Techniques: Heart Sounds & Murmurs
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Fourth Heart Sound S4 ... Clinical significance: Seen in patients with stiffened left ventricles, resulting from conditions such as hypertension, aortic stenosis, ... [HeartSounds&Murmurs] | Liver&Ascites | NeckVeins | Pulmonary | Thyroid Examination • Techniques • 1st&2ndHeartSounds • 2nd&3rdHeartSounds • ClicksandSnaps • Murmurs • Rubs • Demonstrations Historical Pathophysiology AssociatedEvaluations • PatientHX • PhysicalExam • Laboratory&Imaging DifferentialDx EvidenceBase • AccuracyinDiagnosisofSystolicMurmurs • AccuracyinDiagnosisofDiastolicMurmurs • AccuracyinDiagnosisofCHF References TeachingTips [SkillModules >> HeartSounds&Murmurs >> Techniques ] Techniques:HeartSounds&Murmurs Third&FourthHeartSounds Atriplerhythmindiastoleiscalledagallopandresultsfromthepresence ofaS3,S4orboth. Description: Bothsoundsarelowfrequencyandthusbestheardwiththebellofthestethoscope. Location: IforiginatingfromLV Usuallybestheardoverapexwithpatientinthe leftlateralposition Softerduringinspiration IforiginatingfromRV Usuallybestheardoverleftlowersternalborder Louderduringinspiration backtotop ThirdHeartSoundS3 Description: Lowfrequencysoundinearlydiastole,120to180msafterS2 Soundslike: LubdububS1S3S2cadencesimilarto"Kentucky" ClinicalSignificance: Resultsfromincreasedatrialpressureleadingtoincreasedflowrates,asseen incongestiveheartfailure,whichisthemostcommoncauseofaS3.Associated dilatedcardiomyopathywithdilatedventriclesalsocontributetothesound. SeeAccuracyinDiagnosis ofCHF. Lesscommonly,valvularregurgitationandlefttorightshuntsmayalsoresult inaS3duetoincreasedflow. Maybenormalphysiologicalfindinginpatientslessthanage40. backtotop FourthHeartSoundS4 Description: Lowfrequencysoundinpresystolicportionofdiastole, Soundslike: BelubdupS1S4S2cadencesimilarto"Tennessee" Clinicalsignificance: Seeninpatientswithstiffenedleftventricles,resultingfromconditionssuch ashypertension,aorticstenosis,ischemicorhypertrophiccardiomyopathy. Inpatientwithmitralregurgitation,suggestiveofacuteonsetofregurgitation duetotheruptureofthechordatendinaethatanchortheValvularleaflets. Proceedtothenexttechnique backtotop
延伸文章資訊
- 1S4 Heart Sound - MEDZCOOL - YouTube
- 2S3 and S4 Gallop - Heart Sounds - MEDZCOOL - YouTube
- 3Fourth heart sound - Wikipedia
The fourth heart sound or S4 is an extra heart sound that occurs during late diastole, immediatel...
- 4S4 Heart Sound Topic Review | Learn the Heart - Healio
The fourth heart sound (S4), also known as the “atrial gallop,” occurs just before S1 when the at...
- 5Heart Sounds - CV Physiology
The fourth heart sound (S4), when audible, is caused by vibration of the ventricular wall during ...
