Dental Articles - Exceptions Flashcards
Not a risk factor for atherosclerosis
Alcoholism
Doesn’t characterize chlamydial infection
Ability of the Chlamydiae to survive in the host extracellularly… CANNOT.
Thrombophlebitis
clots (thrombi) formed within veins, esp. deep leg veins
Esophageal varices
causes severe bleeding
Endarteritis
inflammation of the lining of arteries
Lymphangitis
inflammation of the lining of lymph vessels
Buergers disease
involves immune complexes causing damage to arteries and other vessels – often causes thrombosis in legs
Bronchiectasis
abnormal dilatation of the bronchi following chronic infection; not precancerous
Bronchial asthma
narrowing of the bronchi and excess mucus production causing difficulty in breathing; not precancerous
Bronchial carcinoids
benign lesions of neuroendocrine argentaffin cells of bronchial mucosa
Pulmonary emphysema
involves distention of air spaces with destruction of alveoli; not precancerous
Streptococcus pneumoniae
1 cause of meningitis in elderly
Cause meningitis
Neisseria meningitidis Streptococcus pneumoniae (elderly)
Streptococcus faecalis
causes urinary tract infections in hospitalized patients; rare cause of subacute endocarditis; part of the normal fecal flora
Streptococcus pyogenes (Group A, B-Hemolytic)
obligate human parasite spread person-to-person by respiratory secretion via droplets, direct contact with the skin, or fomites; clinical manifestations (suppurative or nonsuppurative = pus produced) — predominantly involving pharyngitis and various skin infections
Mycoplasma hominis
sexually transmitted agent; major source of infection in postpartum women
Leptospira pomona
caused by ingestion or contact through broken skin or mucous membranes with water contaminated by urine from infected reservoirs (dogs, sheep, goats cattle, horses, & rats)
Actinomyces israelii
part of the normal oral flora and are usually pathogenic only after oral trauma
Typically presents with watery [“rice water”] diarrhea (20 liters/day) with the loss of Na+, Cl-, K+, and bicarbonate (HCO3). Clinical manifestations: Nausea, vomiting, abdominal cramps, metabolic acidosis and hypovolemic shock.
Vibrio
Protozoa, thus cannot specifically cause bacillary dysentery. Clinically, the disease may be mild with diarrhea, abdominal cramps nausea, vomiting, and flatulence.
Entamoeba
Inflammatory diarrhea with fever and variable septicemia. In contrast to Shigella, a large
inoculum (> 1 million cells) is needed to survive gastric acid and cause disease. LESS likely a cause than Shigella.
Salmonella
“Traveler’s diarrhea”; >100 serotypes; causes non-inflammatory, secretory diarrhea SIMILAR to Vibrio, but less severe.
Escherichieae
Presents clinically as aseptic meningitis, fever, rash, enteritis, common colds and/or acute hemorrhagic conjunctivitis. Less common symptoms include paralysis, pleurodynia, encephalitis, myocarditis, and respiratory illness.
Echovirus
Most commonly associated with the common cold. Clinical manifestations: upper respiratory tract irritation, headache, nasal discharge, cough, malaise, chills, and myalgia.
Rhinovirus
May cause herpangina, with headache, sore throat, dysphasia, stiff neck, fever, anorexia, and abdominal pain. Discrete vesicles are seen in the oropharynx; cause meningitis; etiologic agent of hand-foot-and-mouth disease
Coxsackievirus Type A
May cause myocarditis, pericarditis, and pleurodynia; cause meningitis
Coxsackievirus Type B
Elicits a mononucleosis illness including fatigue, malaise, tender lymphadenopathy, pharyngitis, fever, headache, and splenomegaly. The majority of these infections are subclinical (with no overt symptoms) but may lead to life-long latent infection; In immunosuppressed patients infection is more severe and marked by fever, adenopathy, leukopenia, hepatosplenomegaly, and myalgias.
Cytomegalovirus
Juvenile periodontitis
Primary pathogen: Actinobacillus actinomycetemcomitans (AA)
Site predilection: incisors and first molars
Absence of plaque and calculus
Very fast in progression
Associated with calculus, plaque, inflammation
Pathogens (anaerobic organisms within the periodontal pocket):
- Bacteroides
- Fusobacteria
- Porphyromonas
- Prevotella
Adult chronic periodontitis
- Hypoperfusion of the kidney and brain
- Chronic passive congestion of the lungs
Signs of LEFT-sided ventricular cardiac failure
- Edema of ankles
- General systemic VENOUS congestion (fluid back- up, rather than pulmonary)
- Ascites = edematous swelling of the abdomen
Signs of RIGHT-sided ventricular cardiac failure
Single, benign, most common tumor
Fibroadenoma
Generally a solitary lesion within a duct or cyst; benign when single
Intraductal papilloma
Tumor in adrenal medulla which produces catecholamines (epinephrine and norepinephrine) – may result in severe hypertension
Pheochromocytoma
Involves limited motion of the mitral valve and causes chronic heart dysfunction.
Mitral stenosis
Heart pain caused by poor blood flow in the coronary arteries; does not usually lead to sudden cardiac arrest.
Angina pectoris
Involves the growth of fibrous tissue in the pericardium, causing decreased ventricular filling, but the condition is not acute.
Constrictive pericarditis
Involves infection of heart valves by bacteria (usually streptococci) Results may include valve damage, myocardial abscess, and septic emboli. However, it does not involve sudden cardiac arrest.
Subacute bacterial endocarditis
A malignant tumor of chondroblasts, found mostly in adults 30-60, male more often than female.
Chondrosarcoma
Most common type is found in glandular elements of the respiratory tract, especially in male adult smokers between 40-70 years old
Adenocarcinoma
Neoplasm of plasma cells resulting in excessive abnormal immunoglobulins, including Bence-Jones proteins; most common in adults 50-60 years old
Multiple myeloma
Malignant skin neoplasms most common in middle aged and older adults
Basal cell carcinomas
Active infection by Mycobacterium tuberculosis with accompanying fever, anorexia, necrosis of lung tissue and destruction of blood vessels in lung parenchyma; blood in sputum
Tuberculosis
Infection is present which can erode surrounding blood vessels; blood in sputum
Lobar pneumonia
Thrombus, most likely from a leg vein, becomes lodged in the lung. If the embolus becomes infected (septic embolus), then can erode surrounding blood vessels; blood in sputum
Pulmonary embolism
Can cause bleeding as it expands into nearby vascular tissue; blood in sputum
Bronchogenic carcinoma
Most common cause of bacterial pneumonia; also causes otitis media, sinusitis, bronchitis, and bacteremia; most common cause of meningitis in the elderly
Alpha-hemolytic streptococci
Causes skin infections (cellulitis) deep infections (bone), systemic infections secondary to deep infections, and toxin mediated disease (toxic shock syndrome).
Staphylococcus aureus