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Bundle branch block
Pulseless electrical activity
Atrioventricular nodal reentrant tachycardia (AVNRT)
Premature atrial contraction
Long QT syndrome and Torsade de pointes
Premature ventricular contraction
Coronary steal syndrome
Coarctation of the aorta
Polycystic kidney disease
Renal artery stenosis
Peripheral artery disease
Subclavian steal syndrome
Superior mesenteric artery syndrome
Human herpesvirus 8 (Kaposi sarcoma)
Chronic venous insufficiency
Deep vein thrombosis
Acyanotic congenital heart defects: Pathology review
Aortic dissections and aneurysms: Pathology review
Atherosclerosis and arteriosclerosis: Pathology review
Cardiac and vascular tumors: Pathology review
Cardiomyopathies: Pathology review
Coronary artery disease: Pathology review
Cyanotic congenital heart defects: Pathology review
Dyslipidemias: Pathology review
Endocarditis: Pathology review
Heart blocks: Pathology review
Heart failure: Pathology review
Hypertension: Pathology review
Pericardial disease: Pathology review
Peripheral artery disease: Pathology review
Shock: Pathology review
Supraventricular arrhythmias: Pathology review
Valvular heart disease: Pathology review
Vasculitis: Pathology review
Ventricular arrhythmias: Pathology review
Polycystic kidney disease
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polycystic kidney disease and p. 71
Polycystic kidney disease, or PKD, is a genetic disease in which the kidneys become filled with hundreds of cysts, or fluid-filled sacs, causing them to be larger than normal and to quit functioning over time.
These cysts develop in the outer layer—the cortex, as well as the inner layer—the medulla—of both kidneys.
These cysts, which are lined with renal tubular epithelium, fill up with fluid and get larger and larger over time, making the kidneys much larger than normal.
The blood vessels that feed neighboring healthy nephrons can get compressed by growing cysts, which literally starves them of oxygen.
Now the first type of PKD is autosomal dominant PKD or ADPKD, which used to be called adult PKD, since symptoms usually manifest in adulthood.
The first gene responsible for ADPKD is PKD1, which when mutated causes the more severe and earlier onset variety, and PKD2, which when mutated causes less severe disease and is also later in onset. PKD1 and PKD2 code for the polycystin 1 and polycystin 2 proteins, respectively, which are components of the primary cilium.
Now, the primary cilium is an appendage that sticks out from most cells in the body and receives developmentally important signals.
More specifically, in the nephron, as the urinary filtrate flows by and cause it to bend, polycystin 1 and polycystin 2 respond by allowing calcium influx, which activates pathways in the cell that inhibit cell proliferation.
Polycystic kidney disease or PKD, is a genetic disorder in which the kidneys become filled with hundreds of cysts, causing them to be larger than normal and to fail over time. PKD presents with high blood pressure, headaches, abdominal pain, blood in the urine, and excessive urination. Other symptoms include pain in the back, and cyst formation (renal and other organs). PKD comes in two varieties: autosomal dominant, which presents in adulthood, and autosomal recessive, which presents in infancy or even before birth. Treatment of PKD typically involves medications to control symptoms, lifestyle changes, and in some cases, surgery.
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