Table 1.
Pubmed.
| Search number | Query |
|---|---|
| #1 | “Ventricular Premature Complexes” [Mesh] |
| #2 | (Premature Ventricular Beats[Title/Abstract]) OR (Premature Ventricular Beat[Title/Abstract]) OR (Ventricular Beat, Premature[Title/Abstract]) OR (Ventricular Beats, Premature[Title/Abstract]) OR (Ventricular Premature Complex[Title/Abstract]) OR (Premature Ventricular Contractions[Title/Abstract]) OR (Premature Ventricular Contraction[Title/Abstract]) OR (Ventricular Contraction, Premature[Title/Abstract]) OR (Ventricular Contractions, Premature[Title/Abstract]) OR (Ventricular Ectopic Beats[Title/Abstract]) OR (Ectopic Beat, Ventricular[Title/Abstract]) OR (Ectopic Beats, Ventricular[Title/Abstract]) OR (Ventricular Ectopic Beat[Title/Abstract]) OR (Extrasystole, Ventricular[Title/Abstract]) OR (Ventricular Extrasystole[Title/Abstract]) OR (Ventricular Extrasystoles[Title/Abstract]) OR (Premature Ventricular Complex[Title/Abstract]) OR (Ventricular Complex, Premature[Title/Abstract]) |
| #3 | “wenxin keli” [Supplementary Concept] |
| #4 | “Metoprolol” [Mesh] |
| #5 | (Toprol[Title/Abstract]) OR (Betaloc[Title/Abstract]) OR (Betaloc-Astra[Title/Abstract]) OR (Betaloc Astra[Title/Abstract]) OR (Betalok[Title/Abstract]) OR(Metoprolol Tartrate[Title/Abstract]) OR (Seloken[Title/Abstract]) OR (Spesicor[Title/Abstract]) OR (Spesikor[Title/Abstract]) OR (Metoprolol Succinate[Title/Abstract]) OR (Metoprolol CR-XL[Title/Abstract]) OR (Metoprolol CR XL[Title/Abstract]) OR (Toprol-XL[Title/Abstract]) OR (Toprol XL[Title/Abstract]) OR (Beloc-Duriles[Title/Abstract]) OR (Beloc Duriles[Title/Abstract]) OR (Lopressor[Title/Abstract]) |
| #6 | #4 OR #5 |
| #7 | “Randomized Controlled Trials as Topic” [Mesh] |
| #8 | (Clinical Trials, Randomized[Title/Abstract]) OR (Trials, Randomized Clinical[Title/Abstract]) OR (Controlled Clinical Trials, Randomized[Title/Abstract]) |
| #9 | #7 OR #8 |
| #10 | #1 OR #2 |
| #11 | #10 AND #3 AND #6 AND #9 |
Retrieval strategy (all studies are searched based on the principles of PICOs).