17 Oct

Gas Exchange in Chronic Thromboembolism after Pulmonary Thromboendarterectomy: Results (Part 1)

Gas Exchange in Chronic Thromboembolism after Pulmonary Thromboendarterectomy: Results (Part 1)The patient population was composed of six men and three women. The average age was 47 ± 9 years at the time of surgery. Patients returned eight to 18 months (average 12 months) after surgery for follow-up evaluation. buy ampicillin
Prior to surgery, all had symptoms of dyspnea on exertion for over one year (average 3.9 years), and all were NYHA class 3 or 4. None of the subjects was a current cigarette smoker, although three subjects had smoked in the past (16, 20, and 75 pack-years). Preoperative pulmonary function studies are shown in Table 1. These data represent the same measurements previously reported, but they have been recomputed to be in accord with ATS recommendations. They revealed minimal abnormalities: five subjects had normal spirometry and lung volumes (patients 1, 2, 4, 6, and 9); two subjects had mild restriction (5 and 8); one subject had minimal obstruction (patient 3); and one subject had combined restriction and obstruction (patient 7). Thromboendarterectomy did not significantly affect lung volumes or expiratory flows (p>0.05).

Table 1—Pulmonary Function Data

Patient

Age, yr

TLC

FRC

RV

FVC

FEV,

FEV,%

Deo

Dl/Va

i

Pre

43

92

95

106

80

72

74

53

64

Post

89

89

84

83

77

76

59

74

2

Pre

55

95

109

120

72

67

72

NA

NA

Post

100

97

90

86

87

78

NA

NA

3

Pre

53

112

118

133

93

80

68

81

77

Post

116

119

144

92

82

71

81

81

4

Pre

OQ

99

85

81

92

92

82

57

58

Post

95

88

68

98

96

81

74

77

5

Pre

48

63

73

82

43

49

93

NA

NA

Post

71

82

99

54

65

99

NA

NA

6

Pre

60

97

104

98

93

93

79

69

80

Post

96

105

98

90

92

80

61

69

7

Pre

53

70

73

89

53

44

66

51

80

Post

76

81

74

67

56

66

58

75

8

Pre

36

74

63

58

78

85

86

68

96

Post

75

56

77

73

79

86

63

87

9

Pre

32

84

67

83

80

76

83

65

85

Post

95

80

99

87

83

83

67

86

Preop:

mn

47

87

87

94

76

73

78

63

77

sd

9

16

20

23

18

17

9

11

13

Postop:

mn

90

89

92

81

80

80

66

78

sd

14

18

22

14

13

9

9

7

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