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heart sounds explained
heart sounds #s1 #s2 #s3
OUR HEART HAS VALVES KNOWN AS AV VALVE & SEMILUNAR VALVES. THESE VALVES MAINTAINS UNIDIRECTIONAL FLOW OF BLOOD AND PREVENTS BLOOD REGURGITATION. WHENEVER THESE VALVES CLOSE THEY produce SOUNDS. THESE SOUNDS ARE CALLED AS HEART #SOUNDS.
OBVIOUSLY, WE NEED AN STHETHOSCOPE TO HEAR IT. OUR HEART IS LOCATED IN SUCH A WAY THAT THESE SOUNDS ARE TRANSMITTED IN CHEST WALL.
CERTAIN, AUSULTAION ARE THERE, FOR PURPOSE OF PERFECT #AUSCLTATION OF #HEART # SOUND
THESE AREAS ARE LABELLED AS, heart sound locations
#heartsoundlocations
AORTIC AREA --- PLACE DIAPHRAM OF #STHETHOSCOPE AT RIGHT 2ND INTERCOSTAL SPACE.
PULMONARY AREA - PLACE DIAPHRAM OF STHETHOSCOPE AT LEFT 2ND INTERCOSTAL SPACE.
MITRAL AREA --- - PLACE DIAPHRAM OF STHETHOSCOPE AT LEFT 5TH INTERCOSTAL SPACE. (MEDIAL TO MID CLAVICULAR LINE)
TRISCUSPID AREA—ON LEFT LOWER BORDER OF STERNUM.
NORMAL #HEART #SOUND ARE SEEMS LIKE SPEAKING THE WORD:
LUN-DUB-LUB-DUB -LUN-DUB-LUB-DUB OVER REPETATION OF CYCLE
THIS LUB = IS DUE TO CLOSENING OF AV VALVES AND ALSO CALLED AS FIRST HEART SOUND S1 HEART SOUND.
DUB = DUE TO CLOSENING OF SEMILUNAR VALVES & WE CALLED IT AS SECOND HEART SOUND / S2.
#s1heartsound
S1 IS DIFFERENTIATED FORM S2 BASED OF LOUDNESS AND PITCH.
ALSO, ONE FEATURE OF S2 IS THAT IT GIVES, SPLITTING OF S2 DUB COMPONENT into D-DUB
AND WE HEAR, LIKE LUB- D-DUB-LUB-D-DUB
THIS SPLITTING IS APPRECIATED IN INSPIRATION, BCOZ OUR DIAPHRAM MOVES DOWNWARDS AND CREATES NEGATIVE PRESSURE, ALSO ONE REASON IS THAT OUR LEFT VENTRICLE IS CONTRACTED SLIGHTLY BEFORE THE RIGHT VENTRICLE AS A RESULT AORTIC VALVE IS CLOSED MUCH BEFORE THE PULMONARY VALVE AND WE HEAR THE SPLITTING OF S2 SOUND.
#heartsoundsaudio
heart sound locations
S3/ THIRD HEART SOUND. #s3heartsound
REMEMBER IT IS NORMALLY FOUND IN PREGNANCY, CHILDREN, YOUNG ADULTS & ATHLETES.
THIS IS DUE TO RAPID FILLING OF LEFT VENTRICLE OF HEART. WHICH CREATES IMPACT OF BLOOD.
THIS IS HEARD AS AN WORD SAYING: KEN-TU-CHY -KEN-TU-CHY
THIS THIRD HEART SOUND IS ONLY HEARD WITH THE BELL OF STHESTHOSCOPE AT APEX OF HEART.
REMEMBER, MOST IMPORTANT: AFTER THE AGE OF 40 IT NO MORE REMAINS, PHYSIOLOGICAL SOUND, AND BECOMES PATHOLOGICAL, PRESENCE OF S3 SOUND INDICATES, THE SIGN OF LEFT VENTRICULAR FAILURE OF HEART.
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