Hello and thank you for using HCM.I carefully read your question and I understand your concern.I will try to explain you something and give you my opinion. Palpitations are related whith a heart rhythm issue. There are some electrical impulses that generates from different parts of the heart different from normal sinus rhythm.They cause a premature heart contaction that its not a normal one followed by a pause and than a normal heart contraction. In this cases the person experience palpitation, flattering sensation, anxiety, difficulties in breathing deeply. There are different causes of this rhythm issue like simple stress , coffee and alcohol consumption so it is mandatory to avoid this. Also there are many different pathologys like anemia, hyperthyroidism or ischemic heart disease that might cause palpitations So, if I was the treating doctor I will recommend some examination like a fool blood analyze to exclude anemia , hyperthyroidism. I will also recommend what your doctor has already done, a holter rhythm monitoring to see the frequency of the extra beats. If your husbant will not experience palpitations during the hole month than this is nothing to worry about. If it is possible I will also recommend a stress test. After knowing the frequency and excluding some factors we can decide how to treat them. Hope I was helpfull. Best regards.