Electronic Health Record Messaging Patterns of Health Care Professionals in Inpatient Medicine

This cross-sectional study examines secure messaging patterns among health care professionals in the internal medicine inpatient setting.


Introduction
Miscommunication and teamwork failures are leading causes of sentinel events 1 and cost US hospitals an estimated $12 billion in 2010. 2 Information technology facilitates communication among health care professionals (HCPs).The US Centers for Medicaid & Medicare Services states that HCPs should only text patient information using secure messaging applications. 3Messaging is reported to improve patient emergency department length of stay. 4 However, messaging has unintended patient safety consequences, such as increased interruptions for HCPs. 5 Implementors of messaging technologies must appreciate interprofessional communication patterns, potential misuse, and consequences for patient care.
Since 2017, our large urban academic medical center has provided secure messaging access via desktop computers and smartphones.Patients can be linked to conversations comprising 2 or more HCPs in Epic Secure Chat, facilitating care decisions.To better understand use patterns among HCPs and relative consequences for their daily work, this study characterizes a mature electronic health record-based secure messaging network used in the care of internal medicine inpatients.

Methods
The New York University Grossman School of Medicine Institutional Review Board approved this cross-sectional study and waived informed consent.The STROBE reporting guideline was followed.
We extracted Epic Secure Chat metadata, including user details and time stamps, associated with internal medicine service inpatients (excluding intensive care unit [ICU] transfers) at 4 hospitals from January 25, 2021, to January 25, 2022.Roles were categorized as medicine and nonmedicine attendings, house staff, advanced practice professionals (eg, nurse practitioners and physician assistants), nurses, technicians, and social workers, care managers, or allied health professionals.
User-level analysis included only HCPs who participated in at least 100 messages during the study period.Demographic information was limited for age and sex and was unavailable for race and ethnicity.Data analysis was performed on October 30, 2023, using Python, version 3.9.16(GCC).

Results
This study included 14 329 participants.Over 12 months, 15.1 million messages were sent to 2.3 users each over 108 000 inpatient encounters (33.7 daily messages/encounter).There were 5.1 million messages sent about internal medicine inpatients to 2.5 users each during 22 900 encounters (35.9 daily messages/hospitalization). Approximately 69.1% of messages were sent between 8 AM and 6 PM (Figure 1), and weekday volume was 36.3% higher.Most messages (75.9%) yielded responses within 5 minutes.
Nurses sent the largest proportion of messages (27.7%), followed by medicine house staff (13.5%) and social workers, care managers, and allied health professionals (12.6%).However, temporal variation existed, with medical clinicians sending the most daytime messages (Figure 1).Per user, medicine practitioners had the largest daily messaging burden (Figure 2).Whereas most

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Author affiliations and article information are listed at the end of this article.medicine house staff (77.0%) received more than 45 daily messages, medicine attendings generally sent fewer messages but received up to 250 daily messages.

Discussion
These findings suggest that messaging patterns differ by role, with medicine providers sending and receiving 2.8 and 3.1 times the average daily messaging volume as the other groups, respectively.

Figure 1 .
Figure 1.Hourly Message Frequencies, Stratified by Sender Role

Figure 2 .
Figure 2. Variation in Daily Secure Messaging Usage Among Health Care Professionals, by Role80