Medical devices with rapid sensor recovery

An ambulatory medical device comprising:

• a plurality of therapy electrodes configured to couple externally to a skin of a patient at opposite ends of a current path through a heart of the patient and to provide one or more therapeutic stimulation pulses to a heart of the patient via the current path during execution of a treatment protocol;
• at least two first sensing electrodes distinct from the plurality of therapy electrodes and configured to couple externally to the skin of the patient and to acquire first electrocardiogram (ECG) signals from the heart of the patient, each sensing electrode of the at least two first sensing electrodes having a first recovery time, the first ECG signals being indicative of an arrhythmia condition of the patient;
• at least two second sensing electrodes distinct from the plurality of therapy electrodes and from the at least two first sensing electrodes, the at least two sensing electrodes being configured to couple externally to the skin of the patient and to acquire second ECG signals from the heart of the patient during execution of the treatment protocol, each sensing electrode of the at least two second sensing electrodes having a second recovery time that is less than the first recovery time, the second ECG signals being indicative of a reaction of the heart to the one or more therapeutic stimulation pulses, the at least two second sensing electrodes being positioned on a line orthogonal to the current path;
• and
• at least one processor coupled to the plurality of therapy electrodes, the at least two first sensing electrodes, and the at least two second sensing electrodes and configured to detect the arrhythmia condition via the first ECG signals, to execute the treatment protocol in response to detection of the arrhythmia condition, and to detect the reaction of the heart to the one or more therapeutic stimulation pulses via the second ECG signals.