Seasonal occurrence and ecological risk assessment of polycyclic aromatic hydrocarbons in the sediments and water in the left-bank canals of Indus River, Pakistan.

This study investigated a pressing environmental concern: the presence, distribution, sources, and ecological implications of sixteen polycyclic aromatic hydrocarbons (PAHs) in the left-bank canals of Kotri barrage-Akram, Pinyari, and Phuleli of the Indus River in Pakistan. These vital waterways, crucial for industrial, domestic, and agricultural activities, are experiencing contamination threats from anthropogenic sources, particularly PAHs. The study collected three water and two sediment samples from each canal in pre-monsoon and post-monsoon seasons.

An integrated approach for evaluating freshwater ecosystems under the influence of high salinity: a case study of Manchar Lake in Pakistan.

Manchar Lake, Pakistan's biggest lake in the arid zone, faces human-induced salinity issues. This study investigated its effects on the multifaceted ecosystem services, including serving as a source of drinking and irrigation water and aquatic health through assessing fish diversity and characteristics. Analyses of 189 water samples from 21 sites revealed spatiotemporal variations in major ions contributing to lake water salinity.

Validation of Grace Risk Score in predicting in-hospital mortality in patients with non ST-elevation myocardial infarction and unstable angina.

Objective: To validate the global registry of acute coronary event (grace) risk score in a Pakistani population at Tabba Heart Institute Karachi in patients with non ST-Elevation Myocardial Infarction (NSTEMI) and Unstable Angina (UA).

Methods: In this prospective Observational registry study, 530 adults hospitalized patients with a diagnosis of Non-ST-Elevation Myocardial Infarction and unstable angina were enrolled between March 2012 and August 2012 at the Tabba Heart Institute, Karachi, Pakistan. For each patient, the grace risk score was calculated and its discrimination evaluated and correlated with in-hospital mortality using the Kendall's tau-b bivariate correlation test.

Pro-brain natriuretic peptide plasma levels, left ventricular dimensions and ejection fraction in acute dyspnoea.

Objective: To determine the association of the pro-brain natriuretic peptide (NT-proBNP) plasma levels with twodimensional echocardiographic determination of left ventricular dimensions and ejection fraction (EF) in acute dyspneic patients.

Study Design: An observational cross-sectional study.

Place And Duration Of Study: Tabba Heart Institute, Karachi, from January to June 2010.

Diagnostic significance of NT-proBNP estimation in patients with acute dyspnea.

Objective: To determine the diagnostic significance of plasma NT-proBNP estimation in patients presenting with acute dyspnea in Emergency Department.

Study Design: An observational, cross sectional study.

Place And Duration Of Study: From January to June 2008 at Liaquat National Hospital, Karachi.