diastasis

diastasis /di·as·ta·sis/ (di-as´tah-sis)

1. dislocation or separation of two normally attached bones between which there is no true joint. Also, separation beyond the normal between associated bones, as between the ribs.

2. a relatively quiescent period of slow ventricular filling during the cardiac cycle, occurring just prior to atrial systole.

Diastasis of the pubic symphysis.

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di·as·ta·sis (d-st-ss)

n.

1. Separation of normally joined parts, such as the separation of certain abdominal muscles during pregnancy. Also called divarication.

2. The last stage of diastole in the heart, occurring just before contraction and during which little additional blood enters the ventricle.

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diastasis

[dī·as′təsis]

Etymology: Gk, separation

the forcible separation of two parts that are normally joined, such as parts of a bone at an epiphysis, two bones that lack a synovial joint, or two muscles, as in diastasis recti abdominis.

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diastasis [di-as´tah-sis]

1. dislocation or separation of two normally attached bones between which there is no true joint. See illustration.

Diastasis of the pubic symphysis. From Dorland's, 2000.

2. an abnormally large separation between associated bones, as between the ribs.

3. the rest period of the cardiac cycle, occurring just before systole. Called also diastasis cordis.

diastasis rec´ti abdo´minis separation of the rectus muscles of the abdominal wall, sometimes occurring during pregnancy.

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diastasis

1. dislocation or separation of two normally attached bones between which there is no true joint. Also, an abnormally large separation between associated bones, as between the ribs.

2. diastasis cordis, the rest period of the cardiac cycle, occurring just before systole.