How do endoscopy and catheterisation differ?
Endoscopy uses a viewing instrument to examine an organ and sometimes take samples or provide treatment. A catheter drains fluid, delivers substances or instruments, or takes measurements. Not every catheter enters a blood vessel; urinary and cardiac catheters serve different purposes.
Details
Examples make the difference clearer
A gastroscope allows the clinician to examine the oesophagus and stomach and potentially take a biopsy. A urinary catheter drains the bladder. During cardiac catheterisation, a tube passes through a blood vessel for heart assessment or a planned intervention.
Does diagnosis automatically include treatment?
Some procedures are diagnostic, while others allow treatment during the same session. The words endoscopy or catheterisation alone do not tell you how extensive a procedure is or whether general anaesthesia or an overnight stay is needed. The organ, purpose and patient’s condition determine those details.
Before giving consent
Ask for the complete procedure name, its purpose, alternatives, risks and preparation. Tell the team about blood thinners, allergies and chronic conditions. Follow the fasting and medicine instructions for your specific procedure rather than borrowing instructions intended for a different one.
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