[A study on safety of opening pulp chamber therapy for patients with a history of remote myocardial infarction].

OBJECTIVE

To study the indication and contraindication of opening pulp chamber therapy for patients with a history of remote myocardial infarction.

METHODS

Blood pressure (BP), heart beat rate and electrocardiographic examination were determined during opening pulp chamber therapy in patients with acute and chronic pulpititis and a history of remote myocardial infarction.

RESULTS

High blood pressure and quick heart beat were found during local anaesthetic injection and opening of pulp chamber (during local anaesthetic injection BP increased by 12.52/8.04 mmHg, heart rate by 4.02 times/min;during opening of pulp chamber BP and heart rate increased by 15.43/8.0 mmHg, 6.37 times/min respectively). Electrocardiogram showed myocardial ischemic pattern deteriorated in some patients with the history of coronary insufficiency.

CONCLUSIONS

Most patients can bear it. Comprehensive physical examinations, evaluations of the patients' cardial status, mental state and indispensible equipment are necessary. The therapy is recommended to be operated under the monitor electrocardiography for the safety of the patients.