X hits on this document

PDF document

Common Congenital Heart Lesions - page 97 / 126

257 views

0 shares

0 downloads

0 comments

97 / 126

97 of 126

PRESENTATION

  • Symptoms vary widely from asymptomatic to really bad

  • Avg age of presentation is mid 20s

  • Dyspnea is most common symptom (due to elevated diastolic LV pressures)

    • o

      Further exacerbated by high systolic LV pressure and mitral regurg in those with outflow tract obstruction

  • Angina is common even in absence of CAD… myocardial ischemia from:

      • o

        high oxy demand of increased muscle mass (hypertrophy)

      • o

        narrowed small branches of coronary arteries w/in hypertrophied area

      • o

        if outflow obstruction is present, high systolic ventricular pressure Æ incr wall stress Æ also increases myocardial oxy demand

  • Syncope

      • o

        from arrhythmias (caused by abnormal myofibers)

      • o

        if outflow obstruction is present, CO falls transiently during exertion due to the increased pressure gradient b/t the LV and the outflow tract distal to the obstruction… this can lead to syncope

  • Sudden Death

      • o

        Arrhythmias can exaxerbate symptoms of HCM… A-fib is not well tolerated b/c of the loss of the end-diastolic atrial contraction and further impairment of diastolic filling… Ventricular fib is BAD and can cause sudden cardiac death w/out any of the other symptoms as warning.

Document info
Document views257
Page views257
Page last viewedFri Dec 02 18:17:13 UTC 2016
Pages126
Paragraphs5002
Words33792

Comments