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Surgical Implantation of Cardiac Rhythm Devices E-Book
Jeanne Poole, Lyle W. Larson
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eBook - ePub
Surgical Implantation of Cardiac Rhythm Devices E-Book
Jeanne Poole, Lyle W. Larson
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Unique in the field, Surgical Implantation of Cardiac Rhythm Devices provides complete, easy-to-follow guidance for safe, effective surgical implantation of pacemakers, ICDs, and other devices. Beginning with surgical anatomy and surgical principles, expert authors provide thorough coverage of surgical technique and procedures â everything from sutures to special circumstances and complications. Detailed, high-quality illustrations show you exactly how to proceed, and each procedure includes an accompanying video clip online.
- Outlines relevant anatomic structures and landmarks, as well as various types of sutures and instruments.
- Provides authoritative, detailed guidance on transvenous lead placement, including novel or alternative placements, as well as implantation of subcutaneous ICDs.
- Covers tools and techniques, anesthesia, radiation safety, pitfalls and complications, tips and pearls, patient preparation, postoperative patient management, and follow-up care.
- Offers expert coverage of pediatric considerations and other special circumstances.
- Allows you to view surgical procedures and relevant anatomy in video clips online, as well as through extensive, high-quality illustrations in the text.
- Ideal for EP fellows, practicing electrophysiologists, and cardiologists who perform surgical procedures to implant pacemakers, ICDs, and other devices.
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Sujet
MĂ©decineSous-sujet
Cardiologie1
Development of Cardiac Implantable Electrical Devices
Rakesh Gopinathannair, and Brian Olshansky
Introduction
A remarkable collaborative and forward-thinking effort led to the development of cardiac implantable electrical devices (CIEDs), which can stimulate the heart to beat, protect against cardiac arrest, monitor physiologic parameters and arrhythmias, and improve and forestall heart failure. Some key events that led to modern CIEDs and their implantation are described here with a look toward the future.
Where Did It Start?
Myths and science converge in the initial attempts at cardiac stimulation. The rather dubious beginnings are hard to establish precisely, considering the naivety regarding mechanisms and lack of documentation and peer review. Initial observations occurred before electricity was understood fully and before wall power. Nevertheless, cardiac stimulation began hundreds of years ago, if not long before that, first mechanically, then electrically.
William Harvey made an arrested pigeonâs heart beat with the flick of a finger.1â3 Physicist Nickolev Abildgaard realized that electrical shocks could cause a hen to collapse but additional shocks brought it âback to life.â4 By the 1900s, electrical currents were seen to start and stop ventricular fibrillation.5 Rudimentary electrical resuscitative device attempts for ambulances, however, initially met with little success.
Birth of the Pacemaker
Astounding observations lent credence to the concept that electricity affected the heart (Table 1.1). In one instance, a child who drowned was resuscitated by attaching one electrode to the leg while rhythmically tapping the heart with another (Duchenne de Boulogne, 1806â1875). Why this was attempted is not clear. In another instance, electrical cardiac stimulation was seen to affect heart rate directly in a woman who had a chest tumor removed, leaving her heart exposed (H. von Ziemssen, 1829â1902). Unfortunately, stimulation attempts may have resulted in her death.
In 1889, John Alexander McWilliam reported brilliant work that showed electrical impulses could cause ventricular contraction (Fig. 1.1). He stated:
The heart was inhibited by stimulation of the vagus nerve in the neck, and then a periodic series of induction shocks (regulated by a metronome) was applied to the apex of the ventricles.⊠A series of single induction shocks excites a corresponding series of cardiac beats; the ventricular contraction precedes the auricular contraction when the exciting shocks are applied to the ventricles. Each systole causes the ejection of a considerable amount of blood into the aorta and pulmonary artery, and a marked rise of the blood-pressure at each beat.6
Although early experiences were not uniformly successful, by 1927, Marmrostein had found a way to electrically stimulate a dogâs heart.7 Soon thereafter, human cardiac pacing emerged. Mark Lidwell, an Australian physician, is considered one of the fathers of modern pacing. In 1928, with alternating current and a needle inserted into a ventricle, he used intermittent electrical stimulation to resuscitate a child born with a cardiac arrest.8 To extend these initial observations, in 1932, Albert Hyman, a cardiologist working at the Beth David Hospital in New York, utilized a needle he called a âpace-makerâ to create an injury current in the heart (âintracardiacâ therapy) to allow it to beat again. In collaboration with his engineer brother, C. Henry Hyman, he developed a spring-wound, hand-cranked stimulating motor he called an âartificial pacemaker.â2 The mechanism was simple, but it worked and was used 43 times with success in 14 patients (Fig. 1.2). Based on the need for increasing heart rates during hypothermic procedures, Wilfred Bigelow, working with John A. Hopps, an electrical engineer, developed a transvenous catheter electrode that was placed in the heart and activated using an external stimulator.1
Further development halted for quite some time when, in 1951, Boston cardiologist Paul Zoll developed an external (transcutaneous) pacemaker that could stimulate the heart but required 50 to 150 V of alternating current delivered via external metal electrodes strapped to the chest (Fig. 1.3). It was painful and caused skin burns. The longest period of pacing with his system was approximately 11 days, but his initial work became a starting point for development of the implantable pacemaker. Aubrey Leatham and Geoffrey Davies improved Zollâs transcutaneous stimulator by developing circuitry that could sense the electrocardiogram and pace only when needed. It had a fixed rate and two output ranges, thus creating the first âdemandâ pacemaker.9
TABLE 1.1
History of Electrotherapy and Cardiac Pacing
Year | Observation/Development | Scientist |
1580 | Syncope and association with slow pulse | Geronimo Mercuriale |
1600 | Restarted an arrested pigeonâs heart by a simple flick of the finger | William Harvey |
1791 | Electricity can stimulate living tissue | Luigi Galvani |
1800 | Devised the first electric battery | Alessandro Volta |
1850 | Induced ventricular fibrillation by electrical current in a dog heart | Carl Ludwig |
1872 | First successful resuscitation using external cardiac stimulation | Duchenne de Boulogne |
1882 | Heart rate change and arrhythmias through direct electrical current to the heart | Hugo von Ziemssen |
1880â1890 | Electrical currents could initiate ventricular fibrillation but strong electrical shocks can also potentially defibrillate the heart | Jon McWilliam, Jean-Louis Prevost, and Frederic Batelli |
1892 | The electrocardiogram | William Einthoven |
1927 | Used transvenous and transthoracic electrodes to pace various chambers of the dog heart | M. Marmrostein |
1928 | With alternative current and a needle inserted into a ventricle, intermittent electrical stimulation was able to resuscitate a child born with a cardiac arrest | Mark Lidwell |
1932 | The first âartificial pacemakerâ (Hymanotor) | Albert Hyman, Henry C. Hyman |
1949 | First catheter electrode for pacing | Wilfred Bigelow, John A. Hopps |
1951 | External (transcutaneous) cardiac pacemaker | Paul Zoll |
1957 | First battery-operated wearable pacemaker | Earl Bakken, C. Walton Lillehei |
1958 | First implantable pacemaker | Rune Elmqvist and Ake Senning |
1958 | Endocardial pacing electrode | Seymour Furman, John Schwedel |
1960 | The lithium-iodide battery | Wilson Greatbatch |
1972 | Radioisotope pacemaker | Victor Parsonnet |
1978 | First dual-chamber pacemaker | H.D. Funke |
Early 1980s | Steroid-eluting leads | |
Mid-1980s | Rate-responsive pacemaker | |
1990s | Microprocessor-driven pacemakers | |
2000s | Biventricular pacemakers |
C. Walton Lillehei found that a pacemaker, attached with a wire electrode directly placed in a dogâs heart, could stimulate at lower voltages and with shorter pulse widths. In January 1957, a 3-year-old girl, who had developed complete heart block after open-heart surgery to correct a congenital defect, was paced using the Lillehei system and ultima...