1.Impact of Serum Troponin I Levels on short-term outcomes following an acute ischemic stroke.
Regin Filamel R. Escalada ; Cyrus G. Escabillas
Philippine Journal of Neurology 2020;23(1):33-41
BACKGROUND:
There is a complex relationship between coronary artery disease and stroke. Troponin I has been
investigated for its potential as a prognostic biomarker in determining outcome and mortality after an
acute cerebrovascular insult such as an ischemia. Several studies have been done mostly in Western
countries leaving very little data for patients of Asian/Southeast Asian descent. Its implications in the
prognosis and management of acute ischemic stroke may guide clinicians in rendering the most suitable
care for their patients.
OBJECTIVE:
This study aims to identify the impact of serum troponin I levels on short-term functional outcome after an
acute ischemic cerebrovascular event. It also intends to evaluate the role of cardiac troponin I in identifying
the prognosis and in-hospital mortality among patients with acute ischemic stroke.
METHODS:
A prospective cohort study was done from August 2019 to February 2020 including 65 adult acute ischemic
stroke patients (35 males and 30 females) coming to consult within 48 hours from ictus. Baseline
electrocardiogram was done. Patients without evidence of an acute ACS and other cardiac diseases were
included. Blood samples for determination of serum troponin I were collected. Patients were monitored for
development of complications and incidence of in-hospital mortality. Sixty days from onset, short-term
functional outcome was assessed by determining change in NIHSS score. Modified Rankin Scale (mRS)
was used to assess degree of disability on follow-up.
RESULTS:
Out of 65 patients initially enrolled, 23 (35.38%) had abnormally elevated troponin I. Patients with history
of previous stroke and higher NIHSS scores on admission tend to have elevated troponin I. Patients with
elevated troponin I had worse short-term functional outcome and were dependent in performing daily
activities. This study did not demonstrate a predictive value of elevated troponin I for in-hospital mortality.
CONCLUSION
In patients with acute ischemic stroke, elevation of serum TnI has been observed even in the absence of a
definite clinical acute coronary syndrome. Presence of previous stroke and more severe neurologic deficits
has been shown to be related to elevations in TnI. This elevation in TnI, in turn, is associated with poor
short-term outcome limiting patients’ functionality and independence. Managing these patients necessitate
aggressive but judicious use of different diagnostic and treatment modalities to prevent adverse coronary
events. These events are likely to be prevented when early recognition and proper management has been
provided.