PATIENTS AND METHODS
This observational study was conducted in
cardiac emergency department of Sheikh Zayed
Medical College/Hospital Rahim Yaar Khan. The
duration of this study was March 2016 to May
2016. Two hundred patients of acute STEMI was
included in this study. Patients of all age groups
and gender were included. Patients with history
of previous conduction defects, previous cardiac
surgery, with advanced stage of heart failure or
suffering from renal failure were excluded from
this study.
The diagnosis of STEMI was made according to
the definition of MI by American heart association
task force, and was defined as rise of CKMB levels
two times from the baseline value and minimum
1 mm rise in ST segment in two contiguous limb
leads or minimum 2 mm rise in ST segment in two
contiguous chest leads. Patients suffering from
2nd degree Mobitz type II or 3rd degree heart block
were labelled as High Degree Atrioventricular
Block (HAVB). The diagnosis of heart blocks
was based on the findings of standard 12 lead
electrocardiogram. The complete disassociation
between the atria and ventricular rates, with
atrial rate more than ventricular rate was labelled
as complete heart block. 2nd degree Mobitz
type II block was identified by intermittent nonconducting
P waves not proceeded by PR
prolongation or followed by PR shortening.
Detailed history regarding risk factors of
coronary artery disease e.g. diabetes, smoking,
hypertension and previous family history was
taken from the patient or from the attendant of the
patient.
Data Analysis was made using Statistical Package
for Social Sciences Software V17. Chi-square
test was used to compare in-hospital mortality
between the groups taking p-value