Cardiac device not tied to cell service

Dear Dr. Roach: Many years ago, I was diagnosed with atrial fibrillation and then was on medication for 10+ years. I eventually had an ablation done, and I am finally back in normal rhythm. I have been off all meds for AFib for over a year.

Two of my family members have had strokes due to AFib, so I am very concerned. I brought these events up to my cardiac doctor recently, and he has suggested a micro-sized cardiac device.

I’ve read up on this device, but I was wondering whether one can continue to record if outside of the country, or would it stop recording and transmitting info to one health care provider.

After the pandemic I have plans to go to the Holy Lands for two or three weeks. I also hope to visit a week or two each in Ireland and England.

K.K.

Answer: I spoke with a specialist at Medtronics, the manufacturer of one of the implantable recorders. They told me their device has about an hour of memory, and the device is programmed to identify and record any heart rhythm abnormalities, such as an episode of atrial fibrillation, or any time you activate the system if you are having symptoms.

They noted that very often, the device and communication monitor — which you should bring with you when you travel — are able to connect in many countries, but it depends on the cell service where you are.

Still, the unit has memory, so it will send a report to your doctor as soon as it is able to connect.

Dear Dr. Roach: Can you tell me if there is any risk to taking Miralax on a regular basis?

J.W.

Answer: Miralax is a brand of polyethylene glycol. It is not absorbed by the body, and works by taking water with it, which makes bowel movements less hard. It is safe to use long term. However, the real question is, Why would someone have such severe and longlasting constipation? An undiagnosed low thyroid level would be a concern, for example. If no medical issue was found, it’s best to try dietary changes before resorting to a medication long term.