Diabetic ketoacidosis

Diabetic ketoacidosis is a medical emergency in which the body breaks down fats and ketones reach toxic levels in the blood. In Jenny Hammond’s case, David Hunter recognizes the condition after she has been without insulin for two full days. The episode turns her need for rescue into an immediate medical crisis: she may be approaching a coma, and without stabilization she could die.

Recognition and Immediate Danger

When Jenny opens her eyes and whispers David’s name, he identifies the sweet chemical odor of her breath as a sign of ketoacidosis. The odor gives clinical meaning to a moment of relief: she is conscious, but her condition remains dangerous and she needs insulin quickly.

David drives as fast as he dares, but the nearest hospital is too far away to risk reaching in her condition. He also knows that he had previously had the insulin in his hands at the surgery, a fact that sharpens his distress as he considers the limited options available. He fears Jenny may already be slipping toward a coma and understands that delay could be fatal.

Continuing Signs and Deterioration

At a later point, David finds Jenny still breathing, but pale and cold. The odor associated with ketoacidosis remains, confirming that the danger has not passed. His relief that she is alive is immediately qualified by the urgency of her need for care.

When David returns to the Land Rover, Jenny is lying where he left her. Her breathing has worsened: it is wheezing, uneven, and unusually rapid. These continuing signs show that her condition is deteriorating, while the evidence does not establish her eventual medical outcome.