The implantable cardioverter-defibrillator is an astonishing device that has splendid capabilities to automatically monitor, diagnose, and help regulate the normal heart rhythm. It is a small electronic device connected to the human heart to increase its heart rate and manage life-threatening electrical problems in the heart.
The early version of the implantable cardioverter-defibrillator came into clinical practice in 1930. The machine used these days is the exclusive version of the previous ICD. The original device only diagnosed ventricular fibrillation, but the new version also monitors, detects, and treats ventricular tachycardia. The advanced features of implantable cardioverter-defibrillator have helped save countless patients from life-threatening electrical problems of the heart.
The latest versions of ICDs are about the size of a stopwatch and are implanted under the skin under the collarbone. It is constructed of a pulse generator and wires known as leads. The pulse generator is made up of a mini-computer and a battery. One or more lead wires are used to connect the pulse generator with the specific locations of the heart.
ICDs are designed to monitor and if needed, shock the heart back into a normal rhythm. If the heart’s rhythm goes abnormally fast, it paces its lower chamber and promotes its normal rhythm. It can also perform defibrillation (electric shock) on the heart to reset its rhythm and avoid sudden cardiac death. Another amazing feature of an ICD is that it stores and records information about your heart rhythm and the therapies performed by ICD. It helps the doctors in reviewing the health condition of the heart rhythm.
People with an ICD implantation often can’t feel anything different when ICD paces the heart. But defibrillation is often felt by the patients as a sudden ” kick in the chest” due to sudden electric shock given to the heart.
Another characteristic of ICD is that it can be programmed to act as a “pacemaker.” A pacemaker is also a small electric device for treating cardiac problems. It sends small pulses to the heart to maintain a steady heartbeat. If the heart rate becomes too slow after an electric shock or after defibrillation an ICD has a backup pacemaker, which sends small pulses as signals to the heart and brings the heartbeat back to a normal rhythm. The backup pacemaker of the ICD keeps working until a normal rhythm of the heart is achieved. An ICD automatically becomes a pacemaker at any instant when the heart rate decreases after a reset or electric shock (defibrillation).
In some cases, when patients don’t require the ‘backup’ pacemaker or ATP, the ICD device uses Subcutaneous Implantable Defibrillator (S-ICD). This state sends high-energy electric shocks to the heart through leads wires, avoiding the potential risks. Lead wires carry the electric shock through the veins into the heart. ICD or cardiovascular medicine is the primary prevention for patients surviving cardiac arrest. Secondary prevention is proper medication.
ICD implantation depends upon the person’s cardiac conditions. Suppose a person has suffered from sudden cardiac arrest due to ventricular fibrillation or has suffered from ventricular tachycardia or has other inherited heart problems. In that case, his medical practitioner may recommend an ICD.
Implantable cardioverter-defibrillators are frequently implanted in people who have a high probability of sudden cardiac death due to ventricular arrhythmia. This consists of patients with congestive heart failure, having issues with blood pumping (such as abnormal left ventricular ejection fraction). Patients who have a history of hemodynamically significant sustained VT, heart failure, or atrial fibrillation are typical candidates for an ICD.
Another dangerous type of arrhythmia is Ventricular fibrillation, which is an irregular heart rhythm. Ventricular fibrillation (V-Fib) directly affects the heart’s ventricles, as described in its name. The human heart is made up of four chambers. Each chamber has its job. The two lower or bottom chambers are known as ventricles.
In healthy conditions, the human heart pumps blood through these chambers forcing blood circulation throughout the body. V-Fib is known as “ventricular fibrillation” because it begins from ventricles. When the Sinoatrial Node (SA Node) sends wrong electric signals that instruct the heart to fibrillate instead of pumping blood, it causes abnormal heart rate. The fibrillation or quivering of the heart leads to no pumping of blood throughout your body. If ventricular fibrillation occurs several times, then it is known as an “electrical storm.”
Treatment: ICD (implantable cardioverter-defibrillator) insertion or antiarrhythmic drug therapy
Ventricular fibrillation could be triggered due to the following:
Ventricular tachycardia is another dangerous arrhythmia that is due to an abnormally fast heart rate. This disorder also occurs in the lower chambers, “Ventricles” of the heart. That’s why these are known as “ventricular tachycardia.” For instance, three or more beats in a row or 100 beats per minute are considered ventricular tachycardia. If the situation continues for more than three seconds in a row, it may trigger other dangerous cardiac disorders. When arrhythmia or the above-described situation lasts for more than 30 seconds, it is called sustained ventricular tachycardia. Sustained ventricular tachycardia doesn’t give the heart enough time to fill with blood before the heart contracts again. This will have negative effects on the flow of blood through your body.
Treatment: Implantable cardioverter-defibrillator implantation or antiarrhythmic drug therapy
Sometimes the causes of V.T. can be discovered, but when V.T. occurs in young people, it is difficult to find the cause. Major triggers for V.T. are explained below:
Although the typical implanting of an ICD is very common and not considered too invasive, the procedure does have potential risks and complications. According to clinical practice guidelines, some of these are listed below:
An ICD is a small stopwatch-sized electronic device. It is implanted in the skin under the collarbone. It is programmed to automatically treat major cardiac diseases such as ventricular fibrillation and dysrhythmias using ventricular pacing. It was specifically designed to treat ventricular tachyarrhythmias.
Before the ICD, it was difficult to save the life of patients at risk for sudden cardiac death. The invention of implantable cardioverter defibrillators revolutionized the method of proactively treating cardiac disorders.
A pacemaker is also a small electric device designed to provide continuous electric pulses to the heart when myocardial electrical activity is absent or too slow. It is also implanted in the chest in the skin under the collarbone.
A pacemaker is designed for a specific ventricular pacing task but implantable cardioverter-defibrillator functions as both defibrillator and as a ‘backup pacemaker’ to retain the heart’s normal rhythm.
Any surgical or medical procedure comes up with risks. Possible risks from ICD insertion are as follows:
ICD insertion can be performed on an outpatient basis. Procedure or surgery methods can be different depending upon the patient’s condition and your cardiologist’s practices.
Mostly, ICD insertion follows the following criteria:
There is always a long debate that ICD therapies can increase mortality rate in selected Heart failure and left ventricular systolic dysfunction patients because it can stop arrhythmic sudden cardiac death with quick defibrillation. Furthermore, some researchers also claim that a prolonged life after ICD shock has its own cost and can lead to adverse consequences.
While some studies state that the healthy life of patients who have experienced implantable cardioverter-defibrillator shock is affected adversely, whether they are suitable for it or not. According to recent studies, patients who received a shock in a specific time assessment had a lower health-related quality of life. But the patients who didn’t receive a shock in the given time assessment have a better health-related quality of life. Thus, patients who received shock were observed to have poorer health both mentally and physically.
Psychological diseases also relate the implantable cardioverter-defibrillator shocks. 24% to 87% of patients who experienced implantable cardioverter-defibrillator shock were diagnosed with high and worsened symptoms of anxiety disorders. Furthermore, patients who got more implantable cardioverter-defibrillator shocks were significantly observed to be more depressed and anxious as compared to other patients receiving only one ICD shock. Thus, more than 5 shocks of implantable cardioverter-defibrillator in patients lead to high leveled anxiety (constant feeling of fear and dread in minimal situations) and other psychological disorders.
Professors interviewed about 90 patients with implantable cardioverter defibrillators, whose main goal was to diagnose anxiety disorders. About 16.7% of patients had panic disorders or agoraphobia, and this ratio is significantly higher than compared to the general population.
Patients who received ICD shock had a 21% ubiquity of being diagnosed with anxiety disorder. While a ratio of 6.9% commonness in those patients without an implantable cardioverter-defibrillator shock. Implantable cardioverter-defibrillator shock greatly contributes to the psychological disorders of the patients. Hence, patients having implantable cardioverter-defibrillator have relatable maximum rates of psychological distress. There isn’t any study claiming that psychological distress occurs only in the patients who suffer inappropriate implantable cardioverter-defibrillator shock.
Other than psychological disorders, implantable cardioverter shocks have maximized the risk of heart failure hospitalization. Patients with left ventricular systolic disorder had a high rate of hospitalization due to ICD shocks. According to approved research, the risk of heart failure hospitalization in one year for ICD patients was about 26% to 31%. But if we compare it to the patients without ICD, then the ratio certainly decreases to 19%.
Current clinical trials have been succeeded in finding the relevance between implantable cardioverter-defibrillator shock and mortality. Both inappropriate and inappropriate ICD shocks were significantly fatal to mortality and rapidly advanced the risk of death. At the same time, a 20% increment of mortality was observed in ventricular arrhythmias related to implantable cardioverter-defibrillator therapies. Although, no oscillation was observed in the mortality rate of patients with ATP-treated arrhythmias. The most severe reason for death in implantable cardioverter-defibrillator patients was progressive heart failure aftershock.
Studies show various disputes over the relevance between ICD shock and bad outcomes. The dependence between both is still unclear. A possible description for the relevance is that ICD shock can have bad outcomes by giving rise to myocardial injury. It is also often observed that patients with low health status experience ventricular arrhythmias. However, it is claimed that ICD shock is a marker rather than a negotiator of adverse consequences.
ICD usually uses pacing stimulation tactics for the termination of tachyarrhythmias. Antitachycardia pacing is highly effective and safe than ICD shocks. In this technique, ICD provides relatively high ventricular paced beats than the underlying arrhythmia. ATP can effectively stop reentrant arrhythmias, even monomorphic V.T.s as fast as 240/min, which leads to restriction of need for shocks in many cases. Studies prove that anti-tachycardia pacing can prevent more than 90% chances of spontaneous ventricular arrhythmia. ATP also has various benefits over shocks like less patient discomfort, lower risks of adverse outcomes, and less battery usage. ATP is highly suggested as preliminary therapy for many monomorphic V.T.s. Otherwise, it shouldn’t be used.
Two specific programming techniques have been devised to reduce the requirement of ICD shocks to prevent its bad outcomes. The first one is ATP for V.T. faster than 200/min; it has been traditionally used to treat patients due to safety concerns. It comes up with the following outcomes:
The second programming strategy is the aggressive use of ATP, SVT discriminators. It led to a high-output first shock compared with a historical control cohort of patients. It lowered the risk for any shock during the first year (8.5% vs. 16.9%) for the patients who had ICD parameters programmed at the discretion of their physician.
Recent studies evaluated more severe ventricular arrhythmia detection algorithms. Studies also claim that more stringent use of ATP would reduce inappropriate therapies once ventricular arrhythmia is detected. Patients included in this study reduced the first and total occurrence of both appropriate and inappropriate therapy. Patients who followed these two programming strategies did not have any effect on their mortality rates.
V.T. tends to be sudden in the beginning and is somewhat stable. Sinus tachycardia advances gradually and has low stability. Studies claim that strategizing sudden beginning and stability criteria can help discriminate supraventricular arrhythmias and reduce the chances of inappropriate shock. Moreover, surface QRS during V.T. is more complicated and generally differs from that during sinus rhythm. Discrimination algorithms can detect the differences in the contour of the sensed intracardiac electrograms compared with a template of the electrograms during the known normal rhythm of the heart. However, all ICD devices are already programmed, but still implanting clinician must prefer reviewing the device settings beforehand because the settings may not be suitable for the individual patient. Randomized clinical trials that cardiac resynchronization therapy can be taken as secondary prevention from atrial fibrillation or heart failure trial. Transcatheter aortic valve replacement is also introduced in heart failure trials as primary prevention.
A dual-chamber ICD can theoretically help differentiate between Supraventricular tachycardia and ventricular tachycardia by sensing the knowledge to discriminate between these two types of arrhythmias. If you can spot atrioventricular dissociation, it can lead to helping you in distinguishing ventricular tachycardia from supraventricular tachycardia. It can be done by using surface electrocardiography but also via the sensed device electrograms.
The main theme for this tactic is that a ventricular rate of 200/min with an atrial rate of 75/min would be constant with ventricular tachycardia (V.T.); in contrast, a ventricular rate of 109/min with an atrial rate of 350/min recommends Supraventricular tachycardia (SVT). However, studies proving the effective results (at reducing the risk of inappropriate ICD shocks) of dual-chamber ICD are much limited.
Moreover, the apparent advantages of dual-chamber ICD devices are worth the costs. These devices are more expensive and likely relate to higher periprocedural complication rates than single-chamber ICDs.
It is stated that some specific antiarrhythmic medications tend to reduce the frequency and intensity of ICD shocks. This mechanism can allow patients to tolerate V.T. better hemodynamically, thereby allowing for broader use of ATP. The mechanisms of benefit come up with:
The risk of heart failure hospitalization mortality among patients with LVSD can be reduced by evidence-based heart failure therapy having beta-blockers, angiotensin-converting enzyme inhibitors, and aldosterone receptor antagonists. Evidence-based heart failure therapy is not much used on patients eligible for ICD implantation, which in turn may add to the trouble of ICD shocks.
However, optimal ranged medical therapy can improve left ventricular systolic function such that ICD therapy may no longer be warranted. In addition, this therapy also improves symptoms of heart failure, mortality, and the risk of ventricular arrhythmias, resulting in ICD therapies. Beta-blockers would also decrease the ventricular rates in patients with supraventricular arrhythmias such as A.F. It could prevent unsuitable ICD shocks.
Only optimal heart failure therapy may not be sufficient to avoid ICD shocks. In recent researches, randomized trials were done to compare the effects of β-blocker alone, amiodarone, and a β-blocker, or sotalol. In individual trials, 40% of patients treated with β-blockers alone had shocks at about 1 year, while those nursed with amiodarone and β-blockers had only a 10% risk. Hence, left ventricular systolic disorder patients should receive optimal heart failure therapy. In some selected LVSD patients, receiving additional cardiac rhythm control therapy may be validated.
Antiarrhythmic (cardiac rhythm abnormalities) medications also have some restrictions. Sotalol has about a 1% to 4% risk of triggering torsades de pointes, which occurs especially within patients who intake higher doses, with higher creatinine levels and a history of V.T. or heart failure. Furthermore, Amiodarone results in various significant and rarely severe extracardiac toxic effects. Thus, the addition of antiarrhythmic medications should be individualized after monitoring the number of shocks, the pros & cons of these shocks on the patient, and the risk of bad effects of the medications.
Ventricular arrhythmias are also treated with catheter-based ablation techniques. The traditional indicator for ablation is V.T. not yielding to medical therapy treatment in patients who also receive multiple ICD shocks. The prudent usage of this technique on the rate of ICD therapy in secondary prevention patients was examined in random order to either catheter ablation using a substrate-based approach or no ablation. Patients who received catheter ablation had 65% less risk of receiving ICD therapy and 73% less risk of receiving shocks. Furthermore, catheter ablation had no significant effect on the quality of life or mortality rates. Catheter ablation was conducted only at highly experienced centers. As it is highly operator dependent, therefore, is not widely available. In addition, no general adverse effects of catheter ablation were reported, yet the procedure inherently had multiple potential complications. Catheter ablation techniques shouldn’t be observed as prophylaxis to decrease ICD therapy because of a lack of evidence and clinical trials in this regard.
Patients who do not go through implantable cardioverter-defibrillator implantation will ultimately not receive ATP or shocks. Any technique to reduce the unsuitable device therapies should initially ensure that the decision to implant an ICD is based on established indications outlined in the relevant clinical guidelines. Rigorous adherence to current evidence in deciding patients for ICD implantation will ensure that the benefits of the treatment would be more than the risks of therapy (including risks of inappropriate shocks). A recent study claims that the strategy for patient selection for primary prevention ICD therapy needs improvement.
Moreover, a selected patient received multiple inappropriate ICD shocks for sinus tachycardia while exercising. During ICD implantation, the programmer’s default programming settings are often used, including a lower-limit V.F. zone starting at 180/min. The implantable cardioverter-defibrillator was reprogrammed to a higher-threshold heart rate for the V.F. zone, and his β-blocker dose was increased to reduce the risk of inappropriate ICD shock. The selected patient has since been free of inappropriate ICD shocks while maintaining his active exercise sessions.
Implantable cardioverter-defibrillator surely minimizes the risk of Sickle Cell Disease (SCD) and can exclusively increase the lifespan in selected high-risk patients. Patients also need to understand that many with ICDs receive a shock. But the benefit of the device surely results from its treatment of malignant ventricular arrhythmias. Unfortunately, shocks can be nonlethal rhythms (inappropriately delivered) as well. Furthermore, both appropriate and inappropriate shocks affect health status and can have other important health outcomes.
Sudden death due to cardiac arrest is a significant health problem that affects almost 500 000 people in the U.S. annually. An implanted automatic defibrillator can treat malignant ventricular arrhythmias.
Clinical trials prove that defibrillator therapy has improved survival in high-risk populations. Cardiac death is a diversified problem, yet defibrillator therapy has been proved beneficial for the population’s mortality with ischemic heart disease. Prophylactic therapy of ICD becomes the single best option when the left ventricular ejection fraction of 35 percent or less is found. That is why patients having a life-threatening heart disease should benefit from defibrillator therapy.
The best step to select patients at risk of cardiac death (who can get the most out of ICD implantation) is assessing ejection fraction. For optimal care, a cardiologist must understand and evaluate each patient’s ICD type, indication, cardiovascular condition, and etiology of heart disease.
Moreover, the circumstancing relevant to the index event can easily be discovered if ICD was implanted as secondary prevention. Assessment of defibrillator shocks is done to judge the evaluation of the patient’s cardiovascular conditions carefully. If you experienced or felt appropriate or inappropriate ICD shocks, you should first consult your cardiologist or some subspecialist. Device interrogation can also be conducted to properly check and facilitate the management of ICD or cardiac pacemakers.
Some common risk factors for sudden cardiac arrest are discussed below:
CAD is a significant reason for angina (chest pain), myocardial infarction (heart attack), and even cardiac arrest (sudden stopping of the heart). Myocardial infarction or heart attack often occurs due to severe coronary artery disease. Myocardial infarction highly triggers ventricular fibrillation and sudden stopping of the heart. Another adverse fact is that a heart attack often leaves scar tissues in the heart of the victim. Electrical short circuits due to improper working of S.A. node around the scar tissue can trigger abnormalities in the victim’s heart rhythm.
Acute myocardial infarction occurs when there is a blockage that affects the oxygen-rich blood from reaching the heart. This significant cardiac complication often occurs in patients without risk factors. Clinical trials claim that they had once experienced cardiac arrest in a patient due to acute myocardial infarction without any risk factors during the process of head and neck reconstructive surgery.
A typical difference between cardiac arrest and heart failure is that heart failure often happens gradually, while cardiac arrest occurs immediately often without warning. Heart failure can lead to cardiac arrest and arrhythmia. Ischemic or nonischemic cardiomyopathy causes reduced left ventricular ejection fraction, which results in the sudden stoppage of the heart.
An arrhythmia occurs when a patient experiences an abnormal heart rhythm. Abnormal heart rhythm means that the patient’s heart rate becomes too fast or too slow, which leads to various adverse effects. Some versions of arrhythmia are brief and harmless. But some kinds of arrhythmia can trigger sudden cardiac arrest. Arrhythmia in the lower chamber of the patient’s heart (ventricle) is the most common heart rate that causes sudden stoppage of the heart. It includes prior sustained or nonsustained ventricular arrhythmias.
Some relatively less common risk factors for cardiac arrest are given below:
Structural Heart diseases include Arrhythmogenic right ventricular dysplasia, Hypertrophic cardiomyopathy, Coronary circulatory anomalies, Congenital heart disease, Severe left ventricular hypertrophy, and Myocarditis. These symptoms or risk factors are relatively less common, but still, there are some chances that these diseases may trigger cardiac arrest.
The electrical disease can be due to long Q.T. syndrome, drug-induced Q.T. prolongation and polymorphic ventricular tachycardia, Brugada syndrome, Complete heart block, catecholaminergic polymorphic ventricular tachycardia, preexcitation syndrome, chest wall trauma, and primary electrical disease. These symptoms are also part of less common factors of sudden cardiac death.
Pacemakers and ICD devices can mostly last 5 to 7 years or longer. Its lifespan depends upon the usage and type of pacemaker or ICD device. There are various examples in the world that prove you can lead a normal life with an ICD. The latest updates in technology have reduced the chances that other electronic devices (such as microwaves, T.V., etc.) could affect your device. But still, you must follow the precautionary measures when you have a pacemaker or ICD.
Here’s a brief description of the precautions you need to consider. You can get further details about these from your doctor.
You can always consult your cardiologist if you have any questions about preventive measures or if you are not sure whether you can have a certain surgery or not.
Before undergoing ICD implants, it might be difficult for you to make up through your daily activities. But after you have succeeded in ICD implantation, you can do the same daily activities everyone else of your age is doing. Although your daily activities will be quite limited until the incision (wound or cut from the surgery) is completely healed. No worries, as this limit will not be more than 3 weeks, depending upon the aftercare and your cardiologists’ instructions. ICD or pacemaker patients would be able to do the following activities:
Once you have your ICD or pacemaker implanted, you can continue your daily activities after a few days of rest. Exercise is the most important factor of daily life in order to stay healthy. Don’t worry, as you can easily continue your daily exercise with ICD or pacemaker. Initially, your cardiologist will suggest you some light exercise that will help you live a healthy life. Later, you can increase the intensity of exercise according to your doctor’s instructions.
Driving is another important activity of daily life which can’t be ignored. People highly depend on the driving vehicle in order to reach any destination. Once you are cleared (permitted) by a doctor, you can drive your vehicles. However, some legal laws may prevent you from driving. This restriction will be for the first 6 months after you have got your ICD implants. This restriction is because the device may get fired, which will lead to abnormal heart rhythm. This may further lead to fainting or cardiac arrest. Also, patients with ICD cannot get a commercial driver’s license, according to law restrictions.
Working is the basic need of life, as you need to earn to fulfill your life’s needs. There are myths about ICD implantation that you can’t work properly after the process. But these are all false ideas. After the prescribed amount of rest, you can get back to work like everyone else. ICD implantation will not become a hurdle in your work life.
Another common myth about ICD and pacemakers is that patients can’t involve themselves in sports or other recreational activities. It is completely wrong. However, ICD patients can naturally involve themselves in sports and other activities. Although patients should make sure not to put much pressure on the chest as it may affect the working of their ICD or pacemaker. If you get a pressured blow on your chest, make sure to see your cardiologists to check that your device’s functioning is not damaged.
Moreover, you can make it through a shower and baths as well. If you have any confusion about a certain daily activity, make sure to ask your cardiologist.
Implantable defibrillators are built to last for at least 5 to 7 years. But you should still get a regular check-up to make sure that your implantable defibrillators are working properly. Schedules for checking devices may differ in different cardiologist centers. Some advanced implantable defibrillators can be monitored at home remotely over a telephone or internet connection. The manufacturers of the implantable defibrillators provide all equipment required for the monitoring system of the device. Other than remote monitoring, your cardiologist will also schedule an in-person device check after specific intervals. If there is any change required in the settings, it must be done by a trained medical professional using a device programmer.
A device interrogation is used to check or monitor lead wire condition, battery life, and other functions. Interrogation is done by connecting ICD with the detecting device. This connection is done noninvasively without any surgery. A special wand-like device is placed on the skin where ICD is implanted. ICD and detecting device is connected in this way. Data recorded by ICD is transmitted from the device to the programmer, and further specifications are evaluated. In-home or remote interrogation device systems usually have wireless technology connections to special equipment that evaluates the necessary data and sends it to your cardiologist.
Your cardiologist may also ask you to record your pulse rate periodically. Inform your cardiologist of any unusual symptoms or symptoms similar to those you had before undergoing ICD implantation. Make sure always to consult your cardiologist for more information, if needed.
You must know ‘how to check your pulse’ in order to record it after specific intervals. The heart is considered the most important part of the body because it pumps blood throughout the body. As the blood pumped by the heart reaches the arteries, heart-pumping beats can be felt by firmly pressing over the arteries. Arteries are located near the bare surface of the skin at certain locations on the body. Pulse can easily be detected on the inside of the elbow, on the side of the lower neck, and at the wrist.
You can read your pulse by following tips:
Defibrillator therapy has great benefits for the survived victim of sudden stopping of the heart. Implantation of ICDs is increasing day by day in people at high risk of sudden termination of working of the heart. An ICD reduces the risks of sudden death from immediate heart stoppage more than any cardiac medication.
Sometimes ICD shocks can be disturbing; such an unsettling feeling is a sign that your ICD effectively treats abnormal heart rhythm and keeps the patient safe from sudden death. Consult your cardiologist about how to care for your ICD.
The lithium battery used in ICD devices can last about 5 to 7 years. The battery will be observed thoroughly during the regular checkups after specific intervals (mostly after six months). If the battery seems to be nearly out of power, the ICD generator is changed with a new one. A minor outpatient procedure does this replacement.
Even if the patient with ICD becomes terminally ill, ICD will still continue its therapy and provide ICD shocks if required. ICD should be deactivated in order to terminate ICD shocks. The cardiologist does a small procedure to turn off the device if desired. Deactivating ICD will lead to the prevention of unwanted shocks and unnecessary tolerance. This process won’t stop your heart suddenly.
Consult your cardiologist if you want deactivation of ICD. Also, discuss your wish with your family members or guardian who makes medical decisions for you about what you could in an end-of-life care situation.
The simple answer to this question is “No.” You might be wondering why! Let me explain. Cure means permanently elevating or eliminating the condition. That’s proving cure is not a function of ICD. ICD is used as part of a cardiac patient’s treatment. It automatically detects the cardiac disorder and applies the appropriate therapies to normalize the heart rate.
No! as ICD is programmed to treat acute cardiac or rhythmic disorders. It is particularly programmed to treat lower chambers or portions of the heart. Many technical types of research are done to create a new version of ICD that can treat all rhythmic problems. A good rhythmic condition can often be attained by the medications only. But if the situation worsens, consult your cardiologist. Your doctor will perform an EP study on you to know more about your cardiac condition. Your doctor will discuss if you require ICD insertion.
ICD shocks are never observed as painful. However, the experienced persons state that ICD shocks give an unsettling feeling, not painful. ICD usually delivers a shock to treat abnormally fast heart rate. The shock is given instantly without any delay to get the normal rhythm back.
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