Inspector Poirot is one special kitten. Trapped with his siblings during a TNR project, all seemed well until a vet visit revealed a grade 6 (out of 6!) heart murmur. A murmur like that on a creature so small is a dire sign. An emergency echocardiogram revealed that our tiny detective had a 1 in 5000 birth defect called patent ductus arteriosus (PDA). A vessel that exists in utero connecting the aorta to the pulmonary artery and normally closes soon after birth had simply... never shut. This is