Treatment is determined by the severity of symptoms and indicators of acute illness, the presence of underlying lung disease, the estimated size of the pneumothorax on X-ray, and – in some instances – on the personal preference of the person involved.In traumatic pneumothorax, chest tubes are usually inserted. If mechanical ventilation is required, the risk of tension pneumothorax is greatly increased and the insertion of a chest tube is mandatory. Any open chest wound should be covered with an airtight seal, as it carries a high risk of leading to tension pneumothorax. Ideally, a dressing called the "Asherman seal" should be utilized, as it appears to be more effective than a standard "three-sided" dressing. The Asherman seal is a specially designed device that adheres to the chest wall and, through a valve-like mechanism, allows air to escape but not to enter the chest.Tension pneumothorax is usually treated with urgent needle decompression. This may be required before transport to the hospital, and can be performed by an emergency medical technician or other trained professional. The needle or cannula is left in place until a chest tube can be inserted. Critical care teams are able to incise the chest to create a larger conduit as performed when placing a chest drain, but without inserting the chest tube. This is called a simple thoracostomy. If tension pneumothorax leads to cardiac arrest, needle decompression or simple thoracostomy is performed as part of resuscitation as it may restore cardiac output.
Microhematuria, also called microscopic hematuria (both usually abbreviated as MH), is a medical condition in which urine contains small amounts of blood; the blood quantity is too low to change the color of the urine (otherwise, it is known as gross hematuria). While not dangerous in itself, it may be a symptom of kidney disease, such as IgA nephropathy or Sickle cell trait, which should be monitored by a doctor. The American Urological Association (AUA) recommends a definition of microscopic hematuria as three or more red blood cells per high-power microscopic field in urinary sediment from two of three properly collected urinalysis specimens.Microhematuria is usually asymptomatic, and there are medical guidelines on how to handle asymptomatic microhematuria (AMH) so as to avoid problems such as overtreatment or misdiagnosis. See also
Proteinuria
Hematuria
Myoglobinuria
Hemoglobinuria

References
External links
Cohen RA, Brown RS (2003). "Clinical practice. Microscopic hematuria". N. Engl. J. Med. 348 (23): 2330–8. doi:10.1056/NEJMcp012694. PMID 12788998. 2012 AUA Guidelines [1]