Danger Signs in a Newborn

WHO/IMNCI guidelines define specific "danger signs" in a newborn that indicate the baby needs urgent medical attention. Recognizing normal physiological ranges versus abnormal, worrying values is key to answering this question.

Normal Newborn Vital Sign Parameters

• Temperature: Normal range is $36.5^\circ \text{C}$ to $37.5^\circ \text{C}$.
• Respiratory Rate: Normal range is 30 to $60/\text{min}$; a sustained rate above 60/min (tachypnea) is abnormal.
• Heart Rate: Normal resting range is 100 to $160/\text{min}$.
• Weight Change: A loss of up to 10% of birth weight in the first week is physiological and expected, with regain by 10–14 days.

Evaluating Each Option

• Option 1: Temperature between 36.0°C and 36.5°C.

  This is only marginally below the normal lower limit and reflects mild, borderline hypothermia risk rather than a defined danger sign; it does not meet the threshold criteria used to flag a newborn as unwell.

• Option 2: Heart rate of 120/min.

  This value lies comfortably within the normal newborn heart rate range of 100–160/min and is a completely normal finding, not a danger sign.

• Option 3: Respiratory rate more than 60/min. — Correct Answer

  A respiratory rate exceeding 60 breaths per minute (tachypnea) is one of the classic, universally recognized danger signs in a newborn. It signals possible respiratory distress, sepsis, pneumonia, or a cardiac problem and mandates immediate clinical evaluation. This is explicitly listed as a newborn danger sign in IMNCI/WHO newborn care protocols.

• Option 4: Weight loss of 8% within the first week of life.

  Physiological weight loss of up to 10% of birth weight in the first week is normal and expected due to fluid shifts, so an 8% loss falls well within the acceptable, non-alarming range.

Therefore, the correct answer is respiratory rate more than 60/min, as this is a genuine, guideline-recognized danger sign requiring urgent attention, whereas the other options describe values within normal physiological limits.