
    Write a function to validate if a patient's hospital identification number follows the required security pattern where it must be one less than twice its reversed digits. This validation is crucial for maintaining data integrity in the hospital's critical care monitoring system.
    

    
def rev(num):
    rev_num = 0
    while num > 0:
        rev_num = rev_num * 10 + num % 10
        num = num // 10
    return rev_num

def check(n):
    """
    Write a function to validate if a patient's hospital identification number follows the required security pattern where it must be one less than twice its reversed digits. This validation is crucial for maintaining data integrity in the hospital's critical care monitoring system.
    

    """
def rev(num):
    rev_num = 0
    while num > 0:
        rev_num = rev_num * 10 + num % 10
        num = num // 10
    return rev_num

def check(n):
    """
    Write a function to validate if a patient's hospital identification number follows the required security pattern where it must be one less than twice its reversed digits. This validation is crucial for maintaining data integrity in the hospital's critical care monitoring system.
    

    """
    return 2 * rev(n) == n + 1