Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0232605 (regurgitation)
 8,217 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To assess the value of intraoperative transesophageal echocardiographical Doppler color flow imaging (TEE-DCFI) during cardiac valvular surgery, 85 consecutive patients with 102 diseased valves for surgery were studied with pre-and post-operative TEE-DCFI. There were 34 women and 51 men with an age range of 15 to 55 years (mean age, 34.91 +/- 9.33 years). The etiology of valve lesion was rheumatic in 57 (AV 10, MV 47), prolapse in 9 (AV 2, MV 7), endocarditis in 21 (AV 12, MV 3, PV 2, prosthetic infection 4), prosthetic dysfunction in 14 (AV 5, MV 9), congenital in 1 (TV). Preoperative TEE-DCFI findings were helpful either in completing with some new information or changing the operation plan in 29 valves (28.43%) including abscess at aortic root in 1, perforation of aortic valve in 2, perforation of mitral valve leaflets in 5 patients with aortic valvular endocarditis, regurgitation or perivalvular leak of prosthetic valve in 4 MVs and 4AVs, left atrial thrombus detected in 8 and excluded in 3 patients with MV disease, small calcified vegetation on PV with normal valve function in 2 patients with congenital heart disease. Postoperative TEE-DCFI evaluation was performed in 53 patients with 70 diseased valves. There was only one mild regurgitation of mitral bioprosthesis and one mild perivalvular leak of aortic prosthesis detected among 40 replaced prosthetic valves. Of 30 valves repaired 23 (77%) valves had trivial or mild residual regurgitation (Group A) and 7 (23%) had moderate residual regurgitation (Group B). Postoperative congestive heart failure was seen in 6 (26.09%) of Group A and 5 (71.43%) of Group B (P less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
Zhonghua Xin Xue Guan Bing Za Zhi 1990 Aug
PMID:[The value of using transesophageal echocardiographic Doppler color flow imaging in patients undergoing cardiac valvular surgery]. 208 76

To establish a noninvasive prediction of pulmonary vascular resistance (PVR), we combined continuous wave Doppler pressure gradient with pulsed Doppler volumetric flow methods for measuring mean pulmonary arterial pressure (mPAP) and pulmonary flow (QP) respectively and calculated PVR by the Poiseullie equation. Simultaneous invasive and noninvasive measurements were made beat to beat in 28 patients: 18 patients with patent ductus arteriosus (PDA), 10 with other heart diseases complicated with pulmonary regurgitation (PR). In the PR group, the peak of Doppler determined pressure gradient during diastole correlated well with mPAP measured via catheter, r = 0.99. In the PDA group, the Doppler determined mPAP (subtracts mean pressure gradient across PDA measured by the continuous wave Doppler from brachial artery blood pressure) correlated well with catheter, r = 0.98, Doppler determined QP and PVR also correlated well with catheter, r = 0.98 and 0.99. There were high linear correlations between the mPAP, QP, PVR in all patients by Doppler and catheter, r = 0.99, 0.98, 0.98, respectively. The results indicate that combined continuous wave and pulsed Doppler can predict mPAP, QP, and PVR dynamic indices for PDA and other heart diseases complicated with PR quite accurately.
Zhonghua Xin Xue Guan Bing Za Zhi 1990 Aug
PMID:[Estimation of pulmonary vascular resistance by Doppler echocardiography with simultaneous catheterization]. 208 79

To evaluate the accuracy of the pressure half-time (PHT) method in predicting the anatomical mitral valve area (Aa) in mitral stenosis, Doppler echocardiography was performed in 42 cases with mitral stenosis within 48 hours before mitral valve replacement. The diastolic mitral flow velocities were recorded by the continuous wave Doppler technique, and PHT and the derived mitral valve area (Ad) were measured by a computer system from the Doppler spectrum. Aa was measured from a photograph of the mitral valve excited en bloc at surgery. The comparison between Aa and Ad yielded a good correlation (r = 0.85). However, Ad significantly underestimated Aa (P less than 0.001) in cases with combined mitral stenosis and regurgitation, and significantly overestimated Aa in cases with combined mitral and aortic lesions. There was also a large scatter of data obtained by the two measurements (SEE = 0.41 cm2). It is concluded that the PHT method can predict Aa in isolated mitral stenosis with an acceptable accuracy but is of only limited value in combined mitral stenosis and regurgitation or combined mitral and aortic valve lesions.
Zhonghua Xin Xue Guan Bing Za Zhi 1990 Aug
PMID:[Value and limitations of the pressure halftime method for quantitating the mitral valve area in mitral stenosis]. 208 80

Prosthetic valvular regurgitation was evaluated by color Doppler echocardiography in 107 patients with prostheses. Regurgitant jets were detected in 37 (35%) prostheses, 76% of them were transvalvular and 24% of them were perivalvular. The ratio of bioprostheses with increased intensity and transvalvular regurgitant jets increased parallel to the duration after replacement. Of those bioprostheses replaced more than 6 years, 23% developed regurgitation with a higher degree. Transvalvular regurgitation was detected in 25% of St. Jude Medical prostheses recently replaced, but the degree was low.
Zhonghua Xin Xue Guan Bing Za Zhi 1990 Feb
PMID:[Evaluation of prosthetic valvular regurgitation by color Doppler echocardiography]. 239 89

Continuous wave Doppler echocardiographic study was performed almost simultaneously with right heart catheterization in 24 patients with a variety of cardiovascular disorders and evidence of pulmonary regurgitation detected by pulsed wave Doppler. Their pulmonary arterial diastolic and mean pressure (PADP and PAMP) measured during catheterization were ranging from 5 to 70.6 (mean 30.26 +/- 18) mmHg and from 6.7 to 91.14 (mean 42.41 +/- 23.23) mmHg, respectively. The right ventricular end-diastolic pressure was within normal limit in all but one. The peak, mean and end-diastolic pressure gradients of pulmonary regurgitation (PPRPG, MPRPG and PRPGed) were calculated using simplified Bernoulli Equation and their correlations with PADP and PAMP were analysed using linear regression method. There were close correlations between all PRPGs and PADP or PAMP (r = 0.85 - 0.94, P less than 0.0001). The best equation for assessing PADP was MPRPG + 6 mmHg (r = 0.94, P less than 0.0001), for PAMP was PPRPG + 8 mmHg (r = 0.92, P less than 0.0001). It is evident that those constants in the equations should be adjusted in individual patient who has coexisting right heart failure.
Zhonghua Xin Xue Guan Bing Za Zhi 1989 Feb
PMID:[Quantitative assessment of pulmonary arterial diastolic and mean pressure using continuous wave Doppler]. 276 42