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Table 4 PWS patients experiencing an oxygen desaturation.

From: Respiratory Depression in Young Prader Willi Syndrome Patients following Clonidine Provocation for Growth Hormone Secretion Testing

Patient (sex)

Age mos

Visit #

Receiving Growth Hormone

Clonidine dose, mg (g/kg)

Sleep onset (min)

Lowest SpO2(%)

BMI

BMI Z-score

Comments

1 (F) • 15q11-13 deletion• No history of sleep apnea

9

1

No

0.06 (7.1)

30

89%

17.3

0.37

Current upper respiratory infection

 

20

2

Yes

0.075 (6.1)

20

93%

16.3

0.51

Current upper respiratory infectionSonorous respirations

2 (F)• 15q11-13 deletion • No history of sleep apnea• History of snoring

17

2

Yes

0.05 (4.9)

30

91%

16.7

0.62

—

 

29

3

Yes

0.05 (4.0)

30

90%

NR

NR

—

3 (F) • 15q11-13 deletion• History of sleep apnea• History of snoring

27

2

No

0.025 (2.0) (dose reduced)

45

92%

15.8

0.15

Current upper respiratory infectionNo snoring

 

39

3

Yes

0.05 (2.6) (dose reduced)

37

93%

20.7

3.18

Current upper respiratory infectionMild airway obstruction

4 (F) • 15q11-13 deletion• History of respiratory pauses during sleep

28

2

No

0.07 (5.9)

33

92%

16.3

0.53

Irregular breathing with pauses

 

40

3

Yes

0.075 (6.4)

53

94%

14.2

−0.90

—

5 (F) • 15q11-13 deletion • Occasional snoring

48

4

Yes

0.125 (5.9)

31

94%

16.1

0.58

Sonorous respirations

  1. Characteristics of the 5 patients experiencing an oxygen desaturation on 9 separate occasions.
  2. BMI Z-scores were computed with the LMS method using WHO reference values for gender and age.
  3. NR—Not recorded.