If your cat struggles to breathe, breathes with an open mouth, collapses or suddenly cannot use a limb, contact an emergency vet immediately. Do not delay to obtain a measurement.
For a cat with diagnosed heart disease, home observations can support veterinary care. Ask your team for a written plan covering what to record, how often, when to call and whom to contact out of hours.
Breathing, appetite and activity
Your vet may ask for sleeping respiratory rates. Our breathing-count guide explains the method; use the individual thresholds your vet provides. Note changes in breathing effort as well as the count.
Record changes in appetite, activity and usual behaviour, such as difficulty reaching a favourite resting place. These observations do not identify the cause by themselves. Follow your vet’s instructions about reporting changes rather than waiting for the next routine appointment. See Tufts’ home monitoring guidance.
Weight checks that suit your cat
Ask whether home weighing would help and how often to do it. Use suitable scales with enough capacity and a secure surface, without forcing a distressed cat to stay still. Your practice can demonstrate a safe method or arrange clinic checks. Weight and muscle loss can matter in heart disease; Tufts’ nutrition guidance discusses monitoring weight.
Agree any device use with your vet
Before buying or using a pulse oximeter or another monitor, ask whether that exact device and measurement have a useful role in your cat’s care. Request training, limitations and instructions for unexpected results. Do not force a sensor onto a struggling cat or let a reassuring display override concerning symptoms.
Home measurements do not replace cardiac assessment. Echocardiography is the principal diagnostic test for feline cardiomyopathy; other tests may also be needed. Cornell explains these roles in its cardiomyopathy overview.
Keep one simple record
Use a notebook or phone note for dates, readings, symptoms and prescribed medication changes. Bring it to appointments. If the schedule feels difficult or increases worry, ask your team to simplify it. Do not alter medicines without veterinary instructions.
General owner information. The treating veterinary team should tailor monitoring to your cat.
