An online method for diagnosis of difficult TB cases for developing countries

Area of Science:

• Public Health
• Medical Informatics
• Infectious Diseases

Background:

• Limited resources and logistical challenges hinder tuberculosis (TB) control in developing countries.
• Face-to-face (f-2-f) TB Diagnostic Committee (TBDC) consultations are difficult to arrange due to physician shortages and travel issues.

Purpose of the Study:

• To evaluate the effectiveness of e-Health for virtual TBDCs in improving TB diagnosis and resource allocation.
• To compare diagnostic accuracy and turnaround times of electronic TBDCs (e-TBDCs) versus traditional f-2-f consultations.

Main Methods:

• A study in Pakistan compared radiological diagnoses of suspected TB patients using e-TBDCs versus primary physicians.
• Diagnostic accuracy was assessed against TB culture and 2-month clinical follow-up as gold standards.
• Turnaround times (TAT) for diagnosis were recorded, comparing urban and rural sites.

Main Results:

• e-TBDC decisions showed slightly higher accuracy (sensitivity 32.4%) than f-2-f (27.6%) when using TB culture as the gold standard.
• Average TAT for e-TBDC diagnosis was 34.6 hours, with rural sites having longer delays (59.15 hours) than urban sites (15.9 hours).
• In the Philippines, the "iPath" system demonstrated the potential of e-TBDCs for remote case review and diagnosis.

Conclusions:

• e-Health virtual TBDCs offer a viable solution to optimize resource use and reduce diagnostic delays in TB control.
• While slight differences in accuracy exist, e-TBDCs show promise in improving efficiency and accessibility of TB diagnostics.
• Further implementation of e-Health platforms can enhance TB diagnostic capabilities in resource-limited settings.