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\begin{tikzpicture}[node distance=2.5cm]
\tikzstyle{process} = [rectangle, minimum width=1.5cm, minimum height=0.8cm, text centered, draw=black]
\tikzstyle{resource} = [rectangle, minimum height=0.8cm, text centered]
\tikzstyle{arrow} = [thick,->,>=stealth]
\node (start)[process] {ward};
\node (stage1)[process, right of=start, xshift= 0.5cm]{PHU};
\node (stage2)[process, right of=stage1]{OR};
\node (stage3)[process, right of=stage2, xshift=0.5cm]{PACU};
\node (stage4)[process, right of=stage3]{ICU};
\node (nurse)[resource, below of=stage1, yshift=0.6cm, xshift= 1.25cm]{nurses (circulating/scrub/anesthetist)};
\node (surgeon)[resource, above of=stage2, yshift= -1cm, text width=5cm]{surgeons/anesthesiologist/ tools and equipment};
\node (bed)[resource, below of=stage3, yshift= 1.2cm]{recovery bed};
\node (discharge)[resource, below of=start, yshift= 1.2cm]{patient discharge};
\node (arrival)[resource, left of=start, text width=1.3cm]{patient arrival};
\draw [arrow] (arrival)--(start);
\draw [arrow] (start)--(stage1);
\draw [arrow] (start)--(discharge);
\draw [arrow] (nurse)--(stage1);
\draw [arrow] (stage1)--(stage2);
\draw [arrow] (nurse)--(stage2);
\draw [arrow] (surgeon)--(stage2);
\draw [arrow] (stage2)--(stage3);
\draw [arrow] (bed)--(stage3);
\draw [arrow, densely dashed] (stage3)--(stage4);
\draw [arrow] (nurse)-|(stage4);
\draw [arrow] (stage3) -- +(0,2.2) -| (start);
\draw [arrow, densely dashed] (stage4) -- +(0,2.2) -- +(-2.5,2.2);
\end{tikzpicture}

this is my code for this pici but I need the pic like this picenter image description here

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  • 1
    Welcome to TeX.SE. Thanks for providing a MWE for your first question. For future reference, please include the \documentclass and the appropriate packages so that those trying to help don't have to figure them out. This is especially important for tikz as there are numerous libraries, even though in this case other libraries were not needed. Feb 4 '20 at 8:55
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You can use the |- to determine the correct points

image

Notes:

Code:

\documentclass[10pt]{article}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}[node distance=2.5cm]
\tikzset{process/.style={rectangle, minimum width=1.5cm, minimum height=0.8cm, text centered, draw=black}}
\tikzset{resource/.style={rectangle, minimum height=0.8cm, text centered}}
\tikzset{arrow/.style={thick,->,>=stealth}}
\node (start)[process] {ward};
\node (stage1)[process, right of=start, xshift= 0.5cm]{PHU};
\node (stage2)[process, right of=stage1]{OR};
\node (stage3)[process, right of=stage2, xshift=0.5cm]{PACU};
\node (stage4)[process, right of=stage3]{ICU};
\node (nurse)[resource, below of=stage1, yshift=0.6cm, xshift= 1.25cm]{nurses (circulating/scrub/anesthetist)};
\node (surgeon)[resource, above of=stage2, yshift= -1cm, text width=5cm]{surgeons/anesthesiologist/ tools and equipment};
\node (bed)[resource, below of=stage3, yshift= 1.2cm]{recovery bed};
\node (discharge)[resource, below of=start, yshift= 1.2cm]{patient discharge};
\node (arrival)[resource, left of=start, text width=1.3cm]{patient arrival};
\draw [arrow] (arrival)--(start);
\draw [arrow] (start)--(stage1);
\draw [arrow] (start)--(discharge);
\draw [arrow, <-, red] (stage1) -- (stage1 |- nurse.north);
\draw [arrow] (stage1)--(stage2);
\draw [arrow, <-,  blue] (stage2) -- (stage2 |- nurse.north);
\draw [arrow] (surgeon)--(stage2);
\draw [arrow] (stage2)--(stage3);
\draw [arrow] (bed)--(stage3);
\draw [arrow, densely dashed] (stage3)--(stage4);
\draw [arrow] (nurse)-|(stage4);
\draw [arrow] (stage3) -- +(0,2.2) -| (start);
\draw [arrow, densely dashed] (stage4) -- +(0,2.2) -- +(-2.5,2.2);
\end{tikzpicture}
\end{document}
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