Situation: A nurse works in a private lying-in clinic that offers prenatal care, normal births, postpartum care, and family planning services. The nurse assigned to a mother in the first hours after birth missed two of the ordered hourly blood pressure checks; all later readings were normal. After discharge, the mother developed a perineal wound infection that her physician found was unrelated to blood pressure monitoring. The family plans to sue the nurse for negligence. Which element would the family be unable to prove?

Negligence requires duty, breach, causation, and damage, all proven by the injured party. The assigned nurse had a duty and breached the standard of care by missing ordered checks, and the mother did suffer harm (the infection). But the harm did not result from the missed checks, so the breach was not the proximate cause of the injury and the claim fails on causation.

Legal framework of negligence in nursing

For a negligence claim to succeed, the injured party must prove four separate elements: duty, breach of duty, causation, and damage ^[2][4]. Each element is a distinct legal requirement, and failure to establish even one means the claim cannot proceed. In this scenario, the family would be able to prove three of the four elements but would fail on causation.

Why duty and breach are provable

Duty arises from the existence of a professional relationship between the patient and the healthcare provider ^[2]. The nurse was assigned to care for the mother in the first hours after birth, which clearly established a nurse–patient relationship. Once that relationship exists, the nurse owes the patient the legal obligation to act as a reasonable nurse would under the same or similar circumstances ^[4].

Breach of duty occurs when the nurse’s conduct falls below the applicable standard of care. The physician ordered hourly blood pressure checks, and the nurse missed two of them. A reasonable nurse in a postpartum setting would follow ordered monitoring schedules. Missing ordered assessments is a deviation from the expected standard, so breach is established ^[3].

Why damage is provable

Damage refers to actual harm or injury suffered by the patient ^[2][4]. The mother developed a perineal wound infection after discharge. An infection is a recognized form of harm that can support a negligence claim, so the damage element is satisfied. The fact that the harm exists is not in dispute.

Why causation fails

Causation requires a causal link between the claimant’s loss and the negligent behavior of the defendant ^[1]. This link has two components: factual causation and legal causation. Factual causation asks whether the harm would have occurred “but for” the breach. Legal causation asks whether the breach was a proximate or sufficiently direct cause of the harm ^[1].

In this scenario, the physician determined that the perineal wound infection was unrelated to blood pressure monitoring. The missed blood pressure checks did not cause the infection, nor did they contribute to its development. Even though the nurse breached the standard of care and the mother suffered harm, the breach was not the proximate cause of the injury ^[1]. The causal chain is broken because the type of harm that occurred has no connection to the type of duty that was breached.

Key point! Negligence requires all four elements to be proven together. A breach without a causal link to the harm is not actionable negligence.

Watch out! Do not confuse breach with causation. Missing vital sign checks is a breach, but if the patient’s injury arises from an entirely different mechanism, causation is absent and the claim fails.

Clinical and legal reasoning for the licensure exam

Element	Definition	Application to this case	Provable?
Duty	Professional relationship creating a legal obligation to act reasonably	Nurse assigned to postpartum mother	Yes
Breach of duty	Conduct falling below the standard of care	Missed two ordered hourly BP checks	Yes
Damage	Actual harm or injury	Perineal wound infection after discharge	Yes
Causation	Causal link between breach and harm	Infection unrelated to BP monitoring	No

The family would be unable to prove causation. The missed blood pressure checks were a breach, but they did not cause the perineal wound infection. Because the harm arose from a source independent of the negligent act, the legal requirement of a causal connection is not met, and the negligence claim cannot succeed on this element ^[1][2][4].