PROGNOSTIC VALIDITY OF SIX MINUTE WALK TEST (SMWT) & RESULTANT DYSPNOEA RATING IN PATIENTS WITH PRIMARY PULMONARY HYPERTENSION
| Main Author: | Rashid Ahmed Khan*, Nasrullah Aamir, Muhammad Iqbal, Hamid Nawaz Ali Memon, Aatir H. Rajput and Muhammad Muneeb |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2018
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/1146814 |
Daftar Isi:
- Objective: This study hopes to assess the prognostic validity of desaturation during a SMWT using repeated evaluation against the Baseline Dyspnea Index - dyspnea rating in patients of primary pulmonary hypertension. Methodology:This retrospective analysis comprised of the SMWT and dyspnea rating records of a total of 377 pre-diagnosed patients of primary pulmonary hypertension, re-approached after their initial presentation at a pulmonology specialist setting after a minimum of 1 year of initial recorded results of SMWT and Baseline Dyspnea Index and evaluated again against the Baseline Dyspnea Index and a 3 day – Mean Blood Pressure. The data obtained was analyzed using SPSS v. 21. 0 and the results used to draw a conclusion. Results: Among the 37 subjects, 23 were males while 14 were females. Mean age of the subjects was 43 years. The mean distance result of the SMWT was 347 m with the highest and lowest values measuring at 329 and 378 respectively. Upon re-approaching and evaluation against the Baseline Dyspnea Index and a 3 day – Mean Blood Pressure, the patients with yielded interesting results. Patients with an SMWD of more than 347, reported a subsequent mean Baseline Dyspnea Index of Grade 3 or more, while patients with a SMWD of less than 347 reported a subsequent mean Baseline Dyspnea Index of Grade 2 or less. In addition, patients with an SMWD of more than 347, reported a subsequent 3 day – Mean Blood Pressure of less than 130/90 mmHg, while patients with a SMWD of less than 347 reported a subsequent mean 3 day – Mean Blood Pressure of more than 130/90 mmHg. Conclusion: After careful consideration, it can safely be concluded that a mean SMWD of 337 or less is prognostic of better eventual 1 year outcome. While a SMWD of more than 337 is prognostic of worse eventual 1 year outcome evaluated against the Baseline Dyspnea Index – Dyspnea rating. Keywords: Primary Pulmonary Hypertension, Hypertension. SMWT, SMWD, Dyspnea, Blood Pressure, Prognostic Value