In nature, methane is produced by the anaerobic bacterial decomposition of vegetable matter under water (where it is sometimes called marsh gas or swamp gas). Wetlands are the major natural source of methane produced in this way.
What are the exams and tests for renal artery stenosis? Blood tests. Screening blood tests may be done as part of the general evaluation of high blood pressure and may include a complete blood count, electrolytes, kidney function tests, and a urinalysis. Imaging. Renal artery narrowing can be detected with ultrasound or computerized tomography angiography or arteriography.
in approximately one third of cases renal artery disease is bilateral about 11 % of renal arteries with stenoses of greater than 60 % progress to total occlusion within 2 years left renal artery stenosis in the past captopril renography was used in the diagnosis of bilateral renal artery stenosiseft renal artery stenosis percutaneous revascularization with techniques such as percutaneous transluminal angioplasty pta a less invasive option in the management of peripheral vascular disease pvd has been furthered by the work of pioneers such as dotter and gruntzig