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Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
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IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
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The nursing management of Mitral Valve Prolapse, or MVP, centers around patient education, symptom monitoring, and lifestyle modifications.Patient Education on MVP Diagnosis and Heredity: Nurses should provide comprehensive education about MVP, a condition where the mitral valve does not close appropriately during heartbeats. This education often includes the condition's pathophysiology, symptoms, and potential complications, like arrhythmias or mitral regurgitation. Though not fully...
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Affect plays a crucial role in shaping interpersonal evaluations and perceptions. Emotions influence how individuals judge and respond to others, often determining whether interactions are viewed positively or negatively. This effect can manifest directly through interactions with the person in question or indirectly via associations with unrelated emotional experiences.Direct Effects of Affect on AttractionAffect directly influences interpersonal attraction when a person’s behavior...
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Updated: Feb 12, 2026

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
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How does rewarming temperature affect bleeding after mitral valve repair?

Yu-Hua Cheng1,2, Yun-Fei Han3, Jian-Wen Zeng3

  • 1Department of Anesthesiology, Wuhan Asia Heart Hospital, Wuhan, China.

Perfusion
|February 11, 2026
PubMed
Summary
This summary is machine-generated.

Rewarming temperature did not significantly impact bleeding after mitral valve repair. However, platelet levels interacted with rewarming, affecting drainage, suggesting tailored rewarming strategies are needed.

Keywords:
cardiopulmonary bypasscooling temperaturemitral valve repairpostoperative bleedingrewarming temperaturetransfusion

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Area of Science:

  • Cardiovascular Surgery
  • Anesthesiology
  • Hematology

Background:

  • Postoperative bleeding is a significant concern following cardiac surgery.
  • Evidence is limited regarding the influence of rewarming temperature during cardiopulmonary bypass (CPB) on bleeding outcomes.
  • Mitral valve repair is a common cardiac procedure where bleeding management is crucial.

Purpose of the Study:

  • To investigate the association between rewarming temperature and postoperative bleeding after mitral valve repair.
  • To identify factors influencing chest drainage volume in patients undergoing mitral valve repair.
  • To explore the interaction between rewarming temperature and preoperative platelet levels on bleeding.

Main Methods:

  • Analysis of clinical, anesthesia, and CPB data from 379 adult patients undergoing isolated mitral regurgitation repair.
  • Categorization of patients into low, medium, and high preoperative platelet count groups.
  • Definition of a "rewarming/cooling ratio" to quantify rewarming intensity.
  • Application of general linear models to assess factors associated with 24-hour chest drainage volume.

Main Results:

  • Rewarming temperature was not found to be an independent factor significantly associated with 24-hour chest drainage.
  • Gender, platelet count, fibrinogen levels, and chest incision were identified as significant predictors of postoperative bleeding.
  • A significant interaction was observed between platelet levels and the rewarming/cooling ratio, influencing drainage volumes differently across platelet groups.

Conclusions:

  • Postoperative bleeding after mitral valve repair is primarily influenced by patient-specific factors like gender, platelet count, and fibrinogen, rather than rewarming temperature alone.
  • The effect of rewarming temperature on bleeding is modulated by preoperative platelet levels.
  • Avoiding excessive cooling during CPB and maintaining rewarming temperatures within optimal ranges is recommended.