Final answer:
PEG feeding is used for patients with neurologic diseases or disorders who cannot maintain nutrition orally, and its use is based on individual assessments. Though similar in equipment, PEG placement is not shown in the figure which depicts an endoscopic exam for peptic ulcers.
Step-by-step explanation:
The Percutaneous Endoscopic Gastrostomy (PEG) is a medical procedure often used in patients with neurologic diseases or disorders who have difficulty swallowing or maintaining adequate nutrition orally. The decision to use PEG feeding involves assessing the patient's specific condition, prognosis, and overall clinical picture to determine if enteral feeding will provide benefit and improve quality of life.
Figure 18.7.3 illustrates a similar but different procedure where a doctor uses an endoscope to examine a patient's upper gastrointestinal tract for issues like peptic ulcers. Though the procedure depicted is not PEG placement, it does involve similar equipment such as the endoscope and screen used to view the internal GI tract.
A PEG is generally recommended when a patient with a neurologic disorder, such as advanced Parkinson's disease or after a stroke, requires long-term nutritional support and can no longer safely swallow enough food or liquids. Before proceeding with PEG placement, the patient's prognosis and potential for recovery should be considered, as well as the risks associated with the procedure and the possibility of improving quality of life through PEG feeding.