What should be called a brisk 'Y' descent?

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dc.contributor.authorDalvi, Ben_US
dc.contributor.authorKerkar, Pen_US
dc.contributor.authorVora, Aen_US
dc.contributor.authorSingh, Jen_US
dc.date.accessioned1992-10-01en_US
dc.date.accessioned2009-06-02T10:22:30Z
dc.date.available1992-10-01en_US
dc.date.available2009-06-02T10:22:30Z
dc.date.issued1992-10-01en_US
dc.description.abstractPatients with pericardial constriction show a prominent 'y' descent in right atrial and vena caval pressure traces. In all earlier hemodynamic descriptions of constrictive pericarditis, the 'y' descent has been described as 'brisk', 'sharp' or 'rapid' but no effort has been made to quantify the same. In this study, we have tried to objectively evaluate and describe this 'y' descent by measuring its negative slope (-dy/dt) at its steepest portion. Forty one patients were studied hemodynamically, 9 with constrictive pericarditis (Group I) and 32 normals (Group II). The negative slope of the 'y' descent in patients with constrictive pericarditis (69.95 +/- 23.04 mm Hg) was found to be significantly greater than normals (35.13 +/- 7.84 mm Hg, p < 10(-6). Discriminant analysis was used to determine its sensitivity, specificity, predictive value and overall accuracy, in the diagnosis of pericardial constriction. Value of > or = 45 mm Hg/sec was found to have the highest overall accuracy (0.88). The correlation between the right ventricular end diastolic pressure and the slope of 'y' descent in patients with pericardial constriction (r = 0.66) and in normals (r = 0.60) was fair. It is concluded that -dy/dt is significantly different in patients with constrictive pericarditis as compared to normals. The diagnostic utility of this parameter needs to be evaluated in patients with equivocal clinical and hemodynamic data, in those with occult pericardial constriction and in post-pericardiectomy cases where the pressures do not normalise immediately after adequate pericardial resection.en_US
dc.description.affiliationDept of Cardiology, KEM Hospital, Parel, Bombay, Maharashtra.en_US
dc.identifier.citationDalvi B, Kerkar P, Vora A, Singh J. What should be called a brisk 'Y' descent? Journal of Postgraduate Medicine. 1992 Oct-Dec; 38(4): 171-4en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/115477
dc.language.isoengen_US
dc.source.urihttps://www.jpgmonline.comen_US
dc.subject.meshAdulten_US
dc.subject.meshBias (Epidemiology)en_US
dc.subject.meshBlood Pressureen_US
dc.subject.meshDiagnosis, Differentialen_US
dc.subject.meshDiastoleen_US
dc.subject.meshDiscriminant Analysisen_US
dc.subject.meshHeart Catheterizationen_US
dc.subject.meshHemodynamicsen_US
dc.subject.meshHumansen_US
dc.subject.meshPericarditis, Constrictive --diagnosisen_US
dc.subject.meshRetrospective Studiesen_US
dc.subject.meshSensitivity and Specificityen_US
dc.titleWhat should be called a brisk 'Y' descent?en_US
dc.typeJournal Articleen_US
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