What's the difference between coarctation and stenosis?
Coarctation
Definition:
(n.) Confinement to a narrow space.
(n.) Pressure; that which presses.
(n.) A stricture or narrowing, as of a canal, cavity, or orifice.
Example Sentences:
(1) Comparison of developmental series of D. merriami and T. bottae revealed that the decline of the artery in the latter species is preceded by a greater degree of arterial coarctation, or narrowing, as it passes though the developing stapes.
(2) After early repair of congenital cardiovascular defects, such as coarctation of the aorta, late stenosis may become a problem.
(3) Long prosthetic graft was anastomosed in an end-to-side fashion to bypass the coarctated aorta.
(4) Twenty-four patients had uncomplicated ventricular septal defect, 2 had single ventricle, 5 had transposition of the great arteries, 5 had atrioventricular canal defects, and 2 had coarctation of the aorta and ventricular septal defect.
(5) Acute aortic dissection, aortic aneurysm formation and aortic valve disease complicate the surgical treatment of adult coarctation and hypertension may persist in as many as 50% of patients.
(6) The diagnosis based on physical ECG and X-rays was correct in only 42% of cases, and was most accurate in children with transposition of the great arteries, syndrome of Fallot, coarctation of the aorta and ventricular septal defects.
(7) The principal long-term complication is recurrence of the coarctation resulting from the absence of growth at the anastomosis.
(8) In the seven remaining patients, coarctation was excluded.
(9) Associated lesions were coarctation (n = 2) and patent ductus arteriosus (n = 2).
(10) In the remainder a wide spectrum of abnormalities was found such as prolapse of the mitral valve (in 13.6%), bicuspid aortal valve with a medium regurgitation (4.5%), hypoplasia of the coronary cusp of the aortal valve (4.5%), dilatation of the ascending aorta with a residual significant stenosis at the site after operation of coarctation of the thoracic aorta (4.5%), subaortal defect of the interventricular septum (4.5%) and slight left ventricular hypertrophy in patients with arterial hypertension (9.1%).
(11) We report an unusual case of association of aortic coarctation with a calcified thrombus at the site of coarctation.
(12) These were estimated 1. for stepwise aortic coarctation and 2. for aortic nerve stimulation under pressure clamp conditions.
(13) Five cases of coarctation were overlooked on the prenatal echocardiogram but these were found at follow up of the infants.
(14) Through our experience and a review, we have observed that neonates requiring coarctation repair, pulmonary artery banding, and patent ductus ligation are at high risk of expiring before reaching an age at which a difficult total repair is feasible.
(15) Values were expressed as the ratio between the kidney with the lower uptake and the contralateral one in 34 patients and as the ratio of the kidney counts to the injected dose in five patients with solitary kidneys, aortic coarctation, or both.
(16) An unusual post-coarctation mycotic aortic aneurysm that had eroded into the left main stem bronchus was identified and replaced with a Dacron graft.
(17) The post-mortem examination showed a lesion of the intima and media at the coarctation site, and it seemed that the adventitia alone was what prevented rupture of the vessel.
(18) In addition, aortic disorders such as acute dissection, coarctation and atherosclerotic disease could be delineated.
(19) Few data exist which address the significance of the Doppler gradient across a residual narrowing in older children who have had a coarctation repaired.
(20) The authors studied the immediate and late-term results of surgical treatment of aortic coarctation in patients after the age of 35 years.
Stenosis
Definition:
(n.) A narrowing of the opening or hollow of any passage, tube, or orifice; as, stenosis of the pylorus. It differs from stricture in being applied especially to diffused rather than localized contractions, and in always indicating an origin organic and not spasmodic.
Example Sentences:
(1) Graft life is even more prolonged with patch angioplasty at venous outflow stenoses or by adding a new segment of PTFE to bypass areas of venous stenosis.
(2) An axillo-axillary bypass procedure was performed in a high-risk patient with innominate arterial stenosis who had repeated episodes of transient cerebral ischemia due to decreased blood flow through the right carotid artery and reversal of blood flow through the right vertebral artery.
(3) In particular, inflammatory reaction was significantly more frequent and severe in ischemic groups than in controls, independent of the degree of coronary stenosis.
(4) None of the children in the study showed clinical symptoms of acquired subglottic stenosis before discharge from hospital, and none has been readmitted for this condition subsequently.
(5) The sensitivity of SPECT for detection of overall coronary stenosis was 79%, contrary that of treadmill exercise test was only 33% (p < 0.001).
(6) A study of the time-course of the response during aortic stenosis of 30 min duration showed early release of renin from the innervated kidney at a time (5 min) when little release occurred from the denervated one.
(7) A clear association between ischaemic heart disease, carotid artery stenosis and femoropopliteal disease was found.
(8) After early repair of congenital cardiovascular defects, such as coarctation of the aorta, late stenosis may become a problem.
(9) Autopsy revealed serious somatic diseases (stenosis of the ileum in two cases and brain tumor in one); their symptoms had been largely overlapped by those of anorexia nervosa.
(10) To evaluate the relationship between the motion pattern and degree of organic change of the anterior mitral leaflet (AML) and the features of the mitral component of the first heart sound (M1) or the opening snap (OS), 37 patients with mitral stenosis (MS) were studied by auscultation, phonocardiography and echocardiography.
(11) A patient with mitral stenosis and atrial flutter was found to have a normal diastolic closure rate (E to F slope).
(12) Even if it does not always provide the solution to a particularly delicate problem, which is often of vital importance, it provides data which, modifiable and better used, should provide an adequate notion of the anatomical and physiopathological state in aortic stenosis.
(13) Four clinical cases of subaortic hypertrophic muscular stenosis are discussed.
(14) The plasma renin activity of the 1 day post-stenosis rats showed 65% higher activity than the sham controls with no significant change in the 30-60 days post-stenosis.
(15) Our results show that stenosis of about one-third of the original external diameter of the artery and vein of the pedicle in our model did not have any significant influence on the survival of the flap and ligation of the femoral artery distal to the branch to the flap did not produce any statistical difference in the viability of the flap.
(16) A velocity ratio of less than or equal to 0.25 alone was sensitive (92%) in detecting severe aortic stenosis.
(17) Follow-up studies using radiological methods show worse results (recurrent stones in II: 21.2%, in I: 5.8%, stenosis of EST in II: 6.1%, in I: 3.1%): Late results of EST because of papillary stenosis are still worse compared to those of choledocholithiasis.
(18) Striking features were non-atherosclerotic stenosis with negative Sudan III, seen in the ICA less than 200 mu in diameter of almost all the hearts of stages II and III rabbits.
(19) The concomitant reduction in aortic pressure and increase in heart rate following total occlusion of the portal vein were most pronounced during the first weeks after stenosis, and were probably due to diminished venous return to the heart.
(20) The average size of stenosis after dilation was 32%.