Create issue ticket

15 Possible Causes for Diminished Heart Sounds, Electrical Alternans, Pericardial Knock

  • Pericardial Effusion

    On physical examination classical signs include neck vein distention with elevated jugular venous pressure at bedside examination, pulsus paradoxus, and diminished heart sounds[eurheartj.oxfordjournals.org] […] pericardial effusion produces a triad of: Low QRS voltage Tachycardia Electrical alternans ECG findings with Electrical alternans Electrical alternans occurs when consecutive[lifeinthefastlane.com] See also constrictive pericarditis. pericardial friction rub see pericardial rub. pericardial knock an early diastolic sound caused by loss of pericardial elasticity accompanying[medical-dictionary.thefreedictionary.com]

  • Cardiac Tamponade

    Electrical alternans – i.e the beat-to-beat variation i electrical amplitude – is the ECG hallmark of cardiac tamponade.[ecgwaves.com] , and diminished heart sounds) Cold, clammy extremities Anxiety, restlessness Diagnosis Blood tests EKG, Chest X-ray Cardiac ECHO Treatment Oxygen IV fluids Medications to[cardiachealth.org] knock Tension pneumothorax distinguishing factors decreased or absent breath sounds hyperresonant percussion Treatment Management approach all approaches focus on removal[medbullets.com]

  • Chronic Constrictive Pericarditis

    In cardiac tamponade, the ECG shows electrical alternans as the heart “floats” in relation to the recording leads.[aafp.org] Signs may include hypotension, elevated jugular venous pressure (JVP) and diminished heart sounds (Beck's triad or acute compression triad described in 1935 with cardiac tamponade[patient.info] The beginning of this anomalous movement was coincident with the pericardial knock in the phonocardiogram and its peak was coincident with the simultaneously recorded deep[ncbi.nlm.nih.gov]

  • Malignant Pericardial Effusion

    EKG showing sinus tachycardia, low QRS voltage and electric alternans, suggesting pericardial effusion. Figure 2. C hest X-ray pre- and post-pericardiocentesis.[swjpcc.com] knock (60–200 msec after the second heart sound), which is caused by sudden termination of ventricular inflow by the encasing pericardium.[clevelandclinicmeded.com] RESULTS: For PEs of all sizes, the Se, Sp, PPV, and NPV for detecting cardiac tamponade were: low-voltage complexes (56%, 74%, 81%, 46%), electrical alternans (23%, 98%, 95%[ncbi.nlm.nih.gov]

  • Acute Pericarditis

    In patients with cardiac tamponade, the EKG may show signs of pericarditis, with especially low QRS voltages and electrical alternans 3.[en.my-ekg.com] Accordingly, patients present with fatigue, jugular vein distention, peripheral edema, and a characteristic pericardial knock on auscultation, caused by a sudden stop in ventricular[amboss.com] Rarely, electrical alternans may be seen, depending on the size of the effusion.[en.wikipedia.org]

  • Pericardial Calcification

    alternans ECHO – diagnostic, echo-free zone around the heart, diastolic collapse of RA&RV Management : Seek expert help Urgent drainage Send fluid for culture, ZN stain/TB[wikilectures.eu] Signs may include hypotension, elevated jugular venous pressure (JVP) and diminished heart sounds (Beck's triad or acute compression triad described in 1935 with cardiac tamponade[patient.info] Physical examination revealed increased jugular venous pressure (14 cm of water), ascites along with presence of Kussmaul sign and pericardial knock.[jacpjournal.org]

  • Pericardial Disorder

    C, Beat-to-beat variations in amplitude and contour of the QRS and ST-T complexes that characterize electrical alternans.[veteriankey.com] Signs may include hypotension, elevated jugular venous pressure (JVP) and diminished heart sounds (Beck's triad or acute compression triad described in 1935 with cardiac tamponade[patient.info] Electrical alternans – i.e the beat-to-beat variation i electrical amplitude – is the ECG hallmark of cardiac tamponade.[ecgwaves.com]

  • Constrictive Pericarditis

    Abnormal findings on ECG include tachycardia, electrical alternans ( Figure 9 ), low voltage, and may include changes associated with acute pericarditis ( Figure 6 ).[clevelandclinicmeded.com] Signs may include hypotension, elevated jugular venous pressure (JVP) and diminished heart sounds (Beck's triad or acute compression triad described in 1935 with cardiac tamponade[patient.info] Pericardial Knock (Constrictive Pericarditis) The early diastolic sound of pericardial constriction occurs slightly earlier than the average third heart sound.[podbay.fm]

  • Pericardial Friction Rub

    Abnormal findings on ECG include tachycardia, electrical alternans ( Figure 9 ), low voltage, and may include changes associated with acute pericarditis ( Figure 6 ).[clevelandclinicmeded.com] […] volume variable Heart sounds abnormal Heart sounds different Heart sounds diminished Heart sounds exaggerated Holodiastolic murmur Increased area of cardiac dullness Irregular[icd9data.com] See also constrictive pericarditis. pericardial friction rub see pericardial rub. pericardial knock an early diastolic sound caused by loss of pericardial elasticity accompanying[medical-dictionary.thefreedictionary.com]

  • Radiation Pericarditis

    In cardiac tamponade, the ECG shows electrical alternans as the heart “floats” in relation to the recording leads.[aafp.org] Signs may include hypotension, elevated jugular venous pressure (JVP) and diminished heart sounds (Beck's triad or acute compression triad described in 1935 with cardiac tamponade[patient.info] This includes a pericardial knock Pericardial rub (heard best while leaning forwards) and distant heart sounds Abdomen Hepatomegaly Ascites Extremities Ankle edema Electrocardiogram[wikidoc.org]