Table 26.13
Causes of T-LOC: secular trend
Diagnosis 1980s* 2000s** 2006***

Reflex and orthostatic

37%

56%

76%

Cardiac arrhythmias

13%

11%

11%

Structural cardiopulmonary

4%

3%

5%

Non-syncopal T-LOC

10%

9%

6%

Unexplained

36%

20%

2%

Diagnosis 1980s* 2000s** 2006***

Reflex and orthostatic

37%

56%

76%

Cardiac arrhythmias

13%

11%

11%

Structural cardiopulmonary

4%

3%

5%

Non-syncopal T-LOC

10%

9%

6%

Unexplained

36%

20%

2%

*

Data pooled from six population-based studies (1499 patients).

**

Data pooled from four population-based studies (1640 patients).

***

Data from EGSYS 2 study (465 patients).

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