NR 720 Week 7 Systems Diagnosis Paper Example

Systems Diagnosis: Why a New Central Line Waits Two Hours for First Use in the Medical Intensive Care Unit When Every Department Meets Its Own Target

Student Name

College of Nursing, Chamberlain University

NR 720: Topics in Healthcare Systems Leadership I

Instructor Name

Month Day, Year

Systems Diagnosis: Why a New Central Line Waits Two Hours for First Use in the Medical Intensive Care Unit When Every Department Meets Its Own Target

The Behavior to Be Explained

In the medical intensive care unit, a newly placed central line waits a median of 122 minutes before anything is infused through it, across 64 placements from January to March 2027. For about two thirds of these patients, the line was placed to start or move a vasopressor, which runs through a peripheral vein in the meantime. Yet radiology meets its two-hour target for routine inpatient reads, the technologists take films promptly, and the intensive care clinicians write clearance notes soon after reads appear. The puzzle is how a process made of on-time parts produces a two-hour delay.

The Explanation, Stated Early

The delay is produced by the space between two departments' targets. Radiology's target measures the time from image to report for routine studies, and line films are routine by default, so radiology meets its target while line films wait behind every urgent study. The intensive care unit has no target for the interval after the report, and no role owns the act of clearing the line and telling the nurse, so that interval belongs to no one's measure. Time accumulates in the two places that neither department counts. Nobody is failing; the work lying between the two targets simply has no owner. This is a mechanical explanation, not a moral one: it predicts the delay from how work, defaults and measures are arranged, without assuming that anyone is careless (Carayon et al., 2006).

The Evidence, Organized by the Argument

Three findings support the first half of the mechanism, the default priority. The bottleneck analysis found that reading a line film takes roughly two minutes, against a median wait of 64 minutes before anyone opens it, so work is about 3% of the reading interval. When a film was ordered urgent, as 11 of the 64 were, the same radiologists reported it in a median 13 minutes. And routine line films taken overnight, when the queue is short, were read faster than daytime ones despite one radiologist covering the hospital. Each finding fits a queue sorted by priority and does not fit a shortage of reading capacity.

Two findings support the second half, the unowned clearance. The process map, built from interviews and checked by observation, found no procedure that assigns anyone to tell the nurse, and four of four nurses said they watch the results tab and ask. Observation of 22 placements found nurses checking the results a median of five times per placement and a median of 11 minutes between the clearance note and the nurse knowing of it.

One finding supports the whole mechanism at once. In the surgical intensive care unit, which shares the same radiologists, queue, machines and record, a written protocol lets the placing clinician clear the line on a personal reading. There the median from line to first use was 43 minutes. The reading queue is identical; the surgical unit simply does not wait for it, and its clinicians tell the nurse when they clear.

The Strongest Rival

The strongest rival explanation is understaffing in radiology. The department has a vacancy, the daytime queue is long, and staff in the intensive care unit say radiology is slow. If this were the main cause, urgent line films would also wait, nights with one radiologist would be slower than days with three, and the surgical unit, which uses the same radiologists, would see the same delay. None of these holds. Understaffing is real for radiology's whole workload and deserves its own attention, but it does not explain why line films in one unit wait two hours.

A second rival is clinician competence: perhaps medical unit clinicians wait for radiology because they cannot read line films reliably. Conversations with clinicians suggest otherwise. Several had cleared lines on their own readings while training in the surgical unit, and they described waiting as a matter of permission, not skill. A third rival, that nurses are passive, mistakes a missing assignment for a missing effort; the nurses checked repeatedly.

Why the Arrangement Persists

The mechanism also explains why the delay has lasted. Each department reviews its own performance monthly, and each review is green: radiology reports routine inpatient reads within target, and the intensive care unit reports no line-related complications. No report anywhere shows the interval from line to first use, so the only people who see it whole are the bedside nurses, who experience it as waiting and report it, when they report it at all, as radiology being slow. Complaints therefore travel to the department least able to fix the problem alone and are answered, correctly, with that department's on-target figures. A system arranged this way will reproduce the delay indefinitely, month after month, with no one ever having chosen it.

What the Diagnosis Does Not Claim

No harm is claimed. None of the 64 placements had a documented peripheral extravasation, and the analysis cannot show what the waiting cost patients. It does not claim that copying the surgical protocol is safe without credentialing; among the surgical unit's 33 self-cleared lines, one was later judged malpositioned by the radiologist. And it does not claim the mechanism explains night and weekend practice as fully as daytime practice, where most of the observation took place.

The Case for Acting

The diagnosis supports acting on the two arrangements it identifies rather than on any department's effort. Giving line films their own priority in the order set would move a few studies a day to the front of the reading queue at a cost of about two minutes each. A rule assigning the credentialed placing clinician to clear the line and tell the nurse would give the unowned interval an owner. Bedside ultrasound, which has been shown to detect malposition and pneumothorax faster than radiography (Ablordeppey et al., 2017), could support that rule. The measurement plan already written would test whether the changes work, with radiology's own reading times as a balancing measure. Whether to act is a decision for the two departments' leaders; this paper's purpose is to show that the delay is a product of the system's design and so can be changed by changing the design (Goldratt & Cox, 2004).

References

Ablordeppey, E. A., Drewry, A. M., Beyer, A. B., Theodoro, D. L., Fowler, S. A., Fuller, B. M., & Carpenter, C. R. (2017). Diagnostic accuracy of central venous catheter confirmation by bedside ultrasound versus chest radiography in critically ill patients: A systematic review and meta-analysis. Critical Care Medicine, 45(4), 715-724. https://doi.org/10.1097/CCM.0000000000002188

Carayon, P., Schoofs Hundt, A., Karsh, B. T., Gurses, A. P., Alvarado, C. J., Smith, M., & Flatley Brennan, P. (2006). Work system design for patient safety: The SEIPS model. Quality and Safety in Health Care, 15(Suppl. 1), i50-i58. https://doi.org/10.1136/qshc.2005.015842

Goldratt, E. M., & Cox, J. (2004). The goal: A process of ongoing improvement (3rd rev. ed.). North River Press.