IJCS | Volume 32, Nº6, November / December 2019

618 Table 2 - Values obtained from 186 ABPM in group 2 (patients taking antihypertensive medications) – Pearson’s Correlation Coefficient Pearson's Correlation Coefficient Maximum temperature Minimum temperature Mean temperature Relative air humidity MASBP -.081 -.072 -.078 .069 MADBP -.043 .022 .001 -.037 MRSBP .063 .073 .078 -.123 MRDBP .065 .117 .111 -.105 MAX SBP -.038 -.062 -.053 -.042 MIN SBP -.027 -.004 -.012 -.058 24HMSBP -.024 -.011 -.014 -.093 24HMDBP .000 .072 -.051 -.054 Systolic dipping -.193 -.192 -.209 .113 Diastolic dipping -.175 -.165 -.186 .127 ABPM: ambulatory blood pressure monitoring; MASBP/MADBP: mean awake systolic and diastolic blood pressure; MRSBP/MRDBP: mean resting systolic and diastolic blood pressure; MAX SBP/MIN SBP: maximum and minimum systolic blood pressure; 24HMSBP/24HMDBP: 24H mean systolic and diastolic blood pressure. Table 3 - Values obtained from 716 ABPM in group 3 (patients without antihypertensive medication) - Pearson’s Correlation Coefficient Pearson's Correlation Coefficient Maximum temperature Minimum temperature Mean Temperature Relative air humidity MASBP -.158 -.188 -.191 .001 MADBP -.113 -.134 -.137 .029 MRSBP -.033 -.030 -.041 -.028 MRDBP -.042 -.042 -.050 .035 MAX SBP -.154 -.187 -.189 .008 MIN SBP -.127 -.121 -.140 -.008 24HMSBP -.145 -.155 -.168 .017 24HMDBP -.089 -.103 -.107 .019 Systolic dipping -.138 -.172 -.162 -.028 Diastolic dipping -.083 -.100 -.097 .001 ABPM: ambulatory blood pressure monitoring; MASBP/MADBP: mean awake systolic and diastolic blood pressure; MRSBP/MRDBP: mean resting systolic and diastolic blood pressure; MAX SBP/MIN SBP: maximum and minimum systolic blood pressure; 24HMSBP/24HMDBP: 24H mean systolic and diastolic blood pressure. Escosteguy et al. Temperature variation in blood pressure Int J Cardiovasc Sci. 2019;32(6):615-622 Original Article Regarding the pathophysiology, Amoah et al 5 states that an increase in sympathetic tonus during winter increases BP levels, whereas vasodilation and loss of salt and water through summer perspiration causes BP levels to decrease. In 2013, in a study carried out in China, the authors 18 concluded that blood