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13 Possible Causes for Decreased Intensity of S1

  • Myocardial Infarction

    In cross-sectional studies in the general population, 15 to 40% of patients with ECG evidence of past myocardial infarction (MI) do not give a history of typical cardiac symptoms [ 1, 2, 3 ]. Mortality rates in patients with such “silent” MIs have been reported as higher than, similar to, or lower than those in[…][doi.org]

  • Acute Myocardial Infarction

    Ventricular septal rupture (VSR) is a rare but fatal complication of acute myocardial infarction (AMI) with an associated mortality that ranges from 41% to 80%. The treatment consists of supplemental oxygenation, afterload reduction, intraaortic balloon pump, and surgical repair. In selected patients, extracorporeal[…][ncbi.nlm.nih.gov]

  • Mitral Valve Insufficiency

    2015 ICD-9-CM Diagnosis Code 746.6 Congenital mitral insufficiency 2015 Billable Thru Sept 30/2015 Non-Billable On/After Oct 1/2015 ICD-9-CM 746.6 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 746.6 should only be used for claims with a date of service on or before[…][icd9data.com]

  • Papillary Muscle Dysfunction

    Abstract Cross-sectional echocardiography identified two abnormal patterns of mitral valve closure in 14 patients with mitral regurgitation due to papillary muscle dysfunction: (1) in three patients with an akinetic inferior-posterior wall but normal cavity size, papillary muscle fibrosis was associated with late systolic[…][ncbi.nlm.nih.gov]

  • Mitral Valve Incompetence

    Acquired left ventricular-to-right atrial communication is encountered periodically. This condition is chiefly attributable to surgical mishaps, trauma, endocarditis, or endomyocardial biopsy. In a few instances, a Gerbode-like defect develops after the repair of an atrioventricular septal defect. Our search of the[…][ncbi.nlm.nih.gov]

  • Arachnoiditis

    The back pain had gradually increased in intensity. On examination, she had decreased power in the lower limbs which was more on the left side.[ijpmonline.org] Sensations were decreased in L5-S1 dermatome.[ijpmonline.org]

  • Spinal Epidural Abscess

    […] the dorsal sac and decreased signal intensity of the L5 and S1 vertebral bodies.[casesjournal.biomedcentral.com] A decreased signal intensity of the L5 and S1 vertebral bodies was also demonstrated (Figure 1 ).[casesjournal.biomedcentral.com] On the pre-contrast T1-Weighted Spin-echo (SE) sagittal images, a fluid collection in the posterior epidural space with low signal intensity and anteriorly compressing the[casesjournal.biomedcentral.com]

  • Primary Amyloidosis

    As shown in Supplemental Figure S1, the appearance and increase of the 1630 cm 1 band occurred simultaneously to the decrease in the intensity of the Amide II component at[ncbi.nlm.nih.gov]

  • Systemic Amyloidosis

    As shown in Supplemental Figure S1, the appearance and increase of the 1630 cm 1 band occurred simultaneously to the decrease in the intensity of the Amide II component at[ncbi.nlm.nih.gov]

  • S3 Gallop

    Increased or decreased intensity (loudness) of the heart sounds may indicate certain pathologies.[amboss.com] S1 intensity Loud S1 Mitral stenosis ( transvalvular pressure gradient) Tachycardia (short diastole ) Hyperdynamic states (e.g., left-to-right shunts ) Short PR interval ([amboss.com]

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