defect (redirected from septal defect)

defect /de·fect/ (de´fekt) an imperfection, failure, or absence.defec´tive

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acquired defect  a non-genetic imperfection arising secondarily, after birth.

aortic septal defect  a congenital anomaly in which there is abnormal communication between the ascending aorta and pulmonary artery just above the semilunar valves.

atrial septal defects , atrioseptal defects congenital anomalies in which there is persistent patency of the atrial septum, owing to failure of the ostium primum or ostium secundum.

Atrial septal defects; cutaway composite view showing possible locations of ostium primum and secundum defects in the right atrium.

birth defect  one present at birth, whether a morphological defect (dysmorphism) or an inborn error of metabolism.

congenital defect  birth d.

congenital ectodermal defect  anhidrotic ectodermal dysplasia.

cortical defect  a benign, symptomless, circumscribed rarefaction of cortical bone, detected radiographically.

endocardial cushion defects  a spectrum of septal defects resulting from imperfect fusion of the endocardial cushions, and ranging from persistent ostium primum to persistent common atrioventricular canal; see atrial septal d. and atrioventricularis communis.

fibrous cortical defect  a small, asymptomatic, osteolytic, fibrous lesion occurring within the bone cortex, particularly in the metaphyseal region of long bones in childhood.

filling defect  any localized defect in the contour of the stomach, duodenum, or intestine, as seen in the radiograph after a barium enema.

genetic defect  see under disease.

luteal phase defect  inadequate secretory transformation of the endometrium during the luteal phase of the menstrual cycle; it can cause habitual abortion.

metaphyseal fibrous defect 

1. fibrous cortical d.

2. nonossifying fibroma.

neural tube defect  a developmental anomaly of failure of closure of the neural tube, resulting in conditions such as anencephaly or spina bifida.

retention defect  a defect in the power of recalling or remembering names, numbers, or events.

septal defect  a defect in a cardiac septum resulting in an abnormal communication between the opposite chambers of the heart.

ventricular septal defect  a congenital cardiac anomaly in which there is persistent patency of the ventricular septum in either the muscular or fibrous portions, most often due to failure of the bulbar septum to completely close the interventricular foramen.

Abnormal communication between the ventricles in ventricular septal defect.

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de·fect (dfkt, d-fkt)

n.

A lack of or abnormality in something necessary for normal functioning; a deficiency or imperfection.

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defect,

n 1. congenital anomaly in structure or function that may or may not be life-threatening.
2. failure of a product to meet a reasonable expectation of performance and safety to the consumer.

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defect,

n 1. the absence of some legal requisite.
2. an imperfection.

defect, atrial septal,

n a congenital defect in the heart that is often present from birth. It is sometimes referred to as a “hole” in the heart and is caused by the unsuccessful closure of the septum between the atria of the heart. The failure of the septum to close properly leaves a hole between the right and left atria.

defect, operative,

n the incomplete repair of bone after root resection or periapical curettage.

defect, osseous,

n a concavity in the bone surrounding one or more teeth, resulting from periodontal disease.

defect, speech,

n deviation of speech that is outside the range of acceptable variation in a given environment.

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defect

an imperfection, failure or absence.

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filling defect

an interruption in the contour of the inner surface of viscus revealed by contrast radiography, indicating excess tissue or substance on or in the wall of the organ, foreign body or other space-occupying lesions.

negative defect

in neurology, a movement that cannot be performed, such as in paresis or paralysis.

positive defect

in neurology, an involuntary movement, such as tremors, abnormal posture or seizures.

septal defect

a defect in the cardiac septum resulting in an abnormal communication between opposite chambers of the heart. See also aortic septal defect, atrial septal defect and ventricular septal defect.