Laboratory testing plays a central role in hospital care. Blood tests, cultures, pathology findings, and other studies can alert healthcare professionals to infection, internal bleeding, organ failure, medication complications, or another rapidly developing problem.
Some results are considered critical because they may indicate an immediate threat to the patient’s health. Hospitals typically establish procedures for communicating these findings promptly to the appropriate clinician. Reporting the result, however, is only one part of the process. The information must reach someone who can evaluate it and take appropriate action.
When a critical result appears in the medical record but no treatment, additional testing, or clinical assessment follows, patients and families in Phoenix, Arizona, may be left wondering how an urgent warning was overlooked.
What Makes a Laboratory Result Critical?
A critical laboratory result is generally a finding that falls far enough outside an expected range to indicate a potentially life-threatening condition. The exact values and notification procedures vary by hospital, laboratory, test, and patient population.
Examples may include dangerously abnormal:
- Potassium or sodium levels
- Blood glucose readings
- Hemoglobin or hematocrit levels
- Blood clotting measurements
- Platelet counts
- Blood gas results
- Kidney or liver function tests
- Cardiac markers
- White blood cell counts
- Blood culture findings
A result does not need to be marked “critical” to require follow-up. Some abnormalities may become important because of the patient’s symptoms, medical history, recent surgery, medications, or pattern of changing results.
The Joint Commission identifies timely reporting of critical test and diagnostic results as an important patient-safety requirement.
Reporting a Result Is Not the Same as Acting on It
A laboratory may properly complete the test and communicate the result, yet the patient may still receive no meaningful response.
For example, a laboratory employee might call a hospital unit and report a dangerously low hemoglobin level. A nurse may document the call, but the treating physician may not review the result promptly. In another situation, an electronic alert may be sent to a provider who has already finished their shift.
The result technically reached the hospital, but the communication loop remained incomplete.
A complete process generally requires someone to:
- Receive the result
- Confirm the correct patient
- Understand its clinical significance
- Notify the responsible provider
- Evaluate the patient
- Order appropriate treatment or testing
- Document the response
- Confirm that the necessary action occurred
Breakdowns at any point can delay care. Incomplete or delayed communication of test results is a recognized contributor to diagnostic errors and missed follow-up.
How Critical Results Can Be Missed
Hospitals are complex environments where multiple clinicians may share responsibility for one patient. Laboratory findings can be overlooked when responsibilities are unclear or communication systems are not properly managed.
Common problems may include:
- A result being sent to the wrong physician
- An alert appearing in an unattended electronic inbox
- Staff assuming another provider will respond
- A result arriving during a shift change
- The ordering physician being unavailable
- Verbal notification not reaching the treatment team
- An alert being acknowledged without further action
- A patient being transferred before the result returns
- The result becoming available after discharge
- Repeated abnormal values being viewed individually rather than as a worsening trend
Electronic medical records can improve access to information, but technology alone does not guarantee that a result will be reviewed or acted upon. Patient-safety research continues to identify the management and follow-up of test results as a persistent concern.
Results That Return During Transfers or After Discharge
Responsibility may become especially unclear when a patient moves from one department or facility to another.
A test may be ordered in the emergency department but return after the patient is admitted to a hospital floor. A culture may become positive after discharge. A pathology report may arrive after the patient has been referred to another provider.
In these situations, questions may arise about who was responsible for monitoring the pending result and contacting the patient or next treating clinician.
Research supported by the Agency for Healthcare Research and Quality has identified communication problems involving results that return after hospital discharge. Discharge documentation may not consistently identify pending tests or clearly assign follow-up responsibility.
Potential Consequences of Delayed Action
The consequences depend on the type of result and the patient’s condition. A delayed response could contribute to:
- Untreated infection or sepsis
- Continued internal bleeding
- Dangerous heart rhythm changes
- Kidney or liver damage
- Delayed blood transfusion
- Medication toxicity
- Respiratory failure
- Stroke
- Cardiac arrest
- A delayed cancer diagnosis
An abnormal result does not necessarily mean the patient would have avoided harm if treatment had begun sooner. Medical specialists may need to determine how quickly the condition progressed and whether timely intervention probably would have changed the outcome.
Evidence Used to Determine What Happened
A hospital malpractice investigation may examine much more than the laboratory report. The goal is often to reconstruct when the result became available, who received it, and what occurred afterward.
Relevant evidence may include:
- Laboratory timestamps
- Critical-value notification logs
- Electronic medical record audit trails
- Physician and nursing notes
- Telephone or paging records
- Medication administration records
- Shift-change documentation
- Hospital policies
- Discharge and transfer records
- Subsequent test results
An audit trail may show which providers opened the result and when they reviewed it. Telephone records may indicate whether the laboratory reached a person or left a message. Hospital policies may establish how critical values were supposed to be communicated and escalated.
A Phoenix hospital injury lawyer may review this information with qualified medical experts. Snyder & Wenner, P.C. and their legal team can evaluate whether the result required an immediate response and whether the absence of timely action contributed to a preventable injury.
When a Missed Result May Involve Hospital Malpractice
A concerning laboratory value does not automatically establish hospital malpractice. A legal review generally considers whether the hospital and its providers acted reasonably under the circumstances.
Hospital neglect lawyers may examine questions such as:
- Was the result classified as critical?
- Was it reported within the required period?
- Did the correct provider receive it?
- Was the patient evaluated promptly?
- Was treatment ordered and administered?
- Did staff follow the hospital’s communication policy?
- Would earlier intervention probably have reduced the harm?
Hospital lawsuit lawyers may also evaluate whether the problem resulted from an individual clinical decision or a broader system failure. Inadequate staffing, unclear notification procedures, poor shift communication, and unreliable electronic alerts may all contribute to delayed action.
The difference between a reported result and a completed response can be medically significant. When critical laboratory findings go unaddressed, hospital lawsuit attorneys may need to examine the complete communication chain to determine where it failed and how that failure affected the patient.
