Over the past 20 years, hospitalists have served as the primary workforce for the clinical care of medical inpatients in the United States.1,2 Core competencies1 state that hospitalists should be able to perform the following bedside procedures: lumbar puncture, paracentesis, thoracentesis, arthrocentesis, and central venous catheter placement. More recently, standard of care has dictated that these procedures be performed under ultrasound guidance,3-6 and thus hospitalists are also expected to be adept at point-of-care ultrasound (POCUS).7
However, no current national standard exists for ensuring basic competency among hospitalists performing bedside procedures. In addition, hospitalists’ procedural volumes are declining,8,9 and standards for procedural training during internal medicine residency have been reduced.10 As a result, many residents who intend to become hospitalists are no longer prepared to perform these procedures.
The ramifications of the loss of procedural competency for hospitalists are manifold. Technical errors are a significant source of patient morbidity and mortality,11-15 and complications arising specifically from nonoperative procedures range from 0 to 19%,16 although these data do not distinguish technical errors from unpreventable adverse events nor the degree to which hospitalists contributed to these complications. Second, hospitalists in academic medical centers might be ill equipped to function as supervisors of trainees performing procedures, which could perpetuate a cycle of suboptimal technical skills.17 Finally, the discrepancy between consensus guidelines for hospitalists and their scope of practice represents a significant area of risk management for institutions that base their credentialing policies on published competencies.
There are many compelling reasons for why hospitalists should maintain—in fact reclaim—a primary role in bedside procedures.18 Hospitalists in community and rural settings might not have easy access to procedural specialists. In academic institutions, hospitalists are the primary instructors and supervisors of procedures performed by internal medicine residents. The increased availability of POCUS allows formally trained hospitalists to perform procedures more safely under imaging guidance.16
The literature on procedures performed by hospitalists, although limited, has focused on POCUS, systems innovations such as medical procedure services (MPS), and policy recommendations for procedural credentialing. Most studies on effective procedural instructional approaches have been conducted among trainees, who are procedural novices. This research does not sufficiently address the dilemma that hospitalists face as independent physicians for whom procedures are not a significant component of their practice, yet are expected to perform invasive procedures occasionally. The purpose of our literature review is to synthesize the available research to characterize contributors to hospitalists’ procedural competency. We conclude with considerations for hospital medicine practice.
We performed a structured literature search for peer-reviewed articles related to hospitalists conducting procedures, being trained in procedures, or related to hospitalist-run MPS. We focused our search on the core hospitalist procedures with the highest potential morbidity (ie, lumbar puncture, abdominal paracentesis, thoracentesis, and central venous catheterization). We searched PubMed and Google Scholar for articles published since 1996 (when the term “hospitalists” was first coined) using keyword searches for [hospitalist OR hospital medicine] AND [procedur* OR medical procedur* OR medical procedure service] OR [(procedur* AND (train* OR educat* OR teach OR instruct*)] OR abdominal paracentes* OR thoracentes* OR lumbar puncture OR central venous catheter* OR ultrasound OR point-of-care. We included original research, brief research reports, perspectives, guidelines, and consensus statements. Exclusion criteria were articles that focused on nonhospitalists and conference abstracts. We used pearling to identify secondary sources from included articles’ bibliographies, without limits on year of publication.
Trends Towards Specialist Referrals
Between 1986 and 2007, the number and variety of procedures performed by internists decreased by half.19 Hospitalists still completed procedures in greater volume and variety than nonhospitalists,8 with approximately 50% of hospitalists performing lumbar punctures (50%), abdominal paracenteses (49%), and thoracenteses (44%) compared with less than 25% for all three procedures for nonhospitalists. Additionally, only 11% of surveyed hospitalists8 performed all nine core procedures, although these included procedures that are largely cognitive in nature (eg, electrocardiogram interpretation, chest X-ray interpretation) or procedures that have been relegated to other specialists (eg, endotracheal intubation, ventilator management, or joint injection/aspiration).
Surveys showed that, especially in larger cities and academic centers, procedural specialists have taken over a disproportionate share of procedures even as the number of procedures performed continued to rise.20 Between 1993 and 2008, the number of paracenteses and thoracenteses increased by 133% and decreased by 14%, respectively, but the share of procedures performed by radiologists increased by 964% and 358%, respectively, as evident in an analysis of Medicare billing data.20 A more recent study of Medicare claims from 2004 to 2016 similarly revealed that the percentage of paracenteses performed by radiologists compared with nonradiologists rose from 70% to 80% and thoracenteses from 47% to 66%, respectively.21 Comparable trends were apparent in claims data for lumbar punctures; between 1991 and 2011, the share of lumbar punctures performed by radiologists rose from 11% to 48%.22
In academic medical centers, hospitalists might have the opportunity to pursue other activities (eg, education, administration, research) as they progress in their careers, resulting in less clinical activity. Although hospitalists who are more clinically active in hospital care tended to perform more procedures,8 those with smaller clinical footprints reported lower levels of comfort with performing procedures8 and might have less available time to maintain procedural competency or train in new technologies such as POCUS.17
Additionally, hospitalists in both academic and community settings cited efficiency as a major reason for procedural referral. Hospitalists tended to perform more procedures if they had fixed salaries or if less than 50% of their income was based on clinical productivity, although this trend was not significant.8 Further, they also might be motivated by competing opportunity costs such as time lost caring for other patients or length of shift, which influences the amount of time spent at work.23
Notably, speculation that hospitalists referred more complex cases to specialists was not borne out by studies examining referral patterns.21,24,25
Procedural Outcomes for Hospitalists vs Nonhospitalists
No convincing data exist that procedures performed by specialists have better outcomes than those completed at the bedside by well-trained generalists, although studies were limited to the inpatient setting, to generalists who have some exposure to procedures, and to internal medicine residents on inpatient rotations. In one retrospective review, interventional radiology (IR) referrals were associated with more platelet or plasma transfusions and intensive care unit transfers than those performed at the bedside by internal medicine residents, findings that remained significant after accounting for complexity (eg, Model for End-stage Liver Disease score, need for dialysis, and platelet count).24 Similarly, a prospective audit of 529 bedside procedures did not show any differences in complication rates between generalists and pulmonologists, once generalists underwent standardized training and used pleural safety checklists and ultrasound guidance.26 An administrative database review of 130,000 inpatient thoracenteses across several university hospitals between 2010 and 2013 found that the risk of iatrogenic pneumothorax was similar among operators from IR, medicine, and pulmonary (2.8%, 2.9%, and 3.1%, respectively)27; these findings have been reproduced in other studies.28 Finally, the increasing adoption of procedural ultrasound permits procedures to be conducted more safely at the bedside, without the need to refer to radiology for imaging guidance.3-5
IR procedures also are associated with increased healthcare costs compared with bedside procedures. One study showed that hospital costs for admissions when paracenteses were performed by radiologists were higher than those in which the procedure was completed at the bedside by gastroenterologists or hepatologists.25 A chart review examining 399 paracenteses, thoracenteses, and lumbar punctures found that the average procedure cost increased by 38% for referred procedures and 56% for radiology-performed procedures, as compared with bedside procedures.29 Needing ancillary staffing in dedicated suites to perform procedures contributed to the excess cost.9 Moreover, referred procedures resulted in increased length of stay, which can incur additional costs. However, the data were conflicting; two studies did not show a statistical difference,25,28 while others found an increased length of stay,24,27,29 which might be due to the unavailability of specialists during off hours, thereby delaying nonemergent procedures.21 Detailed cost analyses have controlled for the use of procedural facilities and blood transfusions among IR specialists and simulation training among generalists, showing that total costs were $663 per patient undergoing IR procedures compared with $134 per patient undergoing bedside procedures.30
Lack of Standardized Procedural Training or Assessment
A robust body of primary studies and systematic reviews supports the use of simulation for procedural training to improve comfort and skill as well as reduce complication rates and costs.31,32 A systematic review that investigated the impact of four paradigms of procedural training found that MPS and quality improvement/patient safety approaches led to the most active learning compared with apprenticeship (ie, “see one, do one”) and approaches based on educational theories.33 Nevertheless, the vast majority of the research has been conducted in trainees,32,34 with sparse evidence among practicing physicians. One cohort study of attending physicians’ central venous catheter insertion skills on simulators found low and variable short-term performance, showing overall poor adherence to checklists.35 One article suggested that hospitalists’ procedural skills were below established thresholds of competency at baseline and that simulation-based training did not result in sustained skills, but the small sample size and high attrition limited meaningful conclusions.36 Although continuing medical education courses are available to hospitalists, there is no published evidence supporting their effectiveness.
Proxies for procedural skill have included comfort and experience, yet these markers have broadly been shown to be inadequate.34,36,37 Additionally, the natural decline of skill over time has invoked the need for periodic reassessment of proficiency.36,38 Credentialing has been equally inconstant; a survey of the Society of Hospital Medicine’s (SHM) POCUS task force revealed that only half of respondents reported their hospitals required a minimum number of procedures for initial credentialing and recredentialing.39 In short, periodic assessment of procedural skills among hospitalists has not been a routine process at many institutions.
Role of Hospitalist-Run Medical Procedure Services
It might not be necessary for all hospitalists to be proficient and credentialed in a given procedure,1 and a trend has emerged in the creation of MPS staffed by hospitalists as proceduralists. The primary aim of these MPS has been to recapture the procedures—and associated revenue—that would otherwise be referred to specialists. Moreover, concentrating procedures among a core group of hospitalists endeavors to support patient safety through several principles: (1) to increase technical proficiency through higher procedural volumes, (2) to facilitate rigorous training and assessment among dedicated individuals, and (3) to systematize best practices of operator performance, communication, and documentation.
MPS have been implemented around the country and have demonstrated several advantages. In one institution, medical firms that were offered the use of an MPS had 48% more procedural attempts by nonspecialists, without significant differences in the proportions of successful attempts or complications compared with the firms who more often referred to specialists.40 A retrospective study analyzed outcomes of 1,707 bedside procedures, of which 548 were performed by an MPS, and found that procedures done by the MPS were more likely to result in lower rates of unsuccessful procedures and to use best-practice safety processes (ie, to involve attending physicians, to use ultrasound guidance, and to avoid femoral sites for catheterization).12 Satisfaction was high among patients who underwent bedside procedures performed by a hospitalist-supervised, intern-based procedure service with a focus on bedside communication.41 From a workforce perspective, MPS have also allowed surgical or radiological subspecialties to focus on more complex cases with higher reimbursement rates,18,42 for proceduralists to expand beyond core procedures (eg, bone marrow biopsies43), and to train advanced practice providers.44 Although studies have not shown that the outcomes of procedures completed by an MPS are better than the outcomes of procedures performed by other specialists,45 one can potentially extrapolate from earlier data that procedures done at the bedside by nonradiologists would have comparable outcomes.
A myriad of factors is influencing hospitalists’ scope of practice with respect to bedside procedures. Some evidence suggests that procedures performed by specialists are not superior to those done by generalists and might be associated with increased costs. The most promising developments in the past few decades include simulation-based training, which has demonstrated effectiveness across an array of clinical outcomes but has not been sufficiently evaluated in hospitalists to draw conclusions, and hospitalist-led MPS, which promote safe and productive procedural clinical practices. However, decreasing procedural volume, increasing referrals to specialists, dwindling hospitalist interest and/or confidence, time constraints, limited training opportunities, nonuniform credentialing policies, and lack of standardized assessment are cumulatively contributing to a loss of procedural competency among hospitalists.
Taken together, these forces should compel hospital medicine groups that expect their hospitalists to perform their own procedures to identify necessary steps for ensuring the safety of hospitalized patients under their care. The following considerations derive from the available—albeit modest—evidence on procedural performance in hospital medicine (Table).
1. Create MPS to establish a core set of hospitalists to perform procedures and train them using evidence-based practices. Creation of an MPS places the responsibility of core bedside procedures in the hands of a select group of proceduralists. This strategy streamlines training and assessment of individual procedural competency to meet standards set by SHM36,46 and improves educational outcomes.47-49 MPS could improve clinical outcomes,12,42,50-52 including length of stay and cost, while maintaining patient satisfaction,41 as well as recoup lost revenue from referrals by increasing the volume of procedures done by generalists,40,49 although no robust data supporting the latter point exists. Implementing an MPS requires full-time equivalent (FTE) support for proceduralists and administrative support for data collection and tracking complications. Furthermore, a well-functioning MPS will require investment in portable ultrasound machines and training in POCUS, which has been shown to decrease complications and increase success of invasive bedside procedures.3-7 Hospital medicine groups should be aware that staffing an MPS can divert hospitalist labor and resources from other needed clinical areas, especially during the initial, low-volume phases of implementation. Strategies to offset relative value unit (RVU) loss include combining the MPS with existing clinical roles such as medical consults, code triage, and rapid response teams; or with services with lower patient caps, which might work particularly well in community hospitals. In many institutions, hospitalists can bill for procedural consults in addition to the procedures when the consult involves nonmedical patients, which is relevant when the procedure ultimately cannot be performed (eg, too little ascites to safely perform a paracentesis). Further research should establish best practices of MPS to ensure maximum procedural productivity and safety, because there are no rigorous prospective studies that evaluate strategies to create this service. Such strategies include determining the optimal ratio of proceduralists to general hospitalists, hospital characteristics that benefit most from MPS (eg, referral centers, urban-based settings), volume and type of procedures performed, and the proportion and type of referrals that are most cost-effective.
2. Establish policies with procedural specialists to arrange coverage for off-hours procedures and delineate thresholds for procedures that specialists should perform. Expanding hospitalists’ capabilities in performing procedures should trigger reconsideration of the medical center’s approach to procedural safety. A goal would be to have hospital medicine groups work collaboratively with specialists and other disciplines (eg, surgery, emergency medicine, anesthesia, or radiology) to ensure 24-hour, 7-day a week coverage of urgent bedside procedures. The potential to decrease length of stay and improve off-hour procedural quality might be a compelling rationale for hospital administration, whether or not an MPS is used. That said, we recognize that other services might be unable or unwilling to provide such coverage and that specialist off-hour coverage would incur increased costs and could reduce exposure opportunities for internal medicine residents.
A hospital-level procedures committee might be required to support an institutional imperative for procedural safety and to oversee the implementation of approaches that are practical, financially sustainable, and equitable for all service lines, especially because hospitalist groups might bear the early costs of training and retraining.
3. Hospitalist–proceduralists should collaborate with internal medicine residency programs to offer intensive procedural training experiences to residents who want these skills to be part of their future practice. Robust procedural training for trainees promotes better outcomes for the current workforce and helps to populate the future workforce with procedurally competent practitioners. Simulation-based training is a well-established procedural instruction method that is safe, authentic, and effective in terms of clinical outcomes.34 As the primary teachers of residents in many institutions, hospitalists often are the ones who impart procedural skills to residents, despite uneven skill sets. It is in the interest of internal medicine residency program directors to advocate for a core group of hospitalist–proceduralists, as MPS offer an infrastructure for training that has been shown to increase procedural volume and improve skills.47,48,50 Program directors could therefore be incentivized to sponsor some of these procedural roles with teaching and administration funds, as a trade-off for securing higher-quality procedural training and closer supervision for their trainees. The dual necessity of teaching procedural skills to residents and attending physicians alike offers economies of scale for the use of facilities, personnel, and equipment, and gives faculty an opportunity to extend their clinical teaching skills into the domain of procedural supervision.
4. Hospital medicine groups should re-evaluate credentialing and privileging to ensure procedural competency. Given the lack of published data that characterizes how many hospital medicine groups credential hospitalists to perform procedures and what practices they use to assess competency, hospital medicine groups might be signing off on procedures without verifying hospitalists’ proficiency in core procedures. SHM’s position statement on credentialing for ultrasound-guided procedures46 describes standards that could be applied to other procedures. It proposes that credentialing processes should be grounded in simulation- and patient-based assessments of cognitive and psychomotor skills, using published checklists and global ratings for feedback. Simulation training could support provisional certification, but hospitalists should reach minimum thresholds of supervised patient-based experience before initial credentialing, with continuous reassessment of competency to mitigate skill decay. Prospectively tracking procedural metrics, such as procedural volume and complication rates, also will support systematic skill assessment. Finally, similar to any other medical error, near misses and complications should trigger periprocedural safety reviews.
The modest body of research on hospitalists and procedures is the central limitation of our synthesis. Much of the literature consisted of consensus statements, retrospective studies, and small prospective educational studies. As a result, we did not adopt all strategies considered standard in a scoping or systematic review. The literature on MPS specifically was insufficient to draw conclusions about their operational and financial impact or effects on procedure quality. Our primary recommendation to implement MPS requires significant fiscal investment and infrastructure. It also entails risks that must be proactively addressed, including the potential for net financial loss and decreased educational opportunities for residents.
Hospitalists regularly face the predicament of being expected to independently perform procedures, with little access to training, minimal experience, and no ongoing assessment to ensure their proficiency or the safety of their patients. Past assumptions about hospitalists’ responsibility do not reflect realities in practice patterns and have not translated to widespread adoption of procedural training, monitoring, and assessment mechanisms. Our work summarizes a body of literature that, although limited in empiric studies of hospitalists themselves, offers insights with recommendations for hospital medicine groups wishing to uphold procedural skills as part of their providers’ professional identity.