Student Presentations Flashcards
what is Antiphospholipid syndrome
A disorder in which the immune system attacks healthy proteins in the blood leading to an increased risk of blood clots.
causes of APS
Pregnancy
Infections
Medications such as hydralazine or procainamide
Hormonal changes specifically related to pregnancy and oral contraceptive use
Environmental triggers such as smoking
pathophysiology of APS
Immune system makes an abnormal protein called antiphospholipid antibodies. The antibodies attack the phospholipids and phospholipid-binding proteins which causes damage which leads to formation of blood clots in arteries and veins.
what is disseminated intravascular coagulation (DIC)
Thrombotic disease due to the overactivation of the coagulation cascade. Also called consumption coagulopathy because excessive clotting consumes all the platelets and clotting factors.
Paradoxical condition because clotting and hemorrhage may occur.
causes:
Stroke, Gynecologic complications such partial placenta left following birth, and massive trauma
Cancer: leukemia, colon cancer, and pancreatic carcinoma
Most common cause: Sepsis
risk factors for DIC
○ Pancreatitis
○ Blood Infection
○ Recent surgery or anesthesia
○ Burns
○ Pregnancy complications
○ Liver disease
○ Reaction to blood transfusion
what is factor V Leiden
Factor V Leiden is a genetic mutation of the factor V clotting protein called factor V G1691A, causing hypercoagulation and can possibly result in a VTE (most commonly a DVT or PE).
The mutation that occurs affects the structure of the protein and essentially disables it from accepting any of the anticoagulation proteins (e.g protein C), and so it goes into overdrive and creates too much clotting.
Causes:
genetic/ inherited condition
autosomal dominant genetic condition
Not every person with the mutation will develop the disease
Structures involved: F5 gene, Arg506 cleavage site for protein C, veins (DVT), lungs (PE), placenta (miscarriage)
what is Eisenmenger syndrome
Eisenmenger syndrome is caused by a congenital heart defect that leads to pulmonary hypertension.
The defect is commonly a ventricular septal defect (VSD) but can also be caused by atrial septal defects(ASD), AV canal defect, patent ductus arteriosus, cyanotic heart disease, and other heart defects.
These defects are known for their shunt of blood flow from left to right in the heart caused by a hole in one or more of the walls that separate the chambers of the heart.
In ES, the abnormal blood flow that leaks from the left side of the heart into the right side via shunting causes an increase in pulmonary artery blood flow.
This causes narrowing of the pulmonary artery lumen and increased pulmonary vascular resistance. Eventually, this will cause the shunt to reverse and become bidirectional or purely right to left which leads to oxygenated and deoxygenated blood mixing.
The combination of pulmonary vascular resistance damaging lung microvasculature and mixing of deoxygenated and oxygenated blood results in systemic hypoxemia.
Hypoxemia due to right to left cardiac shunting transition is where the signs/symptoms and clinical presentation manifest themselves into a multisystem presentation.
what is graft vs host disease
Graft vs Host Disease (GVHD) is a complication that can occur after an allogeneic transplant. The graft views the recipient’s cells (host) as a threat and attacks.
Two types of GVHD:
a. Chronic: Can appear any time after transplant but most cases start within two years. Affects skin, mouth, liver, lungs, GI tract, muscles, joints, or genitals.
b. Acute: Occurs shortly after transplant usually within 100 days but symptoms may not show until later. Affects skin, GI tract, or liver.
3 requirements to develop GVHD:
a.Graft must contain immunologically competent cells.
b.The recipient must express tissue antigens not present in the transplant donor.
c.The patient must be incapable of mounting an effective response to eliminate the transplanted cells.
what is hemophilia
Hemophilia is a genetic blood disorders that impairs the body’s ability to control bleeding due to low or absent levels of clotting proteins
types A, B, C
During Platelet formation 10 proteins are responsible in forming a blood clot6. Individuals with hemophilia experience a deficiency in of a specific factor
what is inhalation disease
Inhalation diseases, also known as pneumoconiosis, are lung conditions caused by breathing in dust particles and cause irreversible lung damage
The most common forms of pneumoconiosis are asbestos, silicosis, and coal miners’ lung
There are simple and complicated forms. Simple pneumoconiosis causes a small amount of scar tissue and forms nodules on lung tissue. Complicated pneumoconiosis causes large amounts of scarring (progressive massive fibrosis).
Pathologic process
1.Inhalation of particles – inhaling inorganic dusts leads to permanent deposition in the lungs and can cause cellular damage
2.Macrophage response – activated macrophages attempt to clear the particles and release fibrogenic factors that promote excessive fibrosis/scarring of lung tissue
3.Nodule Formation – fibrotic nodules form over time, leading to progressive lung dysfunction and increased susceptibility to complications like TB and chronic bronchitis
what is lupus
Lupus is an autoimmune disease that targets body tissues and organs. The cause is unknown, but it can be triggered by sunlight, infections, or certain drugs/medication.
what is Marfan’s syndrome
Marfan’s syndrome is a genetic condition that impacts the connective tissue in the body.
Common structures affected include: eyes, heart, skeleton, and blood vessels
The main cause of Marfan’s syndrome includes: a defect in the gene that allows your body to produce a protein (Fibrillin) that gives your body strength and elasticity.
clinical features:
● Slender and tall physical stature
●Disproportionately long arms and legs
●Abnormally long, slender fingers and toes
●Hypermobility
●One to three organ systems
what is metabolic syndrome
Metabolic syndrome is a cluster of metabolic disorders such as central obesity, insulin resistance, hypertension, and dyslipidemia that increase the risk of cardiovascular disease, type 2 diabetes, and stroke.
Other names for metabolic syndrome are: Syndrome X, Insulin resistance syndrome, and Dysmetabolic Syndrome.
what is obstructive sleep apnea
Definition of condition:
Obstructive sleep apnea (OSA) is episodes of complete or partial airway collapse that causes a decrease in oxygen saturation.
Causes:
- The causes of OSA include the pharyngeal narrowing which can be caused by large neck circumference, soft tissue, bone, or vessels. -These structures can lead to increased pressure around the upper airway which can cause insufficient space for airflow to the upper airway during sleep.
Structures involved: pharynx, upper airway, retropalatal area, tonsils, hyoid bone, mandibular bone, upper airway muscles, nose, oropharynx, nasopharynx, hypopharynx, and tongue.
what is polycythemia vera
Polycythemia Vera (PV) is the uncontrolled production of erythrocytes. PV is a myeloproliferative neoplasm of bone marrow stem cells, affecting erythrocyte production1. The primary cause of PV is due to a genetic abnormality. There is a potential for progression to leukemia