The ECG "Lead I sign" in cardiac disease--an indicator of go-existing obstructive pulmonary disease

Singapore Med J. 1999 Aug;40(8):556.
No abstract available

Publication types

  • Letter

MeSH terms

  • Electrocardiography*
  • Emphysema / complications
  • Emphysema / diagnosis*
  • Heart Diseases / complications
  • Heart Diseases / diagnosis*
  • Humans
  • Lung Diseases, Obstructive / complications
  • Lung Diseases, Obstructive / diagnosis*
  • Sensitivity and Specificity