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Difficulty: MediumNeonatal Disorders

During the examination of newborns in the postnatal ward, a pediatrician encounters various complications related to operative and complicated deliveries. Match each clinical scenario with the most appropriate diagnosis.

  • Following a vacuum-assisted extraction, an infant exhibits a rapidly enlarging, fluctuant head mass that extends towards the neck margins, accompanied by tachycardia and pallor.Subgaleal hemorrhage
  • Hours after a spontaneous vaginal delivery, a well-demarcated, firm swelling appears strictly over the right parietal bone, not extending past the sagittal suture.Cephalohematoma
  • A macrosomic infant born after shoulder dystocia presents with the right arm adducted, internally rotated, and pronated, but has an intact palmar grasp reflex.Erb-Duchenne palsy
  • An infant born via breech extraction displays an absent palmar grasp reflex in the right hand, along with ipsilateral ptosis and miosis.Klumpke palsy

Answer

The clinical scenarios correctly match with subgaleal hemorrhage (rapidly expanding mass with shock), cephalohematoma (suture-limited parietal swelling), Erb-Duchenne palsy (C5-C6 injury with waiter's tip posture and intact grasp), and Klumpke palsy (C8-T1 injury with absent grasp and Horner syndrome).
Neonatal birth trauma frequently involves scalp fluid collections and brachial plexus injuries. Identifying the exact physical examination findings allows for accurate diagnosis. Subgaleal hemorrhage involves life-threatening bleeding crossing suture lines. Cephalohematoma is subperiosteal and strictly localized. Erb-Duchenne palsy affects C5-C6 roots causing a waiter's tip deformity with intact grasp, whereas Klumpke palsy affects C8-T1, resulting in an absent grasp reflex and possible Horner syndrome.

Step-by-Step Solution

1
Analyze the scalp swelling presentations to differentiate the anatomical layer of bleeding based on crossing of suture lines and hemodynamic stability.
The rapidly expanding, shock-inducing mass crossing suture lines is identified as subgaleal hemorrhage, while the firm, restricted swelling is identified as cephalohematoma.
Different anatomical layers of the scalp dictate the clinical progression and risk of hypovolemia in neonatal head trauma.
2
Evaluate the brachial plexus injury presentations by noting specific motor deficits and the presence or absence of autonomic dysfunction.
The presentation with upper nerve root signs and intact grasp is identified as Erb-Duchenne palsy, whereas the presentation with lower nerve root signs, absent grasp, and Horner syndrome is identified as Klumpke palsy.
The location of traction on the brachial plexus (upper vs. lower roots) causes predictable and distinct neurological deficits.

Key Concept

Differentiating neonatal birth injuries by anatomic boundaries and specific neurological deficits
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Topics

Neonatal Disorders

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