Muhammad Kashif, Atif Nazir, Asim Javed, Muhammad Mohsin, Khawar Naeem Satti, Waleed Abbasi, Mohsin Shah.
Evaluation of Coronary Arteries Diameter using an Intravascular Ultrasound during Coronary Angiography in a Tertiary Care Hospital of Rawalpindi.
J Sharif Med Dent Coll Jan ;9(1):3-7.

Objective: To evaluate the diameter of coronary arteries using intravascular ultrasound (IVUS) in individuals presenting for coronary angiography. Methodology: It was a cross-sectional descriptive study conducted at the Rawalpindi Institute of Cardiology, Rawalpindi from July to December 2020. A total of 80 patients with a normal segment on IVUS imaging and plaque burden less than 30% were enrolled in the study by non-probability convenient sampling. All these patients underwent IVUS during coronary angiography for guideline-directed clinical indication. Intravascular ultrasound images were taken from the left anterior descending artery (LAD), right coronary artery (RCA), and left circumflex artery (LCX), and their diameters were measured. Patient demographic details about age, gender, and risk factors for coronary artery disease such as body mass index (BMI), smoking, hypertension (HTN), & diabetes mellitus (DM) were noted. Data was analyzed using the Statistical Package for the Social Sciences (SPSS) version 25. Results: The mean diameter of LAD was 3.96+/-0.48 mm, RCA was 3.7+/-0.22 mm, and LCX was 3.4+/-0.43 mm. There was a significant association of LAD, LCX, and RCA diameter with gender, males having a greater diameter than females. Similarly, HTN and DM had a significant association with LAD diameter. Smoking was also associated with LCX and RCA diameter (p-value=0.001). In addition, age was also significantly associated with RCA diameter (p-value=0.002). Conclusion: The diameter of coronary arteries determined by IVUS was larger as compared to visual assessment on coronary angiography. So, intravascular ultrasound provides a better measurement of the size of coronary arteries. The diameter of LAD, RCA, and LCX was significantly associated with gender. Keywords: Coronary arteries. Hypertension. Coronary angiography. Intravascular ultrasound.

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