Method for Study of Electrocardiogram of Early Chick Embryo within the Shell

Lazzarini, Abel A.; Bellville, J. Weldon

doi:10.3181/00379727-93-22652

Cited by 9 publications

(2 citation statements)

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“…A considerable portion of that has been upon the embryonic heart, mainly on the origin of the heart beat and factors affecting it. One of these deals with a new method for taking electrocardiograms of the chick embryo within the shell (Lazzarini and Bellville, 1956). The effects of chronic vitamin E deficiency upon the electrocardiograms of adult chickens was reported by Sturkie, Singsen, Matterson, Kozeff and Jungherr (1954).…”

Section: Blood Pressurementioning

confidence: 97%

A Survey of Recent Advances in Poultry Physiology

Sturkie

1958

Poultry Science

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Section: Blood Pressurementioning

confidence: 97%

A Survey of Recent Advances in Poultry Physiology

Sturkie

1958

Poultry Science

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“…Progressive increase in the daily average heart rate (218 to 276 beats per minute) was observed from the third to the fifteenth day of incubation. Cohn and Wile (1925), Bogue (1932) and Lazzarini and Bellville (1956) implanted electrodes KIG. The embryonic movement was detected on the fourth day of incubation and increased throughout the incubation period.…”

Section: Introductionmentioning

confidence: 99%

The Photoelectric Plethysmography Technique for Recording Heart Rate in Chick Embryos

Soliman

Huston

1972

Poultry Science

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Simultaneous electrocardiograms and myograms of the isolated atrium, ventricle and conus of the embryonic chick heart

Paff¹,

Boucek²

1962

Anat. Rec.

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Recently Paff, Boucek and Murphy ('59) demonstrated a technique for recording the mechanical behavior of the early embryonic chick heart. Stimulated by the work of Wertheim-Salomonson, '13; Robb, '29; Lagan and Sampson, '32; Bogue, '33; Eyster, Krasno and Hettwer, '37; Hoff, Kramer, Dubois and Patten, '37; and Lazzarini and Bellville, '56, whose cumulative effort firmly established the fact that the adult type of electrocardiogram can be recorded in the embryonic chick heart before the third day of development, Boucek, Murphy and Paff ('59) developed a method for synchronizing the electrocardiogram with the myogram. The present work is an application of this expanded technique to the study of isolated chambers of the 72 hour embryonic chick heart. It is presented for three reasons: lst, nowhere in the literature can one find simultaneous recordings of myograms and electrocardiograms of the isolated atrium, ventricle and conus; 2nd, regarding the electrical activity, the records permit a dissection of the electrocardiogram to demonstrate characteristics of the three areas of the heart previously not seen; and 3rd, a comparison can be made between the electrical and mechanical properties of the chambers of the intact heart with those of the separated chambers. TECHNIQUEA 72 hour embryonic chick heart is isolated by transecting the conus and the great veins where they enter the sinus venosus. The heart is then planted in a drop of brittle blood plasma (old rooster) to which a trace of embryonic extract has been added. After clotting occurs it is transected cleanly at the atrioventricular and ventriculoconal junctions. Each of the three chambers, i.e., atrium, ventricle and conus are then spatially separated.Platinum electrodes are placed in position preparatory to recording the ECG and myogram simultaneously. With the aid of a microscope the exploring electrode is placed on the atrium (ventricle or conus) while the indifferent electrode is placed in the medium in which the heart is beating (figs.

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Method for Study of Electrocardiogram of Early Chick Embryo within the Shell

Cited by 9 publications

References 0 publications

A Survey of Recent Advances in Poultry Physiology

A Survey of Recent Advances in Poultry Physiology

The Photoelectric Plethysmography Technique for Recording Heart Rate in Chick Embryos

Simultaneous electrocardiograms and myograms of the isolated atrium, ventricle and conus of the embryonic chick heart

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