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Pigtail catheter is a non-selective catheter with multiple side holes that can deliver large volumes of contrast into a blood vessel for imaging purposes. [29] Cobra catheter is a selective catheter used to catheterise downgoing vessels in the abdomen. Cobra catheters move forward by pushing and are removed by pulling. [30]
The stylet is used to detach the balloon catheter from the pusher. During the healing process urine drains through the wide central lumen while the balloon remains inflated. The ureteric balloon catheter may be used in conjunction with a double J stent for additional drainage. To remove the catheter after several weeks the balloon is deflated ...
During long-term use, the catheter may be left in place all the time, or a patient may be instructed on a procedure for placing a catheter just long enough to empty the bladder and then removing it (known as intermittent self-catheterization). Patients undergoing major surgery are often catheterized and may remain so for some time. The patient ...
Intermittent catheters come in a variety of designs and differ depending on the user's genitals, with a catheter for a penis being longer and a catheter for a vulva being shorter. The catheter is inserted into the urethra by the patient or a carer and can either be directed down a toilet or, if measurement of volume is required, into a ...
It may become necessary to remove or replace it. Vascular occlusion: formation of a blood clot between the catheter and the vascular wall leading to partial or complete occlusion of the vein. The occlusion is cleared by removal of the port if possible. If not, then heparin therapy may clear the occlusion.
Stents with a thread may be removed in a matter of a few seconds by pulling on the thread. This is often done by a nurse, but can be done by the patient. When removing the stent, constant, steady force should be applied, to avoid starting and stopping. Something should also be placed below the patient to catch any urine that leaks during removal.
Condom catheters, also known as male external catheters, urisheaths, or Texas catheters, are made of silicone or latex (depending on the brand/manufacturer) and cover the penis just like a condom but with an opening at the end to allow the connection to the urine bag.
Catheter embolectomy is also used for aspiration embolectomy, where the thrombus is removed by suction rather than pushing with a balloon. [8] It is a rapid and effective way of removing thrombi in thromboembolic occlusions of the limb arteries below the inguinal ligament, [ 8 ] as in leg infarction .