Neonatal thymectomy leads to (AIIMS May 2013)
|A||Depletion of lymph nodes|
|B||Depletion of para cortical areas of the lymph node|
|D||Increased production of lymphocytes by the bone narrow|
Bradycardia (Nelson 18 th Ch 99.5)
1. Among the choices given above the most common sign is Bradycardia
2. Hypoxia in the Newborn period is characterized by:
d. a slow heart rate,
e. and unresponsiveness to stimulation f. remain hypotonic or change from hypotonic to hypertonic,
3. Intrauterine growth restriction with increased vascular resistance may be the 1st indication of fetal hypoxia.
4. During labor: the fetal heart rate slows, and beat-to-beat variability declines. Continuous heart rate recording may reveal a variable or late (type II) deceleration pattern (see Fig. 96-4), and fetal scalp blood analysis may show a pH <7.20.
5. At delivery: the presence of yellow, meconium-stained amniotic fluid is evidence that fetal distress has occurred.
6. At birth: these infants are frequently depressed and fail to breathe spontaneously. During the ensuing hours, they may are also signs of hypoxic-ischemic encephalopathy.