many miami hospitals shut hurricane irma bear florida offer shelter pregnant patients brace increase birth often accompany large storm least three city hospitals plan place care women advance high-risk pregnancies could busy houston hit hurricane harvey number women give birth spike accord memorial hermann health system representative least five not-for-profit system 11 houston-area hospitals labor delivery units report increase number deliveries hurricane harvey three deliveries double reason may something drop barometric pressure accompany hurricane 2007 study publish archive gynecology obstetrics note causal relationship low barometric pressure spontaneous delivery overall evidence inconclusive say dr. shannon clark associate professor division maternal fetal medicine university texas medical branch galveston gulf mexico study show association t. kind mix clark say telephone interview even say still worth forewarn pregnant women areas go get hit could potential complication miami jackson health system alert women least 34 weeks pregnant high-risk pregnancy may take shelter one three hospitals long register hospital advance women allow bring one guest pet tania leets spokeswoman public health system serve miami-dade county say offer service last year hurricane matthew baptist health south florida offer shelter women miami least 36 weeks pregnant high-risk pregnancy one four area hospitals pregnant woman one adult companion set camp wait room area come must bring food water bed shelter open a.m. saturday close storm pass baptist health south say statement mount sinai medical center miami beach likewise shelter women least 36 weeks pregnant high-risk pregnancies accord statement website memorial hermann great heights hospital houston deliveries start soar two days hurricane harvey arrive require five managers help patient care know business full moon storm problem say kim kendall director hospital family birth center staff make effort close shade redirect conversation focus delivery try maximize experience minimize hurricane say kendall miami hospitals prepare surge birth hurricane irma