How would you chart a patient who is lethargic, inattentive, and slow to respond?

Charting a patient who presents as lethargic, inattentive, and slow to respond most accurately corresponds to the term "lethargic." This term reflects a state of drowsiness and decreased alertness where the patient may be easily aroused but tends to drift back to sleep after minimal stimulation.

This description fits well with the observed behaviors of being inattentive and slow to respond, indicating a reduced level of consciousness but not completely unresponsive. Using "lethargic" communicates that the patient's alertness is compromised, and they require further evaluation and monitoring.

The other options describe different levels of consciousness. "Obtunded" generally implies a more profound level of decreased alertness and responsiveness than lethargy, where the patient is difficult to arouse and may need more vigorous stimulation. "Semi-coma" signifies an even more significant reduction in consciousness, indicating that the patient has impaired responses to stimuli. "Delirious" describes a state of confusion and disorientation that would not be the best fit for someone who is simply lethargic without the additional cognitive impairments implied by delirium. Therefore, the term that best captures the patient's condition is "lethargic."