Physiology of Heart sounds made simple - USMLE Step 1

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- / drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- t.me/bhanuprak...
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- linktr.ee/DrGB...
Physiology of Heart sounds made simple - USMLE step 1
Heart sounds are the noises generated by the mechanical actions of the heart, such as the closing of heart valves and the flow of blood through the heart chambers. Understanding the physiology of heart sounds is crucial for medical students preparing for the USMLE Step 1, as it forms the basis for interpreting normal and abnormal heart sounds in clinical practice. There are two main heart sounds, S1 and S2, and two additional sounds, S3 and S4, which may be heard in certain conditions.
S1 (First heart sound):
S1 is produced by the closure of the atrioventricular (AV) valves, specifically the mitral valve and tricuspid valve, at the beginning of ventricular systole. It marks the onset of ventricular contraction and is generally described as a "lub" sound. S1 is best heard at the apex of the heart, which is typically located at the 5th intercostal space, just medial to the midclavicular line.
S2 (Second heart sound):
S2 is generated by the closure of the semilunar valves, specifically the aortic valve and pulmonary valve, at the end of ventricular systole. It marks the onset of ventricular relaxation (diastole) and is generally described as a "dub" sound. S2 is best heard at the left upper sternal border (aortic area) and left lower sternal border (pulmonic area).
S3 (Third heart sound):
S3 is an abnormal heart sound that may be heard in some conditions, such as heart failure. It is produced by the rapid filling of the ventricles during early diastole, causing vibrations in the ventricular walls. S3 is typically described as a "gallop" rhythm and is best heard with the bell of the stethoscope at the apex of the heart with the patient in the left lateral decubitus position.
S4 (Fourth heart sound):
S4 is another abnormal heart sound that may be heard in certain conditions, such as hypertension or aortic stenosis. It is produced by the vibration of the ventricular walls during atrial contraction in late diastole when the ventricles are resistant to filling. S4 is also described as a "gallop" rhythm and is best heard with the bell of the stethoscope at the apex of the heart with the patient in the left lateral decubitus position.
#physiologyofheartsounds #heartsounds #heartsoundsusmle #heartsoundslecture #heartsoundsphysiology #1stheartsound #2ndheartsound #3rdheartsound #4thheartsound #fmge #medicalstudents #usmleprep #usmlepreparation #drgbhanuprakash #mbbslectures #nationalexitexam #usmle #medicalcollege #nationalexittest

[@doctorbhanuprakash]

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- instagram.com/drgbhanuprakash 📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- t.me/bhanuprakashdr 📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- linktr.ee/DrGBhanuprakash

[@RaheelaSarwat]

Great ...thanku...Love from Pakistan... regards Dr Raheela

[@doctorbhanuprakash]

most welcome

[@levicleare3130]

this dr is great. he is so clear.

[@drshoaiblaghari8036]

Awesome delivery sir...

[@PrabhatKumar-mu1nr]

Again a super video by Bhanu Prakash Sir..!

[@RaheelaSarwat]

You way of teaching is beautiful ❤️

[@doctorbhanuprakash]

Wow, thank you

[@atiyafahmida2940]

You are genius Sir.. Your lecture is very helpful for clear concept...

[@doctorbhanuprakash]

thank u

[@tabassumfatima8354]

1st time I watch ur whole video...n it was amazing to understand d ❤️ sound ....thnq so much 🙂,..keep going sir 🙏

[@doctorbhanuprakash]

that's nice

[@ganeshsardar5091]

Sir, thank you for giving clear conception.

[@kvtkd2208]

Thanks All of you God bless all of you

[@prasannaba4411]

Wonderful sir🎉

[@doctorbhanuprakash]

Thanks a lot 😊

[@hafeeshfazulu]

Superb lecture

[@ajmusicveda3244]

Thankz a lot sir

[@yudhisthirmudi6315]

Excellent lecture Sir.

[@dr.hussain5512]

Great contribution dr

[@sabavatmamatha9389]

Tq Soo....much Sir. it's very useful.

[@waheguruwaheguru9176]

V well explained 🏆🎧

[@bushrajafri3571]

Thank you so much sir ❤ Very well explained

[@_botox0165]

Superb sir ❤️

[@surjitrathore3447]

thanks, you are really knowledgeable and explain the things good 👏

[@doctorbhanuprakash]

Tysm

[@ابراهيمالرويسان-س8ظ]

You the best dactor

[@doctorbhanuprakash]

TYSM

[@pashamnikitha12]

Thank you sir❤

[@doctorbhanuprakash]

Most welcome

[@sungkim1596]

Very impressive!

[@soibamnivarani7962]

Thnk u Sir for such clarification of lesson.

[@drtariqafridi4082]

Tnk u sir.very good explanation of cardiac sound but one thing that is missing is " diagram" that is very helpful for student.

[@doctorbhanuprakash]

Noted

[@playersfield8868]

thankyou sir !!!

[@doctorbhanuprakash]

Ur most welcome

[@_unknowngirl_9101]

Thank you so much sir ☺️💕

[@doctorbhanuprakash]

Ur most welcome

[@joshuwagahatraj8604]

Very nice

[@abdrhemali7551]

Thank you very much

[@shantanukadam4273]

Thanks you for video ☺️

[@doctorbhanuprakash]

My pleasure 😊

[@jagritmahajan6975]

very nice lecture sir

[@fareehakhan9963]

Awesome sir . Love from PAKISTAN

[@doctorbhanuprakash]

Thank u so much

[@baburamkhatri4801]

Be yourself first 🫡

[@dtgameryt7469]

Sir love from nalgonda

[@doctorbhanuprakash]

Tysm

[@drrahulkumar4645]

Thanks a lot 🙏🏻

[@VishalSingh-wq6qk]

Very nice video sir

[@ابراهيمالرويسان-س8ظ]

Possible explain from essential

[@mayuripadole722]

Thank u so much sir🙏

[@doctorbhanuprakash]

All the best

[@nishalamichhane3934]

Thank you sir 🙏

[@doctorbhanuprakash]

Most welcome

[@প্ৰাণপ্ৰতিম]

Nice explanation sir.Thank you.Sir ,how we will know which one is A2 & which one is P2?

[@chandrasekharjuvvadi1005]

Excellent sir

[@doctorbhanuprakash]

Thank u

[@rachelspates2816]

Question: Hello, how is there S1 physiologic splitting ? I thought that happened during inspiration but for S2 ? 03:10 ish

[@doctorbhanuprakash]

Medvizz Animated medical video lectures : 1200+ complete animated medical Video lectures includes all high-yield topics enough to cover all contents of mbbs and usmle step 1 . Subjects covered are - Anatomy , Physiology , Biochemistry , Pathology , Pharmacology , Genetics , Immunology , Microbiology , Histology , Embryology Clinical cases with detailed explanations for relevant topics High-yield notes for all above subjects Question bank wich covers all aspects of NEETPG , USMLE and PLAB software of Question bank mimic actual exam experience of respective licensing exams www.medvizz.com [phone] ( whatsapp )

[@israrali2329]

Where is ur all lecture

[@ابراهيمالرويسان-س8ظ]

Possible give number phone to contact WhatsApp

[@kanakalasatyam7425]

Sir from which state you are

[@sridharavunoori103]

Telangana

[@USMLE585]

Hello sir,I have a small doubt.S4 is produced in atrial systole then why it is called as Diastolic sound???.

[@doctorbhanuprakash]

Because atrial systole is the last phase of ventricular diastole

[@dtgameryt7469]

Sir do some videos in telugu

[@iqra4397]

Sir plz explain murmurs

[@doctorbhanuprakash]

Sure

[@iqra4397]

@@doctorbhanuprakash thnk u

[@hardiktripathi4614]

very nice sir me aapse coaching Krna chahta hu where are you leaving sir contact number mil skte. hai kya aapke

[@doctorbhanuprakash]

ECG Made Ridiculously simple - UDEMY 👇👇👇👇👇👇👇👇👇👇👇👇 www.udemy.com/course/masterecg/?referralCode=8D48115DBF4576D8B1E0

[@poojashree8520]

wow this really helped me ,, thankyou so much doc