scholarly journals Acute normovolemic hemodilution for a patient with secondary polycythemia undergoing aortic valve replacement due to severe aortic stenosis - A case report -

2020 ◽  
Vol 15 (2) ◽  
pp. 181-186
Author(s):  
Ilsang Han ◽  
Young Woo Cho ◽  
Soon Eun Park ◽  
Min Gi An ◽  
Ho June Kang ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Aortic Valve Replacement ◽  
Valve Replacement ◽  
Severe Aortic Stenosis ◽  
Hematocrit Level ◽  
Acute Normovolemic Hemodilution ◽  
Increased Risk ◽  
Normovolemic Hemodilution ◽  
Secondary Polycythemia

Background: A high hematocrit level in patients with erythrocytosis is linked with increased blood viscosity and increased risk of thromboembolism. Therefore, it is necessary to adequately lower the hematocrit level before performing a high-risk surgery. Case: A 67-year-old man was scheduled for aortic valve replacement due to severe aortic stenosis. The preoperative hematocrit level of this patient was very high due to secondary polycythemia by hypoxia. We decided to perform acute normovolemic hemodilution after anesthetic induction to reduce the risk of thromboembolism in the patient. The patient was discharged after a successful surgery and a post-operative period without any side effects.Conclusions: We estimate that patients with secondary polycythemia may benefit from acute normovolemic hemodilution to reduce their hematocrit levels while undergoing cardiac surgery using cardiopulmonary bypass. However, it is necessary to control the hematocrit level, since a significant decrease can cause side effects.

Asymptomatic Severe Aortic Stenosis and Noncardiac Surgery

2020 ◽  
pp. 108925322096957
Author(s):  
Stephanie K. Whitener ◽  
Loren R. Francis ◽  
Jeffrey D. McMurray ◽  
George B. Whitener
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Aortic Valve Replacement ◽  
Valve Replacement ◽  
Severe Aortic Stenosis ◽  
Noncardiac Surgery ◽  
Surgical Aortic Valve Replacement ◽  
Unique Challenge ◽  
Surgical Risk ◽  
Increased Risk

The patient with severe asymptomatic aortic stenosis presenting for elective noncardiac surgery poses a unique challenge. These patients are not traditionally offered surgical aortic valve replacement or transcatheter aortic valve replacement given their lack of symptoms; however, they are at increased risk for postsurgical complications given the severity of their aortic stenosis. The decision to proceed with elective noncardiac surgery should be based on individual and surgical risk factors. However, severity of aortic stenosis is not accounted for in current surgical risk factor assessment scoring; therefore, extensive communication with patients and surgical teams is necessary to minimize a patient’s risk. A clear intraoperative plan should be designed to manage the unique hemodynamics of these patients, and a discussion should address postoperative placement.

scholarly journals Aortic valve function post-replacement of severe aortic stenosis by transcatheter procedure versus surgery: a systematic review and metanalysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Charbel Abi Khalil ◽  
Barbara Ignatiuk ◽  
Guliz Erdem ◽  
Hiam Chemaitelly ◽  
Fabio Barilli ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Aortic Valve Replacement ◽  
Valve Replacement ◽  
Randomized Clinical Trials ◽  
Severe Aortic Stenosis ◽  
Paravalvular Leak ◽  
Effective Orifice Area ◽  
Surgical Aortic Valve Replacement ◽  
Transcatheter Heart Valve

AbstractTranscatheter aortic valve replacement (TAVR) has shown to reduce mortality compared to surgical aortic valve replacement (sAVR). However, it is unknown which procedure is associated with better post-procedural valvular function. We conducted a meta-analysis of randomized clinical trials that compared TAVR to sAVR for at least 2 years. The primary outcome was post-procedural patient-prosthesis-mismatch (PPM). Secondary outcomes were post-procedural and 2-year: effective orifice area (EOA), paravalvular gradient (PVG) and moderate/severe paravalvular leak (PVL). We identified 6 trials with a total of 7022 participants with severe aortic stenosis. TAVR was associated with 37% (95% CI [0.51–0.78) mean RR reduction of post-procedural PPM, a decrease that was not affected by the surgical risk at inclusion, neither by the transcatheter heart valve system. Postprocedural changes in gradient and EOA were also in favor of TAVR as there was a pooled mean difference decrease of 0.56 (95% CI [0.73–0.38]) in gradient and an increase of 0.47 (95% CI [0.38–0.56]) in EOA. Additionally, self-expandable valves were associated with a higher decrease in gradient than balloon ones (beta = 0.38; 95% CI [0.12–0.64]). However, TAVR was associated with a higher risk of moderate/severe PVL (pooled RR: 9.54, 95% CI [5.53–16.46]). All results were sustainable at 2 years.

Regression of left ventricular mass one year after aortic valve replacement for pure severe aortic stenosis

2002 ◽  
Vol 89 (4) ◽  
pp. 408-413 ◽  
Author(s):  
Harald P Kühl ◽  
Andreas Franke ◽  
David Puschmann ◽  
Friedrich A Schöndube ◽  
Rainer Hoffmann ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Aortic Valve Replacement ◽  
Left Ventricular Mass ◽  
Valve Replacement ◽  
Severe Aortic Stenosis ◽  
Left Ventricular ◽  
Ventricular Mass ◽  
One Year
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