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Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
Hematuria or haematuria is defined as the presence of blood or red blood cells in the urine. "Gross hematuria" occurs when urine appears red, brown, or tea-colored due to the presence of blood. Hematuria may also be subtle and only detectable with a microscope or laboratory test.
Systemic effects include increased loss of sodium, potassium, and water in the urine, secondary to the drug's effects on the renal tubules, where valuable components of filtered blood are re-absorbed in the kidney. Arterial blood gases may show a mild hyperchloremic metabolic acidosis. Methazolamide is also a carbonic anhydrase inhibitor.
Signs and symptoms. Hematuria (one of the symptoms of Nephritic syndrome. Historically, nephritic syndrome has been characterized by blood in the urine ( hematuria ), high blood pressure ( hypertension ), decreased urine output <400 ml/day ( oliguria ), red blood cell casts, pyuria, and mild to moderate proteinuria.
The symptoms of hemorrhagic cystitis include pain or burning feeling while urinating, frequent need to urinate, loss of control of the bladder, blood or blood clots in the urine, inability to urinate, and fever. Causes. Causes of hemorrhagic cystitis include chemotherapy (e.g. cyclophosphamide, Ifosfamide), radiation, or infection. Ifosfamide ...
Electrolyte imbalance. Diagram of ion concentrations and charge across a semi-permeable cellular membrane. Electrolyte imbalance, or water-electrolyte imbalance, is an abnormality in the concentration of electrolytes in the body. Electrolytes play a vital role in maintaining homeostasis in the body. They help to regulate heart and neurological ...
Percutaneous tibial nerve stimulation ( PTNS ), also referred to as posterior tibial nerve stimulation, is the least invasive form of neuromodulation used to treat overactive bladder (OAB) and the associated symptoms of urinary urgency, urinary frequency and urge incontinence. These urinary symptoms may also occur with interstitial cystitis and ...
Urinary incontinence ( UI ), also known as involuntary urination, is any uncontrolled leakage of urine. It is a common and distressing problem, which may have a large impact on quality of life. [1] It has been identified as an important issue in geriatric health care. [2]
The term acidemia describes the state of low blood pH, when arterial pH falls below 7.35 (except in the fetus – see below) while acidosis is used to describe the processes leading to these states. The use of acidosis for a low pH creates an ambiguity in its meaning. The difference is important where a patient has factors causing both acidosis ...