Saturday, June 29, 2013

Ever Felt your Heart Skipping a beat?

Ever felt your heart skipping a beat? A missing beat by itself 

might not be significant but if you notice other symptoms 

like fatigue, weakness, fainting spells, and an inability to 

cope with the normal routine then you need to see your 

cardiologist for a complete assessment of your heart’s 

functions.

A lady  in her sixties, an active woman who could multi-task 

with ease. But episodes of irregular heartbeats was taking 

an toll of her life. Her cardiologist put her on a holter, which 

records one’s ECG for 24 hours during normal activity and 

the pulse as well. To her horror, the doctor told her that she 

needed a pacemaker. Apart from irregular heartbeats, she 

also bradycardia (slow heartbeat), which could be 

dangerous, with her pulse dipping to 35 at night when she 

was asleep. She was traumatised and terrified but felt better 

after her doctor explained what was happening.

When the heart’s two upper chambers, the atria, contract, 

blood is pumped into the two lower chambers, the ventricles. 

The ventricles then contract and pump blood to the rest of 

the body. The combined contraction of the atria and 

ventricles is a heartbeat. The heart has its own internal 

electrical system to control the rate and rhythm of 

heartbeats. With each heartbeat, an electrical signal spreads 

from the top of the heart to the bottom.

Each electrical signal normally begins in a group of cells 

called the sinus node or sinoatrial (SA) node. As the signal 

spreads from the top of the heart to the bottom, it 

coordinates the timing of heart cell activity. Faulty electrical 

signal in the heart causes arrhythmias.

Pacemakers use low-energy electrical pulses to overcome 

this faulty electrical signalling.

A pacemaker is a small device that is placed in the chest or 

abdomen to help control abnormal heart rhythms. This 

device uses electrical pulses to prompt the heart to beat at a 

normal rate. Pacemakers are used to treat arrhythmias. A 

fast heartbeat is called tachycardia A slow heartbeat is 

called bradycardia. During an arrhythmia, the heart may 

not be able to pump enough blood to the body. This can 

cause symptoms such as fatigue (tiredness), shortness of 

breath, or fainting. Severe arrhythmias can damage the 

body's vital organs and may even cause loss of 

consciousness or death.

Pacemakers can be temporary or permanent. Temporary 

pacemakers are used to treat short-term heart problems, 

such as a slow heartbeat that is caused by heart attacks, 

surgery or an overdose of medicine. They are also used 

during emergencies. They might be used until your doctor 

can implant a permanent pacemaker or until the temporary 

condition goes away.

When is a pacemaker recommended? “Due to an atrio-

ventricular block the heart rate may be low or absent 

resulting in momentary block or loss of consciousness, 

occasionally even seizures. Then pacemaker implantation is 

mandatory. A pacemaker is also useful when the pumping 

efficacy of heart is low,” says a Dr. 

Ageing or heart disease damages your sinus node’s ability to 

set the correct pace for your heartbeat. This can cause 

slower than normal heartbeats or long pauses between 

heartbeats. This condition is called sick sinus syndrome and 

also warrants implantation of a pacemaker. 

What precautions are advised post-surgery?

“Since we keep our patients for a week following the 

procedure, we make sure the wound is healing well, and 

dressed regularly,” says  the Dr. “The patient is advised not 

to shower for the first two or three days, and not lift the arm 

above the head or carry even small weights, or stretch the 

arm for about six weeks. After a month, if there is any 

discomfort it should be reported.”


Regular check ups once in 4-6 months are advised. The 

patient is advised to get into mainstream activity gradually 

like travelling, driving the car, swimming, resuming the job, 

golfing, and walking which will make you return to normal. 

Even sex is not barred. But there are some things to be 

avoided like entering an electromagnetic field. One should 

keep away from transformers, electric arc welding 

equipment and airport screening devices. The pacemaker 

identification card helps. MRIs are definitely to be avoided.


“Generally, we tell patients to avoid induction cooking, but 

the risks I believe are fairly small,” says Dr. , “but you can 

check with the manufacturer of the device.”

“You should use the mobile phone on the opposite ear, and at 

least six inches away from the implant,” says the Dr. 

 “Other household appliances like microwave oven, electrical 

appliances, computers can be safely used.”

Pacemakers do improve the quality of life and the implant is 

a small procedure, but check with the doctor before taking 

any decision.

What does a pacemaker do?

Relieves arrhythmia symptoms, such as fatigue and 

fainting


Helps a person with abnormal heart rhythms 

resume a more active lifestyle
.
Monitors and records heart's electrical activity and 

rhythm
.


Newer pacemakers also monitor blood temperature, breathing rate, and other factors and also adjust heart rate to changes in activity.


ps- this is only for information, always consult you physician before having any particular food/ medication/exercise/other remedies.





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