यदि यह पाया जाता है कि एक इंड्वेलिंग यूरिनरी कैथेटर बाधित (अवरुद्ध) हो गया है, तो नर्स की सही और सबसे सुरक्षित प्रतिक्रिया क्या होनी चाहिए?

Which of the following best describes a closed urinary drainage system?

A nurse observes urine backflow during catheterization. What should be avoided to prevent this?

What is the appropriate method of cleaning the insertion site prior to catheterization?