pacemaker

Source of rhythmic electrical impulses that trigger heart contractions. In the heart's electrical system, impulses generated at a natural pacemaker are conducted to the atria and ventricles. Heart surgery or certain diseases can interrupt conduction (heart block), requiring use of a temporary or permanent artificial pacemaker. A small electrode attached to an electric generator outside the body is threaded through a vein into the heart. The generator, inserted beneath the skin, produces regular pulses of electric charge to maintain the heartbeat. Permanent pacemakers can also be implanted on the heart's surface.

pacemaker

1. Anatomy a small area of specialized tissue within the wall of the right atrium of the heart whose spontaneous electrical activity initiates and controls the beat of the heart

2. Med an electronic device for use in certain cases of heart disease to assume the functions of the natural cardiac pacemaker

pacemaker [′pās‚māk·ər]

(medicine)

A pulsed battery-operated oscillator implanted in the body to deliver electric impulses to the muscles of the lower heart, either at a fixed rate or in response to a sensor that detects when the patient's pulse rate slows or ceases. Also known as cardiac pacemaker; heart pacer.

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Fixed-Price Incentive Contract, Value Engineering
Fixed-Price Incentive, Firm
Fixed-Price Incentive, Successive Targets
Fixed-Price Tender
Fixed-price tender offer
Fixed-Price with Economic Price Adjustment
Fixed-Price With Redetermination
Fixed-Price-Labor-Hours
Fixed-Priority Periodic Task
Fixed-Priority Preemptive System
fixed-product area
fixed-program computer
fixed-quantity system
Fixed-Queries Tree
fixed-rate
fixed-rate
Fixed-Rate Capital Securities
Fixed-Rate Capital Security
Fixed-Rate Entropy-Coded Trellis-Coded Quantizer
Fixed-Rate Entropy-Constrained Vector Quantization
Fixed-rate interest
Fixed-rate interest
Fixed-rate interest
Fixed-rate interest
Fixed-rate interest
Fixed-rate loan
Fixed-Rate Loans
Fixed-Rate Mortgage
Fixed-Rate Mortgage
Fixed-Rate Mortgages

fixed-rate pacemaker

Fixed-rate payer
Fixed-Rate Payers
Fixed-Rate Quantization
Fixed-Rate Receiver
Fixed-Rate Receivers
Fixed-Rate Securities
Fixed-Rate Security
Fixed-Rate Transport Protocol
Fixed-Rates
Fixed-Ratio
Fixed-Return Investment
Fixed-Return Securities
Fixed-Return Security
Fixed-Routing with First-Fit
Fixed-Routing with Most Used
fixed-satellite service
fixed-sequence robot
Fixed-Site Decontamination System
Fixed-Size Importance Sampling
Fixed-Spectrum Frequency Assignment Problem
Fixed-Step Adjustment
Fixed-Step Power Control
Fixed-Step Serial Search
fixed-stop robot

pacemaker (redirected from fixed-rate pacemaker)

pacemaker

pacemaker
(redirected from fixed-rate pacemaker)