You claim that transwomen literally think themselves to be female. That is just as much at odds with reality as my mother's friend who thought he was the son of God.
Do you know that catheters come in male and female versions? Do you know what happens when one designed for women is used for men? Let Nursing Times tell you. Understanding oneself to be female does not magically change one's anatomy.
Nursing Times
As every nurse is likely to insert a urethral catheter at some point, they need to be sure that they are using a catheter of the correct length.
Catheters are commonly used in acute care, in patients’ own homes, in social care and in nursing homes. They are manufactured in a range of different gauges and three lengths: female length (20-26cm), standard length (40-45cm) and paediatric (30-31cm).
The gender difference in urethral lengths means that, should the shorter female length catheter be used in males, the inflation of the balloon with water occurs within the male urethra rather than the bladder. This can cause severe urethral trauma and result in pain and haemorrhage, or longer term effects such as urethral strictures, retention or incontinence.
Clinical practice differs between healthcare settings. Some areas will stock only standard length catheters and use different gauges for male and female patients. In other areas, the use of shorter female length catheters, which have no clinical imperative, are used for patient dignity issues such as concealing catheters under skirts.
Between January 2006 and March 2009, the National Patient Safety Agency received 114 reports of serious harm from errors where shorter female catheters had been inserted in males. The result was a range of serious outcomes for the patients, including cases of acute renal failure or impaired renal function. Some patients required additional medical or surgical procedures to correct the trauma.
In April 2009, the NPSA issued a Rapid Response Report (RRR) on the risks of female catheters causing urethral trauma in men, with the aim of making practice safer.
www.nursingtimes.net/bladder-and-bowel/female-catheters-cause-trauma-in-males-31-05-2010/