Background: The heart has its own built-in electrical system, called the conduction system. Our heart has its own internal electrical system that controls the rate and rhythm of our heartbeat. With each heartbeat, an electrical signal spreads from the top of the heart to the bottom. As the signal travels, it causes the heart to contract and pump blood.

Methodology: An evaluative approach with one group pretest posttest design was adopted for the study. The samples from the selected nursing institutions were selected using convenient sampling technique. The sample consisted of 50 nursing students. The tools used for data collection was structured knowledge questionnaire and planned teaching program was prepared for intervention.

Results: In pretest maximum 44(44%) respondents were having good knowledge, 40 (40%) respondents were having average knowledge and remaining 16 (16%) respondents were having poor knowledge. During posttest maximum 72 (72%) of respondents were having good knowledge and remaining 28 (28%) of respondents were having average knowledge regarding cardiac pacemaker. The statistical paired ‘t’ implies that the difference in the pretest and post-test value was found statistically significant at 5% level (p<0.05) with a paired ‘t’ value of 18.82. There exists a statistical significance in the difference of knowledge score indicating the positive impact of structured teaching programme.

Conclusion: Knowledge of nursing students regarding cardiac pacemaker during pretest was moderate and is increased as good after teaching program.