SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.
SJR is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and a qualitative measure of the journal’s impact.
The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
© Thomson Reuters Journal Citation Reports 2015
To calculate the five year Impact Factor, citations are counted in 2014 to the previous five years and divided by the source items published in the previous five years.
© Journal Citation Reports 2015, Published by Thomson Reuters
Heart & Lung: The Journal of Acute and Critical Care, the official publication of The American Association of Heart Failure Nurses, presents original, peer-reviewed articles on techniques, advances, investigations, and observations related to the care of patients with acute and critical illness and patients with chronic cardiac or pulmonary disorders.
The Journal's acute care articles focus on the care of hospitalized patients, including those in the critical and acute care settings. Because most patients who are hospitalized in acute and critical care settings have chronic conditions, we are also interested in the chronically critically ill, the care of patients with chronic cardiopulmonary disorders, their rehabilitation, and disease prevention. The Journal's heart failure articles focus on all aspects of the care of patients with this condition. Manuscripts that are relevant to populations across the human lifespan are welcome.
We are interested in publishing articles representing a broad range of science and clinical practice in a variety of settings as it pertains to our target population. Because health care and the health sciences are global, interdisciplinary, multidisciplinary, and transdisciplinary, we encourage authors to submit manuscripts that reflect these perspectives. Many articles also provide nurses with a framework for applying research results in clinical practice.
We publish original research, case reports, reviews, and observations that are on the cutting edge of science and clinical practice. Discussions of costs of care, patient education, and health policy are relevant to our focus. Reports of well-designed clinical trials and systematic reviews are especially welcome.