Value of a modified continuity equation method to quantify mitral valve area in patients with mitral stenosis and sinus rhythm

1991 ◽  
Vol 69 (20) ◽  
pp. 924-929 ◽  
Author(s):  
W. Voelker ◽  
B. Regele ◽  
H. Dittmann ◽  
M. Schmid ◽  
M. Mauser ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Sinus Rhythm ◽  
Mitral Stenosis ◽  
Continuity Equation ◽  
Equation Method ◽  
Mitral Valve Area ◽  
Valve Area

scholarly journals Mitral Leaflet Separation Index in Assessing the Severity of Mitral Stenosis

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Joby K. Thomas ◽  
T. M. Anoop ◽  
Gailin B. Sebastian ◽  
Kim George ◽  
Raju George
Keyword(s):  
Atrial Fibrillation ◽  
Mitral Valve ◽  
Mitral Stenosis ◽  
Continuity Equation ◽  
Half Time ◽  
Mitral Leaflet ◽  
Proximal Isovelocity Surface Area ◽  
Mitral Valve Area ◽  
Surrogate Measure ◽  
Valve Area

Determining the severity of mitral stenosis (MS) is important for both prognostic and therapeutic reasons. The mitral valve area (MVA) can be measured by planimetry, pressure half-time, continuity equation, and proximal isovelocity surface area methods. In this study, we propose a novel yet simple, independent measure of MS severity–the mitral leaflet separation (MLS) index. This new index could be a useful surrogate measure of the MVA. This index would also help when there is a discrepancy between severities of MS estimated by existing methods, in the presence of atrial fibrillation and in the presence of mitral regurgitation.

scholarly journals Mid-term (up to 12 years) clinical and echocardiographic outcomes of percutaneous transvenous mitral commissurotomy in patients with rheumatic mitral stenosis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yahya Dadjo ◽  
Maryam Moshkani Farahani ◽  
Reza Nowshad ◽  
Mohsen Sadeghi Ghahrodi ◽  
Alireza Moaref ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Mitral Stenosis ◽  
Protective Factor ◽  
Cardiac Events ◽  
Mitral Valve Area ◽  
Adverse Cardiac Events ◽  
Percutaneous Transvenous Mitral Commissurotomy ◽  
Mitral Commissurotomy ◽  
Valve Area

Abstract Background Rheumatic heart disease (RHD) is still a concerning issue in developing countries. Among delayed RHD presentations, rheumatic mitral valve stenosis (MS) remains a prevalent finding. Percutaneous transvenous mitral commissurotomy (PTMC) is the intervention of choice for severe mitral stenosis (MS). We aimed to assess the mid-term outcome of PTMC in patients with immediate success. Methods In this retrospective cohort study, out of 220 patients who had undergone successful PTMC between 2006 and 2018, the clinical course of 186 patients could be successfully followed. Cardiac-related death, undergoing a second PTMC or mitral valve replacement (MVR) were considered adverse cardiac events for the purpose of this study. In order to find significant factors related to adverse cardiac outcomes, peri-procedural data for the studied patients were collected.The patients were also contacted to find out their current clinical status and whether they had continued secondary antibiotic prophylaxis regimen or not. Those who had not suffered from the adverse cardiac events were additionally asked to undergo echocardiographic imaging, in order to assess the prevalence of mitral valve restenosis, defined as mitral valve area (MVA) < 1.5 cm2 and loss of ≥ 50% of initial area gain. Results During the mean follow-up time of 5.69 ± 3.24 years, 31 patients (16.6% of patients) had suffered from adverse cardiac events. Atrial fibrillation rhythm (p = 0.003, HR = 3.659), Wilkins echocardiographic score > 8 (p = 0.028, HR = 2.320) and higher pre-procedural systolic pulmonary arterial pressure (p = 0.021, HR = 1.031) were three independent predictors of adverse events and immediate post-PTMC mitral valve area (IMVA) ≥ 2 cm2 (p < 0.001, HR = 0.06) was the significant predictor of event-free outcome. Additionally, follow-up echocardiographic imaging detected mitral restenosis in 44 patients (23.6% of all patients). The only statistically significant protective factor against restenosis was again IMVA ≥ 2 cm2 (p = 0.001, OR = 0.240). Conclusion The mid-term results of PTMC are multifactorial and may be influenced by heterogeneous peri-procedural determinants. IMVA had a great impact on the long-term success of this procedure. Continuing secondary antibiotic prophylaxis was not a protective factor against adverse cardiac events in this study. (clinicaltrial.gov registration: NCT04112108).

Two-dimensional transesophageal echocardiographic determination of mitral valve area in adults with mitral stenosis

1994 ◽  
Vol 127 (5) ◽  
pp. 1348-1353 ◽  
Author(s):  
Marcus F Stoddard ◽  
Charles R Prince ◽  
Nasar M Ammash ◽  
John L Goad
Keyword(s):  
Mitral Valve ◽  
Mitral Stenosis ◽  
Two Dimensional ◽  
Mitral Valve Area ◽  
Valve Area

Closed Mitral Valvotomy for Mitral Stenosis in Mirror Image Dextrocardia

1995 ◽  
Vol 3 (2) ◽  
pp. 75-77 ◽  
Author(s):  
Gutti Ramasubrahmanyam ◽  
Dronamraju Dilip ◽  
Pirovam Venkat Ramnarayan ◽  
Raju Subramaniam Iyer ◽  
Kothapalle Venugopal Naidu
Keyword(s):  
Mitral Valve ◽  
Surgical Approach ◽  
Mitral Stenosis ◽  
Mirror Image ◽  
Abnormal Position ◽  
Mitral Valve Area ◽  
Anterolateral Thoracotomy ◽  
Mitral Valvotomy ◽  
Valve Area

A 22-year-old female with mirror image dextrocardia and rheumatic valvular mitral stenosis underwent closed mitral valvotomy using a Tubb's dilator with good results. Despite abnormal position of situs, the surgical approach was simple through right anterolateral thoracotomy, and the operator's hands were mirror image to that of levocardia valvotomy in certain steps. Preoperative mitral valve area was 0.8 cm2, and peak and mean diastolic gradients were 21 and 15 mmHg respectively. Postoperatively, valve area improved to 2.16 cm2, and peak and mean diastolic gradients were 8 and 3.1 mmHg, respectively.

Development of Mitral Stenosis After Mitral Valve Repair: Importance of Mitral Valve Area

2017 ◽  
Vol 33 (12) ◽  
pp. 1701-1707 ◽  
Author(s):  
Kwan Leung Chan ◽  
Shin-Yee Chen ◽  
Thierry Mesana ◽  
Buu Khanh Lam
Keyword(s):  
Mitral Valve ◽  
Mitral Valve Repair ◽  
Mitral Stenosis ◽  
Valve Repair ◽  
Mitral Valve Area ◽  
Valve Area

Estimation of mitral valve area from regression analysis of the pressure gradient in mitral stenosis

1992 ◽  
Vol 69 (12) ◽  
pp. 1050-1055
Author(s):  
John A. Bittl ◽  
Alan C. Yeung ◽  
Vladimir Vekshtein ◽  
John D. Parker ◽  
R.David Fish
Keyword(s):  
Regression Analysis ◽  
Mitral Valve ◽  
Pressure Gradient ◽  
Mitral Stenosis ◽  
Mitral Valve Area ◽  
Valve Area

Application of the Vena contracta Method for the Calculation of the Mitral Valve Area in Mitral Stenosis

Cardiology ◽  
2002 ◽  
Vol 98 (1-2) ◽  
pp. 50-59 ◽  
Author(s):  
Adnan Abacı ◽  
Abdurrahman Oguzhan ◽  
Şükrü Ünal ◽  
Burhanettin Kıranatlı ◽  
Namık Kemal Eryol ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Mitral Stenosis ◽  
Vena Contracta ◽  
Mitral Valve Area ◽  
Valve Area
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