The Heart Issue

My son Sal recently had a medical issue that revealed other information from a hospital stay of 6 years ago.
At that time he was 21 years almost 22 still living at home with me. He didn't want me to worry so he kept much from me about his hospital stay but I knew it was a serious matter. He was inpatient for four days and then went home to rest for two weeks before he returned back to work. My son had been diagnosed with a heart condition Cardiomegaly, his father's side of the family are major candidates of this heart condition that can lead to heart disease.
In his case he had an infection surrounding his heart, his symptoms were all of a heart attack when He arrived at the ER.
He recently told me something that made me thank God with many tears, he said while he was there his Nurse was briefing the oncoming shift Nurse about his condition, without them being aware that he wasn't asleep the oncoming Nurse stated, "with all the symptoms and his lab results this young man should've had a heart attack, I can't believe he is here".
When he told me this I told him Papas that was ALL GOD,  that's a benefit of living for God. He keeps his hand on our lives and health that amazes strangers, he defies the medical experts. Doctors and nurses kept asking him constantly c'mon tell us what recreational drugs do you use, he kept telling them constantly none, I don't do drugs. Drugs are the major cause why young men/women are diagnosed with this condition.
Family members on his father side with this condition died at the young age of 19 and 27...their hearts exploded.
Cardiomegaly basically is an enlarged heart, many things can enlarge it as stress, diet, excessive alcohol and drug use and even pregnancy. In my son's case its prevalent in his father's family.
I've gone before God before and after this incident thanking Him for sparing my son from a heart attack but I've also reminded Him that He has been washed in His blood,  that He forever remove that sickness from his body. His Word says we are healed by his stripes and I believe it. I don't want it in my children or grandchildren it can't cross over that precious blood.I