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ICU REACH
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Registrace 14. 01. 2018
ICU REACH is a platform that provides a space for critical care professionals to connect and enhance their learning. As a dedicated community, we are committed to ensuring that our critical care professional members have access to the latest information and resources. To achieve this, we offer a variety of tools and resources such as webinars, blogs, courses, a file-share library, and much more. Please visit www.icureach.com
Stroke Volume and Pressure-volume Boxes
In this video, we’ll delve into the intricacies of stroke volume and the use of pressure-volume (PV) boxes to simplify our understanding of cardiac function. Stroke volume is the amount of blood pumped by the left ventricle with each heartbeat, calculated by subtracting the end-systolic volume from the end-diastolic volume. We’ll explore the PV loop, a graphical representation of the changes in pressure and volume in the left ventricle during a cardiac cycle, highlighting its phases: isovolumetric contraction, ejection, isovolumetric relaxation, and filling. The area within this loop, known as stroke work, represents the heart's effort to eject blood.
PV boxes come into play as a simplified method to approximate the PV loop. By converting the complex loop into a rectangular shape, the PV box makes it easier to visualize and calculate stroke work. The height of the box represents the end-systolic pressure, while the width denotes the stroke volume. Although there are slight differences between the actual loop and the box, the overall areas are close enough for practical purposes. We’ll also discuss how changes in contractility, arterial elastance, and preload can alter the size and shape of the PV box, reflecting variations in cardiac function.
Join us as we break down these essential concepts, providing a clear and concise understanding of how the heart pumps blood and how these measurements are used in clinical practice.
#StrokeVolume #PressureVolumeLoop #PVLoop #CardiacFunction #HeartPhysiology #StrokeWork #PVBox #CardiologyBasics #MedicalEducation #CardiacCycle #ESPVR #EDPVR #ArterialElastance #Preload #Contractility #MedicalStudents #HealthcareProfessionals #CardiacMechanics #CardiacOutput #HeartFunction #ClinicalPractice
PV boxes come into play as a simplified method to approximate the PV loop. By converting the complex loop into a rectangular shape, the PV box makes it easier to visualize and calculate stroke work. The height of the box represents the end-systolic pressure, while the width denotes the stroke volume. Although there are slight differences between the actual loop and the box, the overall areas are close enough for practical purposes. We’ll also discuss how changes in contractility, arterial elastance, and preload can alter the size and shape of the PV box, reflecting variations in cardiac function.
Join us as we break down these essential concepts, providing a clear and concise understanding of how the heart pumps blood and how these measurements are used in clinical practice.
#StrokeVolume #PressureVolumeLoop #PVLoop #CardiacFunction #HeartPhysiology #StrokeWork #PVBox #CardiologyBasics #MedicalEducation #CardiacCycle #ESPVR #EDPVR #ArterialElastance #Preload #Contractility #MedicalStudents #HealthcareProfessionals #CardiacMechanics #CardiacOutput #HeartFunction #ClinicalPractice
zhlédnutí: 123
Video
Understanding the Effects of Preload on Arterial Elastance in the LV Pressure-Volume Loop
zhlédnutí 175Před 14 hodinami
In this video, we dive deep into the crucial cardiovascular concepts of preload and arterial elastance and their impact on the left ventricular (LV) pressure-volume loop. You will learn about the fundamentals of the LV pressure-volume loop, the definition and significance of preload, how increased preload affects the LV pressure-volume loop, what arterial elastance (Ea) is and how it is calcula...
Understanding Arterial Elastance from the Left Ventricular Pressure-Volume Loop
zhlédnutí 132Před 19 hodinami
Arterial elastance (Ea) is a key parameter that helps us understand the afterload faced by the heart, and it plays a crucial role in assessing cardiovascular health. We'll explain the relationship between arterial elastance and the left ventricular pressure-volume loop, using clear visuals and easy-to-follow explanations. You'll learn how the formula ΔP = Q x R (change in pressure equals blood ...
Contractility and Stroke Volume on Left Ventricular Pressure Volume Loop
zhlédnutí 78Před 21 hodinou
In this video, we explore the concept of cardiac contractility and the End-Systolic Pressure-Volume Relationship (ESPVR). Contractility refers to the heart muscle's intrinsic ability to contract and is influenced by various factors including the autonomic nervous system, hormones, and drugs. The ESPVR is a crucial graphical representation that shows the relationship between end-systolic pressur...
What is Afterload?
zhlédnutí 180Před 14 dny
This video provides an in-depth yet accessible explanation of the concept of afterload in cardiac physiology. Starting with a basic overview of the pressure-volume loop, the video visually illustrates key components like the end-diastolic and end-systolic pressure-volume relationships. It then delves into the definition of afterload as left ventricular wall stress during ejection, highlighting ...
What is the End-diastolic Pressure Volume Relationship (EDPVR)
zhlédnutí 196Před 14 dny
the end-diastolic pressure-volume curve helps us understand the relationship between blood volume and pressure in the left ventricle at the end of diastole. By halting the heart, adjusting the volume, measuring the pressure, and plotting these points, we can generate a curve that provides valuable insights into heart function.
What is the End-Systolic Pressure-Volume Relationship (ESPVR)?
zhlédnutí 210Před měsícem
The End-Systolic Pressure-Volume Relationship (ESPVR) is a crucial concept in understanding cardiac function. It represents the relationship between the pressure in the left ventricle and the volume of blood in it when the heart is fully contracted, which is the end of the systolic phase of the cardiac cycle
Left Ventricular Pressure Volume Loop
zhlédnutí 244Před měsícem
The volume-pressure loop of the heart, also known as the left ventricular pressure-volume loop, is a graphical representation of the relationship between the pressure and volume in the left ventricle during one cardiac cycle. It is divided into several distinct phases that illustrate the mechanical function of the heart. The first phase, isovolumetric contraction, begins with the closure of the...
What is Preload?
zhlédnutí 367Před měsícem
A debate exists over whether end-diastolic pressure or end-diastolic volume should be used as the indicator of preload. While both are critical factors, relying solely on pressure or volume does not provide a complete picture. Pressure can vary significantly with changes in ventricular compliance, while volume alone does not account for the actual stress experienced by the ventricular wall. In ...
مقاربة باثوفيزيولوجية للصدمة وانخفاض الضغط الشرياني
zhlédnutí 304Před měsícem
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مقاربة منهجية لحالات صمة رئوية في العناية المركزة
zhlédnutí 518Před 5 měsíci
مقاربة منهجية لحالات صمة رئوية في العناية المركزة
Sleep Disruption & Promotion in the ICU
zhlédnutí 370Před 6 měsíci
Sleep Disruption & Promotion in the ICU
Early Progressive Mobility in the ICU
zhlédnutí 353Před 6 měsíci
Early Progressive Mobility in the ICU
ICU Delirium Definition, Etiology, and Outcomes
zhlédnutí 977Před 6 měsíci
ICU Delirium Definition, Etiology, and Outcomes
Non-pharmacological Interventions in the Management of Pain in the ICU
zhlédnutí 541Před 7 měsíci
Non-pharmacological Interventions in the Management of Pain in the ICU
Pharmacologic Management of Pain in the ICU
zhlédnutí 472Před 7 měsíci
Pharmacologic Management of Pain in the ICU
Richmond Agitation-Sedation Scale (RASS)
zhlédnutí 4,3KPřed 7 měsíci
Richmond Agitation-Sedation Scale (RASS)
Flow Waveform Assessment on Mechanical Ventilation
zhlédnutí 1,2KPřed 11 měsíci
Flow Waveform Assessment on Mechanical Ventilation
Fluid Stewardship in Sepsis De escalation and De resuscitation
zhlédnutí 1,8KPřed 11 měsíci
Fluid Stewardship in Sepsis De escalation and De resuscitation
Prolonged Beta-lactam Antibiotic Infusion in the Treatment of Sepsis in ICU
zhlédnutí 827Před 11 měsíci
Prolonged Beta-lactam Antibiotic Infusion in the Treatment of Sepsis in ICU
De-resuscitation & De-treatment in Sepsis and Septic Shock
zhlédnutí 1,1KPřed 11 měsíci
De-resuscitation & De-treatment in Sepsis and Septic Shock
Nicotine replacement therapy in ICU, what does the evidence say?
zhlédnutí 569Před rokem
Nicotine replacement therapy in ICU, what does the evidence say?
جزاك الله خيرا د مازن . جعله الله في ميزان حسناتك . واحدة من أروع المحاضرات
دكتور بعد ازن حضرتك المشاكل دي بسبب اي ساعدني ارجوك انا بموت
APRV should be banned. It is not effective and in the cases in which the outcome is positive, an equal or superior outcome could be achieved with another mode.
Can be used ABG guided rususciation fluid,?
You can use the A-v CO2 gap to guide resuscitation in addition to lactic acid
يا دكتور انا مصابة بالصم منذ 6 اشهر هل انا مصابة بكورونا ارجو الاجابة بالتعليقات من فضلك😭😭😭😭😭😭😭😭😭😭😭🥺🥺🥺🥺🥺🥺🥺🥺🥺🥺
Thanks for the tip. 👍
انا عند تعب المزمن مند عملت تلقيح فايزر 2022ماعندي طاقة احس بتعب شديد وعدم القدرة على لوقوف ولا فعل اي شي هل من احد اتعفا؟؟؟؟
ارجوك دكتور انا لم اصب الحمد لله بالكورونا بس داءما راسي من الخلف يولمني وادوخ ازاةركبت بالسيارة وفكي يولمني عمري 32
و هل لكل هذا علاج
Excellent talk
ارجو الدعاء لوالدتي من هذا المرض وجزاكم الله خيرا
انا اخدت جرعتين سينوفارم ولى عندي شحا في القرجوطة
Thanks for your explanation I have questions sines the patient can breath in top of the p high dose he exhale if yes what’s the benefit of the rales then ?
Yes he exhales, which rate do you mean?
ربي يرحمها ويرحمنا
Never understood this logic of pressure volume loop .and never done it clinical..?
It is really very simple if you follow the phased carefully
👍
A very comprehensive lecture! Thank you for sharing your knowledge
فقدت الشم وبعدها التذوق ذهبت لدكتور اعطاني علاج ادويه رجع كلشي تمام بعد ما خلص الدواء ارجعت من الصفر ..
Thank you so much for the presentation! helpful for me 29/5/2024
I'm sorry, do you mean compliance, rather than elastance? Elastance is the inverse of compliance.
It is the same whether you use compliance or elastance, as you mentioned compliance is the reverse of elastance or it is volume divided by pressure. Whereas elastance is pressure divided by volume. The idea is on the PV curve, the most compliant area (or the lowest elastance) is the middle part of the curve.
بظبططط 😢
مشكور thanks
كل الشكر والتقدير لجهودكم المبذولة في هذه المحاضرة.
دكتور.اختي.عندها.كرسطرول.لعملة.للقاح.مرتين..ماتت
Great video!
Thanks!
Thanks a lot for clarifying complicated concept, it helps my practice and my patients care…would like to see more videos 😊
Thanks
اسأل الله العظيم رب العرش العظيم ان يشفي كل مريض يتألم اللهم امين يارب العالمين
جزاك الله خيرا د مازن و نفع بك💐
Thanks
يا دكتور اعطيني جرعة الاستعمال للطفيليات ارجوك رد عليا للفركمتين
توفي ابي اثر هذا المرض عنده شهرين متوفى رحمه الله واسكنه فسيح جناته ياريت لو الاطباء فهمونا عن هذا المرض بطريقة صحيحة عوض الله ابي بالجنة ان شاء الله
زاوى لالز وتتة توووةلو ةة ؤىىة ى. ة. ىةىلى ة راى. ىةة ةاااى. ة ب. ى. ىليا ىةىي. ، رر ؤؤة ر ةل
يعطيك العافية حكيم محاضرة اكثر من رائعة ❤
22:11 What did Khaled mean when he asked why we use SIMV +PS? Isn't it the best mode for ARDS patients in intensive care?
No SIMV PS mode is not the best and I do not see a reason why you should use it, better to do PRVC on all patients and when ready to wean you do SBT
طولو بالكم ليه مستعجلين انا صار لي ١٥ مابشم
دعواتكوم لامي بالرحمة توفيت بهذا المرض
فيديوامطمن صحيح مدتة اسبوعين جزاك الله خيريادكتور
يا دكتور صارلي شهر تقريباً فاقد حاسة الشم والتذوق والله نفسيتي تعبت
طريقة فاشله جدا صارلي شهر احاول اشم واكل ثوم وليمون وبصل ومافي فائده لسه ما اشم
انا فقدت حاسة الشم بسبب السائل الأنفية
الرضع اقيائهم بلغم مع الشرقه المنكرره هو يعتبر سعال لانهم لا يعرفون ان يسعلو مثل الكبار مع خنفرة او احتقان وربما اسهال
انا صرلي ٦ شهور فاقدة الحاستين ولهلأ مارجعت😭
اهلا دكتور كيف حالك
لي مادارش اللقاح يدير جام🇩🇿
مستحيل ما تقول
Thanks alot , it was really helpful
د. أ
كل ده من التطعيم
ولكن دكتور انت ما عندك علم هما شو مخلين باللقاح ولهذا لا تدافع عن اللقاح
دكتور إذا كانت بس من فتحة وحدة مافي شم شو العمل ؟ و ممكن تنفقد للابد ؟
ليش يا كورونا جديد 😮