text: understaning pressure reading of a doppler ultrasound? i'am a 47yr. old female smokes pack a day.i had a doppler ultra sound and a echo done the pa that did the echo advised me to se a dr. a.s.a.p. and my doppler reading on the rt. side was 138.my chol. broke down is311.how concerned should i be.do hav weakness in limb's sometime and minor pain in limb's sometime lot of acid reflux and heartburn.all of my faimly has died of cancer and heartattacks.my mother at 63 ofarteriosclerotic heart disease.should i be concerned? well you dint specify any thing about doppler study?.  what ever the case your smoking is going to cause you lot of trouble, better be concerned from now and follow your physician advise.