O2 supply
  3. Reduced ATP production and the subsequent cellular damage
Term
What are the causes of obstruction in coronary blood flow?
Definition
Mostly by atherosclerotic plaque (90%)
Term
What are acute changes in plaque morphology that can cause further ischemia?
Definition
  • fissuring
  • overt plaque rupture
  • local platelet aggregation
  • coronary artery thrombosis
Term
Name the primary myocardial diseases.
Definition
  1. Myocarditis
  2. Cardiomyopathies
  3. Systemic disorders
  4. Muscular dystrophies
  5. Immunologic disease
Term
List different types of angina.
Definition
  1. Typical (stable, chronic)
  2. Prizmetal's or variant angina
  3. Unstable Angina Pectoris (crescendo angina)
  4. Infarction angina
Term
What are characteristics of typical angina?
Definition
It is associated with some form of stress. Pain can be relieved by rest or nitroglycerine. Pain is described as crushing or squeezing that may radiate down left arm.
Term
What are characteristics of prinzmetal's or variant angina?
Definition
  • occurs at rest or awakens the pt from sleep.
  • associated with coronary artery spasm near atherosclerotic plaque
  • Relieved by vasodilators
Term
What are characteristics of unstable angina pectoris?
Definition
  • Increased frequency of pain
  • More intense and longer lasting than stable kind.
  • Most serious and potentially irreversible myocardial ischemia
  • Referred to as preinfarction angina
Term
What are characteristics of infarction angina?
Definition
  • severe crushing substernal chest pain (may radiate into neck, jaw, epigastrium, shoulder, or left arm)
  • Pain lasts several hours to days and not relieved by nitroglycerine.
  • Irreversible
Term
List the clinical manifestations or RHF.
Definition

Sign: soft tissue edema ( first in feet and lower legs than generalized), distended neck veins, enlarged liver

Symptom: tender liver, deep venous thrombi (leading to pulmonary embolism)

Term
List the diagnostic tests that strongly indicate that the patient has suffered a MI.
Definition

1. EKG: changes in Q wave, ST segment abnormalities, T wave inversion, presence of arrhythmias.

2. Laboratory evaluation: CK (will see in first 2 days if MI), lactate dehydrogenase, serum levels of myocardial proteins especially troponins (rise)

Term
List the risk factors that may contribute ischemic heart disease.
Definition
Cigarette smoking, elevated total serum cholesterol levels, HTN
Term
Under what circumstances is angioplasty used?
Definition
When there is a narrowing of obstructed blood vessel it is used to widen it. Stenosis.
Term
List the causes of left heart failure.
Definition
IHD, mitral valve and aortic valvular disease, hypertensive heart disease, primary myocardial disease.
Term
What are the consequences of hypertension induced hypertrophy?
Definition
Myocardial ischemic injury.
Term
List the structural changes that occur in myocardial infarctions.
Definition
Necrosis of myocardial tissue. Inflammatory response. Most common in left ventricle.
Term
Name the valvular diseases associated with post inflammatory scarring of theumatic fever.
Definition
  • Mitral stenosis
  • Aortic stenosis
  • Mitral regurgitation
  • Aortic regurgitation
  • Intrinsic valvular disease
Term
List the clinical manifestations of aortic stenosis.
Definition

Signs: Doppler ECG- measures flow velocities as well as structure and can be used to repetitively examine the progression of the disease w/ time

Symptoms: angina, syncope

Term
List the steps involved in the development of LHF by aortic stenosis.
Definition
  1. Valve cusps are thickened and adhere to each other
  2. Obstruction to left ventricular outflow
  3. Gradually increasing Pressure gradient across the calcified valve
  4. Pressure overload
  5. Concentric hypertrophy of the left ventricle.
  6. Cardiac decompensation with CHF
Term
In what heart disease does the valve become incompetent and blood reenters the left atrium during ventricular systole?
Definition
Mitral valve prolapse
Term
What side of the heart can fail in pulmonary HTN? What is the name given to the condition?
Definition
right side of the heart. Cor Pulmonale.
Term
Which congenital heart diseases give rise to right to left shunts?
Definition
  1. Tetralogy of Fallot
  2. Transposition of the great arteries
  3. coarctation of the aorta
  4. truncus arteriosus
  5. tricuspid atresia
  6. obstructive congenital abnormalities
Term
Which congenital heart diseases give rise to left to right shunts?
Definition

1. Atrial septal defects (ASD)

2. Ventricular septal defects (VSD)

3. Patent ductus arteriosus (PDA)

4. Atrial Ventricular septal defect

Term
List the syndromes found in ischemic heart disease. Which is the first to occur in the majority of cases?
Definition
  1. Angina pectoris (occurs first)
  2. Acute MI
  3. Sudden cardiac death
  4. Chronic IHD w/ CHF
Term
What cardiac disease is responsible for 80-90% of cardiac mortality?
Definition
Ischemic Heart Disease
Term
In what heart disease would the heart be hyperkinetic, have abnormal diastolic filling and intermittent outflow obstruction?
Definition
Hypertropic cardiomyopathies
Term
In what heart disease would it result from infection of the heart by coxsackievirus or bacteria that causes lyme disease?
Definition
Myocarditis
Term
In what heart disease would there be a functional loss that would result in decreased or loss of overlap between contractile elements in the cardiac muscle?
Definition
Dilated Cardiomyopathy.
Term
What is the incidence of CHF?
Definition
Older adults. Most common cause of hospitalization in people over 65 years. Many heart attack survivors develop CHF
Term
Describe the structural changes found in ischemic heart disease as well as in various cardiomyopathies.
Definition
Defined area of myocardial necrosis in the ventricles.
Term
List all the conditions that can be involved in the pathogenesis of neutropenia.
Definition

-Accelerated removal of neutrophils from the circulating blood

- Reduced of ineffective production of neutrophils (ineffective granulopoiesis)

- immunologically mediated injury to the neutrophils (produced by exposure to drugs)

Term
Identify various blood conditions that can expose the patient to bacterial and fungal infections?
Definition
Anything that has an effect on WBC. NEUTROPHENIA, Eosinophilia, basophilia, agranuloctis
Term
Identiy the complications that would arise when the body tries to increase hemoglobin synthesis in anemia.
Definition
  1. Erythropoietin synthesis incrases -> marrow expansion (skull)
  2. Increased iron absorption -> iron overload in heart and liver
  3. Tissue anoxia -> fatty change in the liver, myocardium and kidney
Term
List clinical manifestations of anemia that are directly related to efforts made by the cardiovascular and respiratory system to increase the amount of oxygen reaching the tissues.
Definition
Angina (in preexisting heart conditions)- weakness, malaise, easy fatigability, dyspnea on mild exertion, headache, dimness of vision, faintness. Tacchycardia, tacchypnea.
Term
How does myelotoxic agents and ionic radiation cause anemia?
Definition
Cause injury to stem cells
Term
Identify conditions that result in impaired red blood cell synthesis?
Definition
Thalassemia and sickle cell anemia
Term
What are the consequences of long term decrease in number of RBC?
Definition
  1. Nutritional deficiency
  2. Decreased erythropoietin levels (chronic kidney disease)
  3. Suppression of multipotent stem cells
  4. Extensive replacement of marrow by tumors
Term
Define reactive leukocytosis.
Definition
An imflammatory reaction where there is an increase in the number of WBCs accompanied by fever, and signs of infection.
Term
What type of blood disorder results from inadequate levels of vitamin B12?
Definition
Pernicious anemia
Term
List the possible outcomes when bone marrow cells are replaced by tumors or metastic cancer of the breast, lung etc?
Definition
Myelophythisic anemia. It disturbs normal function. An abnormal release of immature precurors into the peripheral blood can occur: Leukoerythroblastosis
Term
List the diseases classified as acute infections of the upper respiratory tract?
Definition
Common cold, acute pharyngitis, acute bacterial epilottis, acute laryngitis.
Term
List the possible clinical consequences of increased pulmonary interstitial fluid, obesity, fibrosis of alveolar.
Definition
Decreased ability to get air out.
Term
What respiratory disease is associated with hyperplastic mucus glands and hypertrophied bronchiolar smooth muscles?
Definition
Asthma
Term
What are the major diffuse obstructive disorders?
Definition
Emphysema, chronic bronchitis, bronchiectasis, and asthma
Term
What is considered a positive clinical respiratory tests for obstructive pulmonary diseases?
Definition
FEV1 is decreased b/c of the limitation of maximal airflow rates during forced expiration. So the FEV1/FVC ratio is decrased.
Term
What would chest radiographs show in ARDS?
Definition
Diffuse alveolar infiltration
Term
What is the easliest common manifestation of chronic restrictive lung disease?
Definition
Alveolitis
Term
What are considered positive clinical respiratory tests for chronic restrictive lung diseases?
Definition
decrease in FVC; proportionate reduction of FEVI so FEV1/FVC ratio NOT REDUCED! Decreased carbon monoxide diffusing capacity, lung volume and compliance
Term
What are complications of chronic restrictive lung disease?
Definition
Secondary pulmonary hypertension and right sided heart failure with cor pulmonale.
Term
List the symptoms of asthma.
Definition
Dyspnea, coughing, wheezing
Term
Which one of the pulmonary obstructive diseases results from structural deficits that don't involve direct complete or partial airway obstruction?
Definition
Emphysema
Term
What disease relates a patient sitting forward with a pinched face and breathes with pursed lips?
Definition
Emphysema
Term
What disease has symptoms that include chronic (persistant) cough and sputum production (worse in the morning and evening than at midday) and may persist indefinetly without proceeding to obstructive disease.
Definition
chronic bronchitis
Term
What disease has early symptoms of an upper respiratory infection of a common cold, progressing to fever, a dry irritating cough, sore throat and later cough becomes more progressive of purulent sputum followed by wheezing?
Definition
Bronchietasis
Term
What diseases clinical manifestation does not appear until all of the functioning pulmonary parenchyma is incapacitated
Definition
Emphysema
Term
What disease has obvious prolonged expiration?
Definition
Emphysema
Term
What disease has dyspnea and coughing?
Definition
Asthma
Term
What disease involves weight loss?
Definition
emphysema
Term
What disease involves clubbing of the fingers?
Definition
Bronchiectasis
Term
List the possible causes of death in most COPD patients.
Definition
  1. Respiratory acidosis and coma
  2. Right sided heart failure
  3. Massive collapse of lungs secondary to pneumothorax
Term
List the possible causes of pulmonary HTN. Which ones are direct causes and which ones are indirect.
Definition

Direct- SLE, tumors, emphysema, COPD and pulmonary fibrosis

Indirect- HD, thromboembolism, genetic predisposition.

Term
List the conditions that will most likely cause a reduction in the oxygen diffusion capacity of the respiratory membrane?
Definition
Obstructive lung diseases. There is a decrease in FEV1 so it decreases the ratio.
Term
What is the functional endpoint or obstructive lung diseases?
Definition
The inability to get air. Complete or partial obstruction at any level of the airways.
Term
List the possible structural changes in the respiratory system of a pt that will explain a patient's complaints of SOB, weakness and fatigue results.
Definition
  • blockage
  • decreased space
  • decreased recoil ability of the lungs- can't get O2, become weak, become tired.
Term
If a pulmonary function tests shows diminished TLC, decreased diffusing capacity, mildly decreased forced expiratory volume at 1 sec (FEV1), what pulmonary disease would this patient be possibly suffering from?
Definition
Chronic restrictive lung disease.
Term
List the characteristics (s/s) of Acute Respiratory Distress Syndrome?
Definition
  • Profound dyspnea and tachypnea,
  • respiratory insufficiency
  • cyanosis and arterial hypoxemia increases
  • Respiratory failure
Term
What are the causes of ARDS?
Definition
  1. Diffuse damage to the alveolar capillary walls
  2. followed by Relatively nonspecific, often predictable series of morphological and physiological changes leading to resp. failure
Term
What diseasesĀ are associated with lesions of the upper respiratory tract?
Definition
  • Acute infections
  • Nasopharygeal carcinoma
  • Laryngeal tumors (non malignance, carcinoma of the larynx)
Term
Name the diseases associated with restrictive lung disease.
Definition

Acute- ARDS

Chronic-

  1. Diffuse alveolar damage,
  2. idiopathic pulmonary fibrosis,
  3. hypersensitivity pneumonitis,
  4. sarcoidosis,
  5. diffuse pulmonary hemorrhage syndrome
Term
What areĀ the vascular lung diseases?
Definition
  1. Pulmonary HTN
  2. Vascular sclerosis
  3. Pulmonary thromboembolism (hemmorhage, infarction)
Term
What are the pulmonary infections (of the lungs)?
Definition
Acute bacterial infections
Term
Under what circumstances will community- acquire acute pneumonia be brought about?
Definition
It often follows upper respiratory tract viral infection
Term
How does community-acquired atypical pneumonia (nosocomical pneumonia) come about?
Definition
In the course of a hospital stay.
Term
List the extrapulmonary disorders that result in reduced expansion of the lung parenchyma.
Definition
Poliomyelitis, severe obesity, pleural diseases nad kyphoscoliosis
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