9. What study variables were independently predictive of the 50 premature ventri
ID: 3200069 • Letter: 9
Question
9. What study variables were independently predictive of the 50 premature ventricular
contractions (PVCs) per hour in this study?
10. In Table 1, what race is the mode for this sample? Should these study ?ndings be generalized
to American Indians with ACS? Provide a rationale for your answer.
Introduction Winkler and colleagues (2013) conducted their study to describe the arrhythmias of a population of patients with acute coronary syndrome (ACS) during their first 24 hours of hospitalization and to explore the link between arrhythmias and patients' outcomes. The patients with ACS were admitted through the emergency department (ED), where a Holter recorder was attached for continuous 12-lead electrocardiographic (ECG) moni- toring. The ECG data from the Holter recordings of 278 patients with ACS were analyzed The researchers found that "approximately 22% of patients had more than 50 premature ventricular contractions (PVCs) per hour. Non-sustained ventricular tachycardia (VT) occurred in 15% of the patients Only more than 50 our independently pre dicted an increased length of stay (pExplanation / Answer
Answer:
9. What study variables were independently predictive of the 50 premature ventricular
contractions (PVCs) per hour in this study?
Age greater than 65 years and final diagnosis of acute myocardial infraction(AMI) were independently predictive of the 50 premature ventricular contractions (PVCs) per hour.
10. In Table 1, what race is the mode for this sample? Should these study ndings be generalized
to American Indians with ACS? Provide a rationale for your answer.
White is the mode (highest frequency,143 out of 278). This study ndings may not be generalized to American Indians with ACS because this American Indians constitutes only 8% of the sample.
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